Toxicity of the Lixivium of the Sediment from 6 Streams of Guangzhou to Aquatic Organisms
广州城市河涌沉积物浸出液对水生生物的急性毒性

The acute toxicity of the lixivium of the sediments from 6 streams,including Shijing, Aokouyong, shaheyong, Donglangyong, Chebeiyong and Huadiyong to Chlorella pyrrenoidosa, Daphnia magna and Brachydanio Rerio were assessed. Results indicated that the lixivium of the sediments from the 6 streams displayed different toxicities to aquatic organisms. Among 6 streams, the toxicity of the lixivium from Shijing and Aokouyong streams were stronger than others. In the bioassay of the sediment from different streams with various level organisms,Chlorella pyrrenoidosa exhibited the most sensitivity to lixivium of the sediment and Daphnia magna was the least.