Plastic started "masked" by the stones. What is it dangerous?
plastic waste pollution every day becoming more and more the character of a natural disaster. Sinister plastic has already begun to poison the marine plankton and even "got" to the northernmost point of the planet - the Arctic. At the same time finding new and new dangers of this material. For example, recently a group of environmentalists found out that the plastic began to "hidden" under the stones and pebbles usual. And it is much more dangerous than it might seem at first glance.
Why plastic similar to the stones and pebbles
This "masked" plastic, having a darkish color, is called "piroplastik". Piroplastik formed by heating conventional plastics either initially during manufacture or after disposal. Simply put, probably almost all of us burned plastic bottles. Both are compressed in the combustion process and blackened. What happens in the end - this is piroplastik.
How dangerous piroplastik
Something similar has already detected previously in Hawaii. Some time ago on the sandy beaches were found "plastiglomeraty" - pieces of plastic, melted in the fire, mixed with sand and shells. Now the stone-like plastic structures began to show up almost everywhere.
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As piroplastika pieces like the stones they are, which is logical, often escape our attention, and even cleaning crews may not notice a huge number of dangerous plastic. It should be understood that piroplastik not similar to the regular plastic. He much as harmful.
Piroplastiki formed by melting or burning and differ greatly from manufactured (primary and secondary) plastics. As a result of thermal effects piroplastik becomes highly toxic to the environment - the researchers wrote in an article published in the journal Science of the Total Environment. Since piroplastiki were found on the beaches of our colleagues in Spain and near Vancouver, it is clear that piroplastik is no longer a local phenomenon. And we have a suspicion that piroplastik can be very widely rasprstranen. Not least from the fact that has the ability to "masquerade" as ordinary stones.
And still the main danger piroplastikov not the point. Ecologist Andrew Turner of the University of Plymouth and his colleagues conducted a series of studies. They took 165 piroplastika pieces from the beaches of the Gulf Whitsunday in Cornwall and 30 pieces from the Orkney Islands in Scotland. The team subjected the samples tested, to find out what they are made. Spectroscopy showed that the samples were essentially any polyethylene (commonly used in plastic bags and packages for creating products), polypropylene (rigid plastic commonly used for bottles and containers), or a combination thereof. And you use plastic utensils? Tell us about it in our chat in the Telegram.
Conventional plastic products can be converted into "stones". At first glance, to distinguish such "gems" from this very difficult
Further X-ray fluorescence analysis revealed the presence of lead in plastics (often accompanied chromium). This implies the presence of lead chromate, compounds which may be mixed with the plastic to give it a yellow, red or orange color. Its use has been limited by the Directive on the restriction of hazardous substances (the RoHS), but the amount detected in samples exceeding the limits of RoHS, which means that the found plastic was released until 2003 (that's when the directive was issued).
In fact because of the toxic and mutagenic properties of chromate of lead in the manufacture of plastic products has been limited. However, as we have seen, it was not enough. And it is extremely dangerous not only plastic with no problems poison the environment, but also "masked" by the stones and pebbles, making it difficult to clean away the beach and water.