Advances in aquatic biotoxicity testing for sediment evaluation
Various evaluation methods have been developed for the risk assessment of sediment contamination,involving effect-directed analysis(EDA)for biological toxicity testing,sediment toxicity identification evaluation(TIE),weight-of-evidence(WOE),species sensitivity distribution(SSD),sediment quality benchmark(SQG),etc.These methods have been widely applied in toxic effects characterization of contaminants in river and lake sediments as well as in sediment quality evaluation.Aquatic biotoxicity test plays an important role in the above mentioned evaluation methods.In this review,methodology of aquatic biotoxicity testing in different studies were summarized,including treatment of testing substrates,selection of test organisms,and the test endpoints.3 types of testing substrates were introduced,which were directly use of contaminated sediment,clean sediment spiking,and artificial sediment.4 groups of widely used tested organisms,phytoplankton,zooplankton,benthic animals and fish,were elaborated.And 2 kinds of test endpoints,acute toxicity endpoints and chronic toxicity endpoints were summarized.Moreover,some problems of aquatic biotoxicity testing,and future development of sediment quality evaluation were discussed,hope to provide some reference in the standard methods establishment for sediment biotoxicity testing in China.
万方数据
维普
