Marine water quality criteria for cadmium with a view to protecting aquatic life in China and ecological risk assessment

MU Jingli; WANG Ying; ZHANG Zhifeng; WANG Juying

doi:10.3969/j.issn.0253-4193.2013.03.016

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MU Jingli, WANG Ying, ZHANG Zhifeng, WANG Juying. Marine water quality criteria for cadmium with a view to protecting aquatic life in China and ecological risk assessment[J]. Haiyang Xuebao, 2013, 35(3): 137-146. doi: 10.3969/j.issn.0253-4193.2013.03.016

Citation:

MU Jingli, WANG Ying, ZHANG Zhifeng, WANG Juying. Marine water quality criteria for cadmium with a view to protecting aquatic life in China and ecological risk assessment[J]. Haiyang Xuebao, 2013, 35(3): 137-146. doi: 10.3969/j.issn.0253-4193.2013.03.016

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Marine water quality criteria for cadmium with a view to protecting aquatic life in China and ecological risk assessment

doi: 10.3969/j.issn.0253-4193.2013.03.016

Key Laboratory for Ecological Environment in Coastal Areas, State Oceanic Administration, Dalian 116023, China;Division of Marine Chemistry, National Marine Environmental Monitoring Center, Dalian 116023, China

Received Date: 2012-07-25
Rev Recd Date: 2012-11-14

Abstract

Abstract

The cadmium toxicity data of indigenous marine species were collected and screened on the basis of analyzing the characteristics of marine biota in China.Marine water quality criteria (WQC) of Cd were then derived using the species sensitivity distribution (SSD) approach with different regression models.The results indicated that the Burr Ⅲ model was better for fitting the SSD than the other four models, log-logistic, log-normal, Gumbel and Weibull.The acute and chronic marine WQC derived with Burr Ⅲ model were 63.0 μg/L and 8.0 μg/L, respectively.The feasibility of incorporating freshwater toxicity data to derive the Cd WQC was explored.It was shown that this kind of introduction derived a rather conservative marine WQC f and thus led to an "over-protection" for marine organisms.The ecological risk of Cd was preliminarily evaluated by comparing the chronic WQC value with measured ambient waterborne Cd concentrations.It was found that there existed a low ecological risk to marine biota in China coastal waters.
- water quality criteria,
- Cadmium,
- species sensitivity distribution,
- risk assessment

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References(23)

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