The study was jointly conducted by scientists from the […]
The study was jointly conducted by scientists from the Vienna Medical University and the Austrian Environment Agency. They also collaborated with a team of eight participants from Finland, Italy, Japan, Poland, the Netherlands, the United Kingdom, Russia and Austria. Volunteers aged 33 to 65 years underwent a one-week diet control and eventually provided stool samples for study.
“Plastic is ubiquitous in everyday life, and humans are exposed to plastic in too many ways, but I personally didn’t think that every sample could detect microplastics.” The first author of the study, Gastroenterology, Vienna University of Medicine Philipp Schwabl said, "The results are shocking."
It is reported that six of them have eaten marine Plastic Thin Wall Mold Manufacturers fish during this period. None of them are vegetarians, but all of them are eating plastic-packed food and drinking plastic bottles.
After collecting the feces of the volunteers, the researchers analyzed the Fourier transform infrared microspectroscopy and found that all the samples contained plastic particles. The Austrian Environmental Protection Agency tested 10 common plastics for the feces and found them in the feces. 9 kinds of plastic particles.
The most common types of plastics are Polypropylene and polyethylene terephthalate, both of which are the main components of plastic bottles and caps. On average, 20 plastic particles can be detected every 10 grams. According to the study, Schwabl estimates that 50% of the world's population has microplastics, but this requires further research to confirm.
More than 90% of the salt is contaminated by micro-plastics
Asian brands have higher levels of microplastics
Salt is an indispensable seasoning for us, but every time you add salt to your cooking, you are likely to add micro-plastics that are hard to see. A few years ago, researchers discovered microplastics in sea salt. However, it is unclear how widely the distribution of plastic fragments is in the most commonly used seasonings.
Now, a new study finds that more than 90% of the salt brands sold worldwide are contaminated with plastics, with the highest levels of plastic in sea salt. And even the rock salt brand analyzed in the study was found to be contaminated by microplastics.
The research results were published in the journal Environmental Science and Technology, and the research was published by the Greenpeace East Asia Division and Korean researchers. The researchers collected 39 brands of table salt from 21 countries in Asia, Africa, South America, North America and Europe, of which only 3 did not contain microplastic particles.
A total of 39 salt brands were investigated and only three were found to be free of microplastics from Taiwan (refined sea salt), China (refined rock salt) and France (non-refined sea salt produced by solar evaporation). Studies have shown that on average, each adult eats 2,000 microplastic granules a year because of salt.
The findings are consistent with previous studies of plastics found in salt, but recent research highlights the prevalence of plastic pollution problems, with salt from oceans, lakes and rocks being contaminated.
The study found that the density of microplastics found in different brands of salt varies widely, but the density of Asian brands is particularly high. The highest amount of microplastics was found in the salt sold in Indonesia. Asia is a high-incidence area for plastic pollution, while Indonesia has a coastline of 54,520 kilometers long and was listed as the second most severely polluted country in the world in an unrelated study in 2015.
The mussels you eat often become the hardest hit area of micro-plastics.
Where did these microplastics come from inside the human body?
Clothing made of man-made fibers, while tumbling in the washing machine, may have allowed plastic particles to enter the water cycle. Facial cleanser and shower gel containing soft beads, and unwittingly let the plastic into the sewer.
Humans produce an average of 8 million tons of plastic waste per year, which enters the ocean from coastal areas. Under the combined action of sunlight and waves, these plastic wastes become small particles that pollute the ocean and enter marine life. On the land, microplastics are everywhere. Fibers on synthetic clothing, especially polyester and acrylic, drain through the washing machine into the freshwater system.
“The vast majority of experimental participants drink bottled water, and fish and seafood are more common,” says Schwarb. “It is very likely that food is contaminated with micro-plastics at all steps of processing and packaging.”
Whether it is eating food that has already been contaminated, or unconsciously eating tiny plastics on food packaging, it can cause micro-plastic contamination in the human body.
The researchers found that German beer has a microplastic content of up to 150 per liter, up to 400 per kilogram of honey, and up to 13,000 per kilogram of soft tissue in Canadian cultured mussels.
A study has predicted that people who regularly eat shellfish can eat 11,000 pieces of microplastics a year.
In June of this year, a study published by the University of Hull and Brunel University of London showed that all the mussels (Qingkou) sold in the UK market found microplastic particles. On average, there are 70 microplastic granules per 100 grams of mussels. Moreover, the micro-plastic content of wild mussels is usually higher than that of cultured mussels.
Based on the average annual intake, Europeans consume up to 11,000 micro-plastics per person per year through the consumption of shellfish. According to the current analysis, the maximum amount of micro-plastics per person per year through edible sea salt is 1,000.
“There are so many different polymers found in the human body, which means that the source of pollution is very wide,” said Stephanie White, an environmental health scientist at King's College London. Two participants in the experiment did not eat seafood and still detected microplastics.
"If humans do not change the status quo, the degree of plastic pollution will further deteriorate." Schwarbour stressed that humans need to reduce the use of plastic products and improve recycling.