plastic pollution – Artifex.News https://artifexnews.net Stay Connected. Stay Informed. Mon, 09 Sep 2024 12:57:06 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.2 https://artifexnews.net/wp-content/uploads/2023/08/cropped-Artifex-Round-32x32.png plastic pollution – Artifex.News https://artifexnews.net 32 32 India is the world’s largest plastic polluter according to new study  https://artifexnews.net/article68621895-ece/ Mon, 09 Sep 2024 12:57:06 +0000 https://artifexnews.net/article68621895-ece/ Read More “India is the world’s largest plastic polluter according to new study ” »

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New research published in the journal Nature has said that India is responsible for around one-fifth of global plastic emissions of around 9.3 million metric tonnes (Mt) per year.

The rate places India at the top of the emitters’ list, whereas the study places China, generally considered to be the greatest committer, fourth.

Plastic emissions includes materials that have moved from controlled systems for waste, however basic, managed or mismanaged, to the environment where they are under no control.

According to the study, conducted by researchers at the University of Leeds, plastic emissions are highest in southern Asian, sub-Saharan African, and southeast Asian countries.

It estimated Nigeria produces 3.5 Mt of plastics per year, ahead of Indonesia with 3.4 Mt/year and China with 2.8 Mt/year.

“Previous studies highlighted China as a high plastic polluter because they used much older data on the country’s waste management” researcher and study co-author Ed Cook told The Hindu. “However, in the last 15 years, China has improved its waste management substantially and is approaching a point where it has a comprehensive collection system. Remember that China is fast approaching high-income group status and more monetary resources than India.”

India’s plastic problem

India has emerged as one of the world’s largest plastic polluters for several reasons, according to Cook. “Firstly, there is a large and increasing population which is becoming more affluent. That means more and more waste, and the country has struggled to keep pace with providing waste management services. In a way this is a typical situation seen in other countries, but it is more pronounced in India because of the large number of people.”

Dumping sites in the country are home to uncontrolled land disposal and outnumber sanitary landfills 10 to 1. The country’s official waste generation rate, estimated to be 0.12 kg per capita per day, is possibly underestimated while waste collection is overestimated, the study noted.

While India claims to have a national waste collection coverage of around 95%, the study found evidence that official statistics don’t include rural areas, open burning of uncollected waste, and waste recycled by the informal sector.

Data used in the study indicates collection average of 81% for India.

Around 5.8 Mt of plastic solid waste is openly burned each year in India.

Other findings of the study

Researchers used machine learning to develop an inventory of macroplastics that pollute the environment from 50,702 municipalities based on five land-based sources: uncollected waste, littering, collection system, uncontrolled disposal, and rejects from sorting and reprocessing.

Around 69%, or 35.7 Mt, per year of the world’s plastic waste comes from 20 countries, four of which are low-income (LIC), nine are lower-middle-income (LMC), and seven are upper-middle-income (UMC), the study paper said.

High-income countries have higher plastic waste generation rates but none are ranked in the top 90 polluters, mostly due to 100% collection coverage and controlled disposal.

Despite lower plastic waste generation rates in LICs, LMCs, and UMCs, a large part of it is either uncollected or disposed of in dumping sites, contributing to uncontrolled disposal.

The study also reported more plastic waste is burned than is emitted as debris (physical particles larger than 5 mm) worldwide, which may have a significant impact on human health and ecosystems.

Shortcomings in local and national waste management systems are more evident on a per-capita basis. For example the study found China to be the world’s fourth-largest absolute emitter but 153rd on a per-capita basis. Similarly, India ranked 1 but 127th per capita. Russia on the other hand is the world’s fifth-largest absolute emitter but also has high per-capita emissions, reportedly due to low levels of controlled disposal.

In the Global South, uncollected waste is the largest contributor to plastic pollution. It accounts for 68% of all plastic waste emissions and 85% of all debris emissions, the study estimated. According to the researchers, no other global plastic pollution models explicitly identify uncollected waste as the main source of pollution. Mostly, this is clubbed with “mismanaged waste”.

In high-income countries, littering is the largest source of plastic emissions, accounting for 53% of debris emissions and 49% of all plastic emissions in the Global North.

Mismanagement of rejects from plastics sorting and recycling systems in both Global North and Global South adds around 1 Mt/year of plastic waste emission to the environment, thus showing that it is a comparatively small emissions burden even though it has previously been the focal point of research in the field.

Pointing a way forward

The study said it aimed to create a global inventory of macroplastic pollution at local levels to inform policies designed to reduce plastic emissions and to provide a global baseline for researchers monitoring emissions.

An inventory like this can prove critical to the success of the United Nations’ Plastics Treaty, a draft resolution that negotiators are hoping to turn into an international legally binding agreement by the end of this year. Once finalised, this agreement will aim to end plastic pollution.

The fifth session of the Intergovernmental Negotiating Committee (INC-5) to develop the agreement is scheduled to take place in Busan, South Korea, from November 25 to December 1, 2024.



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Microplastics finally found in human brains, but that’s not the full picture https://artifexnews.net/article68580672-ece/ Thu, 29 Aug 2024 10:49:42 +0000 https://artifexnews.net/article68580672-ece/ Read More “Microplastics finally found in human brains, but that’s not the full picture” »

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Plastic is in our clothes, cars, mobile phones, water bottles and food containers. But recent research adds to growing concerns about the impact of tiny plastic fragments on our health.

study from the United States has, for the first time, found microplastics in human brains. The study, which has yet to be independently verified by other scientists, has been described in the media as scaryshocking and alarming.

But what exactly are microplastics? What do they mean for our health? Should we be concerned?

What are microplastics? Can you see them?

We often consider plastic items to be indestructible. But plastic breaks down into smaller particles. Definitions vary but generally microplastics are smaller than five millimetres.

This makes some too small to be seen with the naked eye. So, many of the images the media uses to illustrate articles about microplastics are misleading, as some show much larger, clearly visible pieces.

Microplastics have been reported in many sources of drinking water and everyday food items. This means we are constantly exposed to them in our diet.

Such widespread, chronic (long-term) exposure makes this a serious concern for human health. While research investigating the potential risk microplastics pose to our health is limited, it is growing.

How about this latest study?

The study looked at concentrations of microplastics in 51 samples from men and women set aside from routine autopsies in Albuquerque, New Mexico. Samples were from the liver, kidney and brain.

These tiny particles are difficult to study due to their size, even with a high-powered microscope. So rather than trying to see them, researchers are beginning to use complex instruments that identify the chemical composition of microplastics in a sample. This is the technique used in this study.

The researchers were surprised to find up to 30 times more microplastics in brain samples than in the liver and kidney.

They hypothesised this could be due to high blood flow to the brain (carrying plastic particles with it). Alternatively, the liver and kidneys might be better suited to dealing with external toxins and particles. We also know the brain does not undergo the same amount of cellular renewal as other organs in the body, which could make the plastics linger here.

The researchers also found the amount of plastics in brain samples increased by about 50% between 2016 and 2024. This may reflect the rise in environmental plastic pollution and increased human exposure.

The microplastics found in this study were mostly composed of polyethylene. This is the most commonly produced plastic in the world and is used for many everyday products, such as bottle caps and plastic bags.

This is the first time microplastics have been found in human brains, which is important. However, this study is a “pre-print”, so other independent microplastics researchers haven’t yet reviewed or validated the study.

How do microplastics end up in the brain?

Microplastics typically enter the body through contaminated food and water. This can disrupt the gut microbiome (the community of microbes in your gut) and cause inflammation. This leads to effects in the whole body via the immune system and the complex, two-way communication system between the gut and the brain. This so-called gut-brain axis is implicated in many aspects of health and disease.

We can also breathe in airborne microplastics. Once these particles are in the gut or lungs, they can move into the bloodstream and then travel around the body into various organs.

Studies have found microplastics in human faecesjointsliversreproductive organsbloodvessels and hearts.

Microplastics also migrate to the brains of wild fish. In mouse studies, ingested microplastics are absorbed from the gut into the blood and can enter the brain, becoming lodged in other organs along the way.

To get into brain tissue, microplastics must cross the blood-brain-barrier, an intricate layer of cells that is supposed to keep things in the blood from entering the brain.

Although concerning, this is not surprising, as microplastics must cross similar cell barriers to enter the urinetestes and placenta, where they have already been found in humans.

Is this a health concern?

We don’t yet know the effects of microplastics in the human brain. Some laboratory experiments suggest microplastics increase brain inflammation and cell damage, alter gene expression and change brain structure.

Aside from the effects of the microplastic particles themselves, microplastics might also pose risks if they carry environmental toxins or bacteria into and around the body.

Various plastic chemicals could also leach out of the microplastics into the body. These include the famous hormone-disrupting chemicals known as BPAs.

But microplastics and their effects are difficult to study. In addition to their small size, there are so many different types of plastics in the environment. More than 13,000 different chemicals have been identified in plastic products, with more being developed every year.

Microplastics are also weathered by the environment and digestive processes, and this is hard to reproduce in the lab.

A goal of our research is to understand how these factors change the way microplastics behave in the body. We plan to investigate if improving the integrity of the gut barrier through diet or probiotics can prevent the uptake of microplastics from the gut into the bloodstream. This may effectively stop the particles from circulating around the body and lodging into organs.

How do I minimise my exposure?

Microplastics are widespread in the environment, and it’s difficult to avoid exposure. We are just beginning to understand how microplastics can affect our health.

Until we have more scientific evidence, the best thing we can do is reduce our exposure to plastics where we can and produce less plastic waste, so less ends up in the environment.

An easy place to start is to avoid foods and drinks packaged in single-use plastic or reheated in plastic containers. We can also minimise exposure to synthetic fibres in our home and clothing.

This article is republished from The Conversation under a Creative Commons license. Read the original article.



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Microplastics finally found in human brains, but that’s not the full picture https://artifexnews.net/article68580672-ece-2/ Thu, 29 Aug 2024 10:49:42 +0000 https://artifexnews.net/article68580672-ece-2/ Read More “Microplastics finally found in human brains, but that’s not the full picture” »

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Plastic is in our clothes, cars, mobile phones, water bottles and food containers. But recent research adds to growing concerns about the impact of tiny plastic fragments on our health.

study from the United States has, for the first time, found microplastics in human brains. The study, which has yet to be independently verified by other scientists, has been described in the media as scaryshocking and alarming.

But what exactly are microplastics? What do they mean for our health? Should we be concerned?

What are microplastics? Can you see them?

We often consider plastic items to be indestructible. But plastic breaks down into smaller particles. Definitions vary but generally microplastics are smaller than five millimetres.

This makes some too small to be seen with the naked eye. So, many of the images the media uses to illustrate articles about microplastics are misleading, as some show much larger, clearly visible pieces.

Microplastics have been reported in many sources of drinking water and everyday food items. This means we are constantly exposed to them in our diet.

Such widespread, chronic (long-term) exposure makes this a serious concern for human health. While research investigating the potential risk microplastics pose to our health is limited, it is growing.

How about this latest study?

The study looked at concentrations of microplastics in 51 samples from men and women set aside from routine autopsies in Albuquerque, New Mexico. Samples were from the liver, kidney and brain.

These tiny particles are difficult to study due to their size, even with a high-powered microscope. So rather than trying to see them, researchers are beginning to use complex instruments that identify the chemical composition of microplastics in a sample. This is the technique used in this study.

The researchers were surprised to find up to 30 times more microplastics in brain samples than in the liver and kidney.

They hypothesised this could be due to high blood flow to the brain (carrying plastic particles with it). Alternatively, the liver and kidneys might be better suited to dealing with external toxins and particles. We also know the brain does not undergo the same amount of cellular renewal as other organs in the body, which could make the plastics linger here.

The researchers also found the amount of plastics in brain samples increased by about 50% between 2016 and 2024. This may reflect the rise in environmental plastic pollution and increased human exposure.

The microplastics found in this study were mostly composed of polyethylene. This is the most commonly produced plastic in the world and is used for many everyday products, such as bottle caps and plastic bags.

This is the first time microplastics have been found in human brains, which is important. However, this study is a “pre-print”, so other independent microplastics researchers haven’t yet reviewed or validated the study.

How do microplastics end up in the brain?

Microplastics typically enter the body through contaminated food and water. This can disrupt the gut microbiome (the community of microbes in your gut) and cause inflammation. This leads to effects in the whole body via the immune system and the complex, two-way communication system between the gut and the brain. This so-called gut-brain axis is implicated in many aspects of health and disease.

We can also breathe in airborne microplastics. Once these particles are in the gut or lungs, they can move into the bloodstream and then travel around the body into various organs.

Studies have found microplastics in human faecesjointsliversreproductive organsbloodvessels and hearts.

Microplastics also migrate to the brains of wild fish. In mouse studies, ingested microplastics are absorbed from the gut into the blood and can enter the brain, becoming lodged in other organs along the way.

To get into brain tissue, microplastics must cross the blood-brain-barrier, an intricate layer of cells that is supposed to keep things in the blood from entering the brain.

Although concerning, this is not surprising, as microplastics must cross similar cell barriers to enter the urinetestes and placenta, where they have already been found in humans.

Is this a health concern?

We don’t yet know the effects of microplastics in the human brain. Some laboratory experiments suggest microplastics increase brain inflammation and cell damage, alter gene expression and change brain structure.

Aside from the effects of the microplastic particles themselves, microplastics might also pose risks if they carry environmental toxins or bacteria into and around the body.

Various plastic chemicals could also leach out of the microplastics into the body. These include the famous hormone-disrupting chemicals known as BPAs.

But microplastics and their effects are difficult to study. In addition to their small size, there are so many different types of plastics in the environment. More than 13,000 different chemicals have been identified in plastic products, with more being developed every year.

Microplastics are also weathered by the environment and digestive processes, and this is hard to reproduce in the lab.

A goal of our research is to understand how these factors change the way microplastics behave in the body. We plan to investigate if improving the integrity of the gut barrier through diet or probiotics can prevent the uptake of microplastics from the gut into the bloodstream. This may effectively stop the particles from circulating around the body and lodging into organs.

How do I minimise my exposure?

Microplastics are widespread in the environment, and it’s difficult to avoid exposure. We are just beginning to understand how microplastics can affect our health.

Until we have more scientific evidence, the best thing we can do is reduce our exposure to plastics where we can and produce less plastic waste, so less ends up in the environment.

An easy place to start is to avoid foods and drinks packaged in single-use plastic or reheated in plastic containers. We can also minimise exposure to synthetic fibres in our home and clothing.

This article is republished from The Conversation under a Creative Commons license. Read the original article.



Source link

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Lego to replace oil in its bricks with pricier renewable plastic https://artifexnews.net/article68576100-ece/ Wed, 28 Aug 2024 08:00:32 +0000 https://artifexnews.net/article68576100-ece/ Read More “Lego to replace oil in its bricks with pricier renewable plastic” »

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A view shows the Lego logo and some bricks inside their headquarters in Billund, Denmark, April 25, 2024.
| Photo Credit: Reuters

Toymaker Lego said on Wednesday (August 28, 2024) it was on track to replace the fossil fuels used in making its signature bricks with more expensive renewable and recycled plastic by 2032 after signing deals with producers to secure long-term supply.

Lego, which sells billions of plastic bricks annually, has tested over 600 different materials to develop a new material that would completely replace its oil-based brick by 2030, but with limited success.

Now, Lego is aiming to gradually bring down the oil content in its bricks by paying up to 70% more for certified renewable resin, the raw plastic used to manufacture the bricks, in an attempt to encourage manufacturers to boost production.

“This means a significant increase in the cost of producing a Lego brick,” CEO Niels Christiansen told Reuters.

He said the company is on track to ensure that more than half of the resin it needs in 2026 is certified according to the mass balance method, an auditable way to trace sustainable materials through the supply chain, up from 30% in the first half of 2024.

“With a family-owner committed to sustainability, it’s a privilege that we can pay extra for the raw materials without having to charge customers extra,” Christiansen said.

The move comes amid a surplus of cheap virgin plastic, driven by major oil companies’ investments in petrochemicals. Plastics are projected to drive new oil demand in the next few decades.

Lego’s suppliers are using bio-waste such as cooking oil or food industry waste fat as well as recycled materials to replace virgin fossil fuels in plastic production.

The market for recycled or renewable plastic is still in its infancy, partly because most available feedstock is used for subsidised biodiesel, which is mixed into transportation fuels.

According to Neste, the world’s largest producer of renewable feedstocks, fossil-based plastic is about half or a third of the price of sustainable options.

“We sense more activity and willingness to invest in this now than we did just a year ago,” said Christiansen. He declined to say which suppliers or give details about price or volumes.

Rival toymaker Hasbro has started including plant-based or recycled materials in some toys, but without setting firm targets on plastic use. Mattel plans to use only recycled, recyclable or bio-based plastics in all products by 2030.

Around 90% of all plastic is made from virgin fossil fuels, according to lobby group PlasticsEurope.



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New research finds abundant microplastics in personal care products available in India https://artifexnews.net/article68572231-ece/ Tue, 27 Aug 2024 12:14:25 +0000 https://artifexnews.net/article68572231-ece/ Read More “New research finds abundant microplastics in personal care products available in India” »

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Personal care products (PCP) like face washes and shower gels in India contain a significant amount of harmful microplastics, new research has revealed.

According to a study published in the Emerging Contaminants journal and led by Riya K. Alex, a third-year Ph.D Scholar at the Cochin University of Science and Technology, polyethylene (or polythene, PE) is the dominant polymer noted in microplastic emissions from PCPs.

What are microplastics?

Microplastics are defined as particles of plastic that are under 5mm in range — in terms of microbeads, under 5mm in diameter and mainly in the range of 1-1,000 micrometres.

Findings of the new research

The research analysed 45 samples of PCP across four categories — face wash, face scrub, shower gel, and body scrub available in Indian market and manufactured in the year 2022. The study especially used products marketed as “eco-friendly”, “natural”, and “organic” to scrutinise the legitimacy of these claims. Around 23.33% of products contained cellulose microbeads, and their biodegradability is unclear. Most of these microbeads were coloured white, followed by blue, pink, yellow, red, and green. According to the researchers, the white colour of microbeads could be intended to hide them from easy identification.

In PCPs, microbeads are widely used for exfoliation, as well as delivery of active ingredients and improved aesthetics, among other uses.

Microbeads in PCP are made of materials like polyethylene, polypropylene, and polyester, with polyethylene being the most dominant polymer identified in more than half the microbeads studied.

On average, 1.34% of the total product of each analysed sample was microbeads. This ranged from 0.04% at the lowest to 5.04% at the highest. In 30 grams of each kind of product, the average quantities of microbeads were noted to be 0.26g, 0.90g,1.24g and 1.74g for face washes, face scrubs, body scrubs, and shower gels respectively. The highest quantities obtained were 2.30g, 1.73g, 1.75g and 4.87g, respectively, whereas the lowest quantities extracted were 0.01g, 0.13g, 0.55g and 0.13g, respectively.

The average sizes of microbeads in samples under study were 640.74 μm, 452.45 μm, 556.66 μm and 606.30 μm for face washes, face scrubs, body scrubs, and shower gels respectively. Shower gels contained the largest microbeads, followed by body scrubs, face scrubs, and face washes.

The study also shows that most microbeads were not spherical but instead irregularly shaped. This is worse for the environment, as irregular shapes provide more surface area for adsorption of other environmental pollutants, and sharper edges can potentially cause cuts and injuries to organisms who ingest them.

The research also found polycaprolactone, a type of bioplastic, in two of the tested samples. Although polycaprolactone is gaining attention as an efficient carrier for drugs, and for its anti-ageing and antibacterial constituents, it has been known to cause embryonic developmental delays and other malformations in aquatic biota.

Findings of the report also indicate greenwashing in the Indian PCP market, especially with labels like “organic”, “natural”, and” eco-friendly.” Brands rely on consumers to not scan the ingredient lists in detail, and the blends of natural and plastic in the same product poses challenges in recognising the presence of plastic.

Why are microbeads bad?

Like most other plastic pollution, microbeads are terrible for the environment. They accumulate in food chains, reach wastewater treatment facilities and eventually end up in oceans causing aquatic pollution.

Many countries, like the U.S., U.K., Canada, France, and New Zealand have banned the production and sale of products with microbeads, but it remains an ambiguous issue in developing countries like India. In 2023, India rose to the fourth position in terms of revenue in global beauty and personal care markets, behind the U.S., China, and Japan.

The 2030 microbead emission forecast for India is “alarmingly high,” researchers say. The trend can go up as well due to an evolving retail landscape, cosmetic trials, and enhanced purchasing power in the coming years.

Are microplastics everywhere?

Yes, microplastics are almost everywhere. A recent study by Toxics Link, a non-government organisation working in the field of environmental research and advocacy, found microplastics ranging from 6.71 to 89.15 pieces per kg of dry weight, and between 0.1 mm to 5 mm in size in several varieties of salt and sugar.

Microplastics have also been found in the human brain, blood, lungs, colon, placenta, testicles, and stool.

The study advocates for better policies to control microplastic pollution in India, and suggests coffee, apricots, walnut, kiwi seeds, and soluble cellulose beads, etc. as some natural and sustainable alternatives to microbeads in PCPs.



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Experts meet as final global plastic treaty talks near https://artifexnews.net/article68561648-ece/ Sat, 24 Aug 2024 07:12:14 +0000 https://artifexnews.net/article68561648-ece/ Read More “Experts meet as final global plastic treaty talks near” »

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Over 90% of plastic is not recycled, with much of it dumped in nature or buried in landfills. File
| Photo Credit: AP

With months until crunch talks on the world’s first binding treaty on plastic pollution, experts are meeting in Bangkok to discuss financing options and problematic plastics.

The four-day gathering is a largely technical waypoint on the road to final negotiations in late November in South Korea’s Busan.

There, countries are hoping to seal a potentially groundbreaking deal to tackle the gargantuan problem of plastic pollution.

The scale of the issue is almost unprecedented – microplastics have been found in the deepest ocean trenches, highest mountain peaks, in clouds and even breastmilk.

Plastic production has doubled in 20 years and at current rates it could triple by 2060, according to the Organisation for Economic Cooperation and Development (OECD).

Yet over 90% of plastic is not recycled, with much of it dumped in nature or buried in landfills.

Negotiators have already met four times to discuss a deal that could include production caps, unified rules on recyclability, and even bans on certain plastics or chemical components.

But significant gaps remain, including on whether the treaty will be adopted by consensus or a majority vote.

“Other flashpoints include whether plastic production will be addressed,” Eirik Lindebjerg, global plastics policy lead at WWF, told AFP.

“Is it within the scope to talk about production, or does the value chain start after plastic products are made? And then if we can regulate production… is it with a cap, is it with a reduction target, what are the measures?” he said. “That’s been a very contentious issue.”

Environmental groups have long argued that the treaty must include curbs on new plastic, a position backed by dozens of countries who call themselves the “high ambition coalition”.

They may now have a powerful ally in the form of the United States, which has reportedly thrown its backing behind some production limits.

That shift has been welcomed by environmental groups, though Mr. Lindebjerg warned it was not yet clear if Washington would back mandatory caps or weaker voluntary limits.

‘Unresolved matters’

Just how binding the deal will be is another source of contention.

Some countries want measures like a unified timeline for phasing out certain plastics, while others back vaguer language that would let nations decide how and when to regulate.

And, as with climate negotiations, finance for implementing whatever is agreed remains hugely controversial.

“Some countries want money, and some countries don’t want to give money, very simply put,” said Mr. Lindebjerg.

Two expert groups are meeting in Bangkok, with one focused on financing, including technical details on waste management systems and how to implement “polluter pays” principles.

The second group will focus on a framework and criteria for chemicals, plastic materials and plastic products that could be targeted for bans or reductions in the treaty.

The meetings are advisory and are being held behind closed doors, to the dismay of some environmental groups and industry.

“There are still a lot of unresolved matters,” warned Chris Jahn, council secretary of the International Council of Chemical Associations, which represents the global chemical industry.

The group opposes language that would regulate chemicals or cap plastic production.

“Plastics are essential in order for the world to achieve its sustainable development and climate change goals,” Mr. Jahn said, pointing to uses from solar energy to food preservation.

The American Chemistry Council last week warned U.S. backing for production caps would “betray” U.S. manufacturing and risk jobs.

“The industry does back efforts to promote the reuse of plastics and new designs to make recycling easier,” Mr. Jahn said, “as well as rules to make producers pay for plastic pollution.

And despite the remaining gaps, there is cautious optimism that a robust deal is possible.

“I think that we’re really at a historic opportunity here,” said Mr. Lindebjerg.



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Japanese scientists find microplastics are present in clouds https://artifexnews.net/article67356549-ece/ Thu, 28 Sep 2023 10:25:50 +0000 https://artifexnews.net/article67356549-ece/ Read More “Japanese scientists find microplastics are present in clouds” »

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Marine scientist Anna Sanchez Vidal shows microplastics collected from the sea with a microscope at Barcelona’s University, during a research project “Surfing for Science” to assess contamination by microplastics on the coastline, in Barcelona, Spain, July 5, 2022. (Image for Representation)
| Photo Credit: Reuters

Researchers in Japan have confirmed microplastics are present in clouds, where they are likely affecting the climate in ways that aren’t yet fully understood.

In a study published in Environmental Chemistry Letters, scientists climbed Mount Fuji and Mount Oyama in order to collect water from the mists that shroud their peaks, then applied advanced imaging techniques to the samples to determine their physical and chemical properties.

The team identified nine different types of polymers and one type of rubber in the airborne microplastics — ranging in size from 7.1 to 94.6 micrometers.

Each liter of cloud water contained between 6.7 to 13.9 pieces of the plastics.

What’s more, “hydrophilic” or water-loving polymers were abundant, suggesting the particles play a significant role in rapid cloud formation and thus climate systems.

Also Read | Scientists find microplastics in blood for first time

“If the issue of ‘plastic air pollution’ is not addressed proactively, climate change and ecological risks may become a reality, causing irreversible and serious environmental damage in the future,” lead author Hiroshi Okochi of Waseda University warned in a statement Wednesday.

When microplastics reach the upper atmosphere and are exposed to ultraviolet radiation from sunlight, they degrade, contributing to greenhouse gasses, added Okochi.

Microplastics — defined as plastic particles under 5 millimeters — come from industrial effluent, textiles, synthetic car tires, personal care products and much more.

These tiny fragments have been discovered inside fish in the deepest recesses of the ocean peppering Arctic sea ice and blanketing the snows on the Pyrenees mountains between France and Spain.

But the mechanisms of their transport have remained unclear, with research on airborne microplastic transport in particular limited.

“To the best of our knowledge, this is the first report on airborne microplastics in cloud water,” the authors wrote in their paper.

Emerging evidence has linked microplastics to a range of impacts on heart and lung health, as well as cancers, in addition to widespread environmental harm.



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