Ecotoxicity of nanoparticles of CuO and ZnO in natural water

被引：352

作者：

Blinova, I. ^{[1
]}

Ivask, A. ^{[1
]}

Heinlaan, M. ^{[1
,2
]}

Mortimer, M. ^{[1
,3
]}

Kahru, A. ^{[1
]}

机构：

[1] NICPB, Mol Genet Lab, EE-12618 Tallinn, Estonia

[2] Estonian Univ Life Sci, EE-51014 Tartu, Estonia

[3] Tallinn Univ Technol, EE-12618 Tallinn, Estonia

来源：

ENVIRONMENTAL POLLUTION | 2010年 / 158卷 / 01期

关键词：

Metal oxide nanoparticles; Bioavailability; Crustaceans; Protozoa; Recombinant luminescent sensor bacteria; DISSOLVED ORGANIC-MATTER; BIOTIC LIGAND MODEL; COPPER TOXICITY; DAPHNIA-MAGNA; ZINC; SPECIATION; BIOAVAILABILITY; ADSORPTION; BEHAVIOR; PH;

D O I：

10.1016/j.envpol.2009.08.017

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

The acute toxicity of CuO and ZnO nanoparticles in artificial freshwater (AFW) and in natural waters to crustaceans Daphnia magna and Thamnocephalus platyurus and protozoan Tetrahymena thermophila was compared. The L(E)C-50 values of nanoCuO for both crustaceans in natural water ranged from 90 to 224 mg Cu/l and were about 10-fold lower than L(E)C-50 Values of bulk CuO. In all test media, the L(E)C-50 values for both bulk and nanoZnO (1.1-16 mg Zn/l) were considerably lower than those of nanoCuO. The natural waters remarkably (up to 140-fold) decreased the toxicity of nanoCuO (but not that of nanoZnO) to crustaceans depending mainly on the concentration of dissolved organic carbon (DOC). The toxicity of both nanoCuO and nanoZnO was mostly due to the solubilised ions as determined by specific metal-sensing bacteria. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：41 / 47

页数：7

共 48 条

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