Environmental impact of silver nanoparticles | Wikipedia audio article
Channel: wikipedia tts
Date: 15/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Environmental_impact_of_silver_nanoparticles


00:00:47 1 Silver nanoparticles in toothpaste
00:02:53 1.1 Wastewater treatment
00:05:33 1.2 Transformation in the environment
00:07:24 1.2.1 Chemical reactions in seawater
00:10:22 1.2.2 Effect on bacteria
00:12:10 1.2.3 Toxicology in aquatic environments
00:14:28 2 See also



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SUMMARY
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In 2015, 251 million tubes of toothpaste were sold in the United States. A single tube holds roughly 170 grams of toothpaste, so approximately 43 kilotonnes of toothpaste get washed into the water systems annually. Toothpaste contains silver nanoparticles, also known as nanosilver or AgNPs, among other compounds.Each tube of toothpaste contains approximately 91 mg of silver nanoparticles, with approximately 3.9 tonnes of silver nanoparticles entering the environment annually. Silver nanoparticles are not entirely cleared from the water during the wastewater treatment process, possibly leading to detrimental environmental effects.