Document Detail

Use of anodic stripping voltammetry in predicting toxicity of copper in river water.
MedLine Citation:
PMID:  12206417     Owner:  NLM     Status:  MEDLINE    
The labile concentration and toxicity of Cu as influenced by alkalinity and different concentrations of ethylenediaminetetraacetic acid (EDTA) and naturally derived fulvic acid (FA) were determined by bioassays carried out in the culture media for Daphnia magna (D. magna). The labile concentration of Cu was obtained by differential pulse anodic stripping voltammetry with a double-acidification method (DAM-DPASV). Changes in water alkalinity did not affect the labile concentration of Cu, but increase in alkalinity did reduce the mortality of D. magna. In the presence of EDTA and FA, both labile concentration of Cu and mortality were reduced. By excluding Cu-carbonate complexes from the labile concentration, a bioavailable concentration of Cu ([Cu*]) was obtained and was used to predict the acute toxicity of Cu on D. magna. For natural waters, the labile concentration of Cu was measured by DAM-DPASV, and [Cu*] was calculated using MINTEQ A2 software (developed by the U.S. Environmental Protection Agency) based on the anion composition of waters. This procedure was tested for waters and sediment elutriates sampled from the Le An River (Jiangxi Province, China) that were severely polluted by the discharges from a copper mine. The results showed that [Cu*] was a good indicator for Cu toxicity and could be used under field conditions.
Zujian Wang; Shengbiao Huang; Qing Liu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental toxicology and chemistry / SETAC     Volume:  21     ISSN:  0730-7268     ISO Abbreviation:  Environ. Toxicol. Chem.     Publication Date:  2002 Sep 
Date Detail:
Created Date:  2002-09-02     Completed Date:  2003-01-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8308958     Medline TA:  Environ Toxicol Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1788-95     Citation Subset:  IM    
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Haidian District, Beijing, China.
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MeSH Terms
Benzopyrans / chemistry
Biological Availability
Chelating Agents / chemistry
Copper / chemistry*,  toxicity*
Edetic Acid / chemistry
Environmental Monitoring
Hydrogen-Ion Concentration
Water Pollutants / toxicity*
Reg. No./Substance:
0/Benzopyrans; 0/Chelating Agents; 0/Water Pollutants; 479-66-3/fulvic acid; 60-00-4/Edetic Acid; 7440-50-8/Copper

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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