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Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, but require much higher impact-resistance. Polycarbonate lenses also protect the eye from UV light.
Polycarbonate plastic, which is formed from BPA, is used to make a variety of common products including baby and water bottles, sports equipment, medical and dental devices, dental fillings sealants, CDs and DVDs, household electronics, eyeglass lenses, [6] foundry castings, and the lining of water pipes. [9]
Plastic pollution, specifically microplastics, are a major contributor of PCBs into the biosphere and especially into marine environments. PCBs concentrate in marine environments because freshwater systems, like rivers, act as a bridge for plastic pollution to be transported from terrestrial environments into marine environments. [ 45 ]
This lead to a European Union on 19 December 2024 to ban BPA in all the food contact materials, including plastic and coated packaging [91]. The ban will come into force after an implementation period of up to three years. BPA exhibits very low acute toxicity (i.e. from a single large dose) as indicated by its LD 50 of 4 g/kg (mouse).
A polycarbonate is an oxocarbon dianion consisting of a chain of carbonate units, where successive carbonyl groups are directly linked to each other by shared additional oxygen atoms. That is, they are the conjugate bases of polycarbonic acids , the conceptual anhydrides of carbonic acid , or polymers of carbon dioxide .
A sign of a "healthy" body, "Venus dimples" sit right at the base of the spine. And just like facial dimples, people are flocking to the plastic surgeon to replicate the indentations of Kendall ...
Image credits: nineteensickhorses #3. Heather Teague. She was dragged into the woods from a riverbank. The abduction was witnessed from across the river by a man using a telescope.
Plastic pollution can be found in all the world's major water bodies, for example, creating garbage patches in all of the world's oceans and contaminating terrestrial ecosystems. Of all the plastic discarded so far, some 14% has been incinerated and less than 10% has been recycled. [6]