Behavior of Ag nanoparticles in soil: Effects of particle surface coating, aging and sewage sludge amendment

被引：111

作者：

Whitley, Annie R. ^{[1
,2
]}

Levard, Clement ^{[2
,3
]}

Oostveen, Emily ^{[1
,2
]}

Bertsch, Paul M. ^{[1
,2
]}

Matocha, Chris J. ^{[1
]}

von der Kammer, Frank ^{[4
]}

Unrine, Jason M. ^{[1
,2
]}

机构：

[1] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA

[2] Duke Univ, Ctr Environm Implicat Nanotechnol, Durham, NC 27708 USA

[3] Aix Marseille Univ, CNRS, CEREGE, UMR 7330, F-13545 Aix En Provence, France

[4] Univ Vienna, Dept Environm Geosci, A-1090 Vienna, Austria

来源：

ENVIRONMENTAL POLLUTION | 2013年 / 182卷

基金：

美国国家环境保护局; 美国国家科学基金会;

关键词：

Agriculture; Biosolids; Detection; Nanotechnology; Weathering; COATED SILVER NANOPARTICLES; MICROCOSMS DETERMINE FATE; ABIOTIC INTERACTIONS; ORGANIC-MATTER; WASTE-WATER; TOXICITY; DISSOLUTION; TRANSPORT; TRANSFORMATION; AGGREGATION;

D O I：

10.1016/j.envpol.2013.06.027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study addressed the relative importance of particle coating, sewage sludge amendment, and aging on aggregation and dissolution of manufactured Ag nanoparticles (Ag MNPs) in soil pore water. Ag MNPs with citrate (CIT) or polyvinylpyrrolidone (PVP) coatings were incubated with soil or municipal sewage sludge which was then amended to soil (1% or 3% sludge (w/w)). Pore waters were extracted after 1 week and 2 and 6 months and analyzed for chemical speciation, aggregation state and dissolution. Ag MNP coating had profound effects on aggregation state and partitioning to pore water in the absence of sewage sludge, but pre-incubation with sewage sludge negated these effects. This suggests that Ag MNP coating does not need to be taken into account to understand fate of AgMNPs applied to soil through biosolids amendment. Aging of soil also had profound effects that depended on Ag MNP coating and sludge amendment. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：141 / 149

页数：9

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