The 4 manufacturers of tea they examined got here from common grocery shops in Montreal. Through electron microscopy, researchers found that a single plastic teabag released 11.6 billion microplastic and 3.1 billion nanoplastic particles into the water.
This is usually so that the tea bag is held in a pyramid shape, which producers claim helps the tea leaves infuse better. However, those *premium* pyramid ones that are apparently created to infuse your tea better are usually made out of plastic-based mesh. "Personally, I would say avoid the plastic tea bags because it's just another single-use plastic", she adds. There, they might see particles of various sizes, some a little bit bigger, some frighteningly small.
The team removed the tea from inside the bags to prevent it from interfering with the results, before boiling the bags in water to simulate the tea-making process. Further testing of additional samples revealed their structures and confirmed that the material was made of the same plastic materials as PET, a kind of polyester, and nylon. That's the takeaway from a new study at Canada's McGill University, reports the BBC.
Though Tufenkji declined to title the brands they frail for ache of singling out one firm over others, she acknowledged that some frequent tea drinkers may perhaps be most incessantly dosing themselves with billions of particles of plastic as they drank the beverage day after day. A number of the particles, she famous, could be sufficiently small to doubtlessly infiltrate human cells. "We desire shoppers to know that right here's fabricated from plastic to permit them to have the choice about whether right here's if truth be told what they're searching out for to defend end".
Humans eat an average of 5 grams of plastic each week, according to a separate study earlier this year - the equivalent of a credit card's weight in plastic. Researchers then tested the teabags with water fleas. The World Health Organization concluded last month that plastic particles in drinking water were a "low" risk to humans at their current levels.
Microplastics are tiny pieces of plastic, which the researchers defined as ranging from 100nm to 5mm in size, which are mostly created by the disintegration of plastic litter.
Whereas the McGill survey didn't explore the human well being impacts of ingesting this plastic, when a few of the particles had been given to water fleas, they started acting erratically and developed some deformities, Tufenkji acknowledged.
She noted this is a chance for consumers, like those looking to reduce their plastic use, to be more aware of their purchases.