Tag Archives: microbeads

Environment Exposure to Microplastics and Affiliated Toxic Chemicals

A guest post by Mai Lei

The following post is one of a series previewing the research that will be presented at the SETAC North America 29th Annual Meeting in Sacramento, California (4–8 November 2018).

Can you imagine our beautiful planet becoming a “plastic planet”? In the BBC documentary film Blue Planet II, members of the producing team noted that plastic waste is ubiquitously floating in the sea, including fishing lines, plastic packages, and plastic bottles. Marine organisms can be trapped by plastic waste that is everywhere in the oceans, even in the deepest and most remote parts. So it is essential to carry out intensive studies of plastic waste. Large plastics can either be physically or chemically broken into fragments after having been in the water a long time, traveling long distances. Such fragments, coupled with ones that were released into seas as fine plastic particles (smaller than 5 mm), are collectively called microplastics.

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Surface water trawling for floating microplastic collection on the Pearl River estuary in China.  Inset pictures are pieces of microplastic (fragments, pellets, and lines) from the trawl.  Credit: Lei Mai.

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Small but Mighty: New Research on the Impacts of Microplastics

A guest post by Erica K. Brockmeier

The following post is one of a series generated from research presented at the SETAC Europe Annual Meeting in Brussels, Belgium (7-11 May 2017). Each post features the latest research findings from SETAC scientists on emerging topics of interest.

What are microplastics and why should we care about them?

Microplastics are pieces of plastic or polymer debris that are very small in size, ranging from a shard as narrow as the width of a hair to a piece as large as a marble. Microplastics include pieces of plastic that are broken down from larger items, such as single-use water bottles, or ‘microbeads’ that are added to certain soaps and exfoliators.

Even though microplastics are small, there are concerns they can cause serious damage. Animals that confuse microplastics for food can end up with internal lacerations, inflammation, and nutrient deficiency caused by eating too much inedible material. Microplastics are also widely spread across the globe—scientists calculated that up to 90% of marine birds have ingested microplastics.

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Microplastic particles among sand grains. Credit: 5Gyres, courtesy of Oregon State University, CC BY-SA 2.0.

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Insidious Danger: Microplastics Pollute Aquatic Life and Harm Our Food Supply

By Roberta Attanasio, IEAM Blog Editor

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Microplastics in the Chesapeake Bay Watershed. Credit: Chesapeake Bay Program, CC BY-NC 2.0.

Microplastics—the tiny bits of plastic that are now infamously and ubiquitously present in the world’s waterways—are polluting aquatic life and ending up in our food supply. As evidence of the damage that microplastics inflict on aquatic life accumulates, so does the amount of microplastics dispersed in oceans, seas, lakes, and rivers. Virtually indestructible in natural environments, these tiny bits of plastic contain a combination of very small particles—microparticles and nanoparticles—that derive from the breakdown of larger plastic items, for example plastic bags and bottles, and include, among others, pre-production plastic pellets (the so-called nurdles), microbeads from personal care products, and microfibers from textiles.

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