Document Detail


Predicting criteria continuous concentrations of 34 metals or metalloids by use of quantitative ion character-activity relationships-species sensitivity distributions (QICAR-SSD) model.
MedLine Citation:
PMID:  24553246     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Criteria continuous concentrations (CCCs) are useful for describing chronic exposure to pollutants and setting water quality standards to protect aquatic life. However, because of financial, practical, or ethical restrictions on toxicity testing, few data are available to derive CCCs. In this study, CCCs for 34 metals or metalloids were derived using quantitative ion character-activity relationships-species sensitivity distributions (QICAR-SSD) and the final acute-chronic ratio (FACR) method. The results showed that chronic toxic potencies were correlated with several physico-chemical properties among eight species chosen, where the softness index was the most predictive characteristic. Predicted CCCs for most of the metals, except for Lead and Iron, were within a range of 10-fold of values recommended by the U.S. EPA. The QICAR-SSD model was superior to the FACR method for prediction of data-poor metals. This would have significance for predicting toxic potencies and criteria thresholds of more metals or metalloids.
Authors:
Yunsong Mu; Fengchang Wu; Cheng Chen; Yuedan Liu; Xiaoli Zhao; Haiqing Liao; John P Giesy
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-2-16
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  188C     ISSN:  1873-6424     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2014 Feb 
Date Detail:
Created Date:  2014-2-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  -    
Other Details:
Languages:  ENG     Pagination:  50-55     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Elsevier Ltd. All rights reserved.
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