Effects of Silver Nanoparticles on Soil Enzyme Activity of Different Wetland Plant Soil Systems

被引：20

作者：

Cao, Chong ^{[1
]}

Huang, Juan ^{[1
]}

Cai, Wen-Shu ^{[1
]}

Yan, Chun-Ni ^{[1
]}

Liu, Jia-Liang ^{[1
]}

Jiang, Yao-Dong ^{[1
]}

机构：

[1] Southeast Univ, Dept Municipal Engn, Sch Civil Engn, Nanjing, Jiangsu, Peoples R China

来源：

SOIL & SEDIMENT CONTAMINATION | 2017年 / 26卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Silver nanoparticles (Ag NPs); rhizosphere; soil exoenzymes activities; wetland plants; ENGINEERED NANOPARTICLES; TOXICITY; ENVIRONMENT; EXPOSURE; UREASE; METALS; ASSAY; AG;

D O I：

10.1080/15320383.2017.1363158

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the present study, five soil exoenzymes (dehydrogenase, urease, acid phosphatase, neutral phosphatase, and alkaline phosphatase) were investigated in rhizosphere of wetland plants (Iris wilsonii, Arundo donax, and Typha orientalis) treated with silver nanoparticles (0, 0.024, 0.24, 4.80, and 9.60g/g dry soil). It was found that Ag NPs were capable of inhibiting all exoenzyme activities tested in this study, with inhibitory effects especially obvious to higher Ag NPs level (4.80 and 9.60g/g dry soil). However, for lower Ag NPs concentration (0.024g/g dry soil), the adverse effects on exoenzymes was only found in T. orientalis rhizosphere, the exoenzyme activities in rhizosphere of I. wilsonii were less affected. This study suggested that high concentration Ag NPs could negatively affect all soil exoenzyme activities, while the impacts of low Ag NPs level on exoenzyme activities were mainly related to plant species.

引用

页码：558 / 567

页数：10

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