More specifically, the simple fact of dipping an empty plastic tea bag at 95 degrees Celsius can release more than 2 million microparticles of plastic size between 1 and 150 microns, and almost 15 billion nanoparticles and microplastics measuring less than 1 micrometer.
The four brands of tea they tested got right here from traditional grocery shops in Montreal.
Researchers found the plastic was coming from the tea bags themselves, not the tea (file photo). However, those *premium* pyramid ones that are apparently created to infuse your tea better are usually made out of plastic-based mesh.
The researchers then examined the water for leftover particles, placing drops on a scramble and inspecting them beneath an electron microscope.
"I said, 'Oh God, I'm sure if it's plastic it's, like, breaking down into the tea, '" she told CBC News. There, moreover they are able to stare particles of diverse sizes, some a small elevated, some frighteningly tiny. For the study, researchers used four different commercial teas and heated plastic teabags to simulate brewing conditions.
That's thousands of times higher than the amount of plastic that's been found in other kinds of food or drinks. The researchers cut open the bags, removed the tea leaves and washed the empty bags. A number of the particles, she famous, could be sufficiently small to doubtlessly infiltrate human cells.
Apparently, we already eat quite a bit of plastic as it is - enough to equal the weight of a credit card, every week. Researchers on the College of Newcastle in Australia compiled dozens of research on the presence of plastic in water, in addition to in meals akin to shellfish and even beer. Whereas the well being implications of consuming plastic are unknown, folks world wide are inadvertently consuming various it.
Although the water fleas survived, they showed "some anatomical and behavioral abnormalities", according to the ACS statement.
Scientists have detected the microscopic particles in the environment, aquatic organisms and the food supply, but they don't know yet whether they are harmful to humans, reported the study published in the journal "Environmental Science & Technology".
"Tea can be purchased in paper tea bags or as loose-leaf tea, which eliminates the need for this single-use plastic packaging", researchers told New Scientist.
"We just wanted to make the public aware of this", she said.
Yorkshire Tea wrote in February 2019: 'We want to be more environmentally friendly - including changing our tea bags so they're sealed with a renewable, plant-based material'.