Surprise of seafood: Nanoplasty can be introduced and lengthen the scales


A new study shows that small pieces of plastic care for marine organisms and seafood.

Ocean plastic, microplastics, nanoplastics

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If you order seafood these days, you may have a plastic side, whether you like it or not.

A new study funded by the U.S. Natural Environmental Research Council has found that small particles of plastic particles, called microplastics or nanoplastics, accumulate in the intestines and other large-scale organs, a commercially important species that is a food crop.

Although a new study has used laboratory conditions to determine the absorption of nanoplastic agents, it points to current issues of ocean pollution and growing concerns about microplastic and marine organisms.

The study was led by the University of Plymouth in England and published in the journal Environmental Science and TechnologyIt is the first to investigate the extraction of nanoplastics "under conditions suitable for the predicted environment." In other words, laboratory experiments have been developed to approximate the current level of plastic pollution in the world's oceans.

Related: This is not just an ocean problem. Microplastic polluting rivers, lakes and lands, too.

The results were alarming. Tests have found that in just six hours of exposure in the lab, billions of particles of nanoplastic particles have accumulated in the intestines of scars. The particles found in the intestines are indeed very small, about 250 nanometers. For comparison, note that a piece of human hair is about 100,000 nanometers thick.

"Research has shown for the first time that nanoparticles can be obtained quickly by the marine organism."

Even more interesting, the research team found that even smaller particles of plastic – about 20 nanometers around – were found elsewhere in the body, including in the kidneys, gums, muscles and other organs.

"The results of the study showed for the first time that nanoparticles can be rapidly absorbed by the marine organism and in just a few hours they will be distributed to most of the major organs," said project leader Maya al-Sid Cheik. statement.

Some scalps are used as part of ongoing research. | University of Plymouth

Subsequent tests confirmed that the plastic particles are gaining traction in the system after maintaining the trend. Small particles of 14 nm were detected at least 14 days later, and larger 250 nm particles took 48 days to be completely stolen from the system.

Richard Thompson, head of the research department at the University's International Maritime Building Department, called the results of the study both a scientific approach and a conclusion.

Related: Your powder is plastic: the microplastics penetrate the human body

"We only removed the debris from the nanoparticles in just a few hours, and even though they were in clean conditions, the traces were still there a few weeks later," he said. "Understanding the dynamics of the extraction and release of nanoparticles and their distribution in body tissues is essential if we understand any potential effects on the body."

The study was attended by scientists from the Charles River Laboratories in Elphinstone, Scotland; Morris La Montaigne Institute in Canada; And Heriot-Watt University in Edinburgh, Scotland.

Although the new study does not directly address the issue of plastics in human food supply, Ted Henry, a professor of ecological toxicology at the University of Heriot-Watt, said the work is a step forward in the first phase.

"Understanding whether plastic particles are absorbed into biological membranes and whether internal organs accumulate is crucial to assessing the risk to these organisms as well as to human health," he said.