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The toxicological impact of nanoparticles



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The toxicological impact of nanoparticles Nanotechnology is a relatively new and vast field The increased presence of nanomaterials in commercial products such as cosmetics and sunscreens dental fillings photovoltaic cells and water filtration and catalytic systems has resulted in a growing public debate on the toxicological and environmental effects of direct and indirect exposure to these materials At present these effects are not completely elucidated Roberta Brayner Interfaces Traitements Organisation et Dynamique des Syst mes ITODYS Universit Paris Diderot UMR CNRS 7086 case 7090 2 place Jussieu 75251 Paris Cedex 05 France E mail roberta brayner univ paris diderot fr Even though nanotechnology is a fairly new field nanomaterials CdSe ZnS etc Unfortunately toxicological studies carried out in are not Au and Ag nanoparticles NPs were used in Persia in the the last ten years have shown that ultrafine particles d 100 nm 10th century BC to fabricate ceramic glazes to provide a lustrous pose serious problems to the lungs4 6 It has been demonstrated that or iridescent effect This technique was then brought to Spain some NPs cause more inflammation than larger respirable particles where it was improved by the Moors during the 14th century made from the same material when delivered at the same mass dose before finally spreading throughout much of Europe1 In addition This behavior has been observed for a range of different materials over 5000 years ago the Egyptians ingested Au NPs for mental of generally low toxicity such as carbon black CB and TiO27 For and bodily purification2 In all cases the users did not know that example micronized or ultrafine 20 50 nm TiO2 a so called they were NPs microreflector US Federal Register 43FR38206 25 August 1978 The study of the toxicity of nanomaterials toxicity on living has been known to be a safe physical sunscreen because it reflects cells and within the context of environmental air pollution is a and scatters ultraviolet UV B



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