文章基本信息

标题：Assessing sediment contamination using six toxicity assays
其他标题：Assessing sediment contamination using six toxicity assays
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作者：Allen G. BURTON Jr. ; Renato BAUDO ; Monica BELTRAMI 等
期刊名称：Journal of limnology
印刷版ISSN：1129-5767
电子版ISSN：1723-8633
出版年度：2001
卷号：60
期号：2
页码：263-267
DOI：10.4081/jlimnol.2001.1.263
出版社：Istituto italiano di idrobiologia
摘要：An evaluation of sediment toxicity at Lake Orta, Italy was conducted to compare a toxicity test battery of 6 assays and to evaluate the extent of sediment contamination at various sediment depths. Lake Orta received excessive loadings of copper and ammonia during the 1900’s until a large remediation effort was conducted in 1989-90 using lime addition. Since that time, the lake has shown signs of a steady recovery of biological communities. The study results showed acute toxicity still exists in sediments at a depth of 5 cm and greater. Assays that detected the highest levels of toxicity were two whole sediment exposures (7 d) using Hyalella azteca and Ceriodaphnia dubia. The MicrotoxR assay using pore water was the third most sensitive assay. The Thamnotox, Rototox, Microtox solid phase, and Seed Germination-Root Elongation (pore and solid phase) assays showed occasional to no toxicity. Based on similarity of responses and assay sensitivity, the two most useful assays were the C. dubia (or H. azteca) and Microtox pore water. These assays were effective at describing sediment toxicity in a weight-of-evidence approach.
关键词：bioassays; pore water; interstitial water