Genotoxicity and effects of nanosilver contamination in drinking water disinfection

Dobrović, Slaven and Juretić, Hrvoje and Ljubas, Davor and Vinković Vrček, Ivana and Zebić Avdičević, Maja and Milić, Mirta and Kopjar, Nevenka and Nemet, Ina (2012) Genotoxicity and effects of nanosilver contamination in drinking water disinfection. = Genotoxicity and effects of nanosilver contamination in drinking water disinfection. Water Science and Technology: Water Supply, 12 (6). pp. 829-836. ISSN 1606-9749. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q4 (2013). Točan broj autora: 8.

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Official URL: http://ws.iwaponline.com/content/12/6/829.abstract

Abstract

This study was conducted to examine the genotoxicity and the influence of silver nanoparticles (AgNPs) contamination when drinking water is exposed to five different disinfection treatments: chlorine, chlorine dioxide, ozone, ozone/chlorine and ozone/chlorine dioxide. Experiments were conducted with water samples of different chemical composition, from three water supply systems in Croatia. AgNPs are of interest because of their use as an antimicrobial in numerous commercial products, and as a drinking water disinfection agent. To examine possible effects of AgNP contamination, the disinfection treatments were repeated with AgNPs in the water samples. AgNP contamination generally caused a decrease in the level of trihalomethanes by up to 59. Influence of AgNPs on bromide ion incorporation into disinfection by-products (DBPs) was also examined. The most obvious example was the Osi water where ozonation step prior to chlorination increased the bromine incorporation factor from 0.156 to 0.339, while addition of AgNPs limited the increase to 0.249. Also, AgNP presence in almost all disinfection treatments increased dicarbonyl disinfection by-products. All treated waters were tested for genotoxicity using the comet assay and showed similar genotoxic potential. The results are preliminary, but could provide a basis for further studies evaluating the environmental impact of AgNPs in natural aquatic systems.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Bromide ions; Chemical compositions; Chlorine dioxides; Comet assays; Commercial products; Croatia; Disinfection by-product; Disinfection byproducts; Disinfection treatments; Drinking water disinfection; Exposed to; Genotoxic; Genotoxicities; Nano silver; Natural aquatic systems; Ozone/chlorine; Silver nanoparticles; Silver nanoparticles (AgNps); Trihalomethanes; Water samples; Antimicrobial agents; Contamination; Environmental impact; Nanoparticles; Ozone; Ozone water treatment; Ozonization; Potable water; Silver; Water supply systems; Disinfection; bromide ion; chlorine; chlorine dioxide; drinking water; natural organic matter; organic carbon; ozone; silver nanoparticle; trihalomethane; chemical composition; disinfection; drinking water; genotoxicity; nanotechnology; pollution effect; water supply; aquatic environment; article; chemical composition; chlorination; comet assay; Croatia; disinfection; environmental impact; genotoxicity; ozonation; sample; water contamination; water quality; water supply; Croatia
Subjects: TECHNICAL SCIENCE
Divisions: 500 Department of Energy, Power Engineering and Environment > 540 Chair of Water and Environmental Engineering
Indexed in Web of Science: Yes
Indexed in Current Contents: Yes
Quartiles: Q4 (2013)
Date Deposited: 30 Apr 2015 09:58
Last Modified: 05 Jun 2017 14:12
URI: http://repozitorij.fsb.hr/id/eprint/3903

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