铬(Ⅵ)和菲单一及复合暴露对赤子爱胜蚓的急性毒性效应研究

崔春燕; 沈根祥; 胡双庆; 顾海蓉; 张洪昌; 蔡翔

文章摘要

崔春燕,沈根祥,胡双庆,顾海蓉,张洪昌,蔡翔.铬(Ⅵ)和菲单一及复合暴露对赤子爱胜蚓的急性毒性效应研究[J].农业环境科学学报,2015,34(11):2070-2075.

铬(Ⅵ)和菲单一及复合暴露对赤子爱胜蚓的急性毒性效应研究

Acute Toxicity of Single and Co-Exposure of Chromium(Ⅵ) and Phenanthrene to Eisenia Foetida

投稿时间：2015-06-02

DOI：10.11654/jaes.2015.11.005

中文关键词: 铬菲复合暴露蚯蚓急性毒性

英文关键词: chromium phenanthrene co-exposure earthworms acute toxicity

基金项目:上海市2014年度"科技创新行动计划"社会发展领域项目(14231200500)

作者	单位	E-mail
崔春燕	东华大学环境科学与工程学院, 上海 201620
沈根祥	上海市环境科学研究院, 上海 200233	shengx@saes.sh.cn
胡双庆	上海市环境科学研究院, 上海 200233
顾海蓉	上海市环境科学研究院, 上海 200233
张洪昌	上海市环境科学研究院, 上海 200233
蔡翔	上海市环境科学研究院, 上海 200233

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中文摘要:

采用人工土壤试验方法,研究了重金属铬(Ⅵ)和多环芳烃菲单一及复合暴露对赤子爱胜蚓的急性毒性效应.单一暴露试验结果表明:铬(Ⅵ)对赤子爱胜蚓7 d和14 d的LC₅₀分别为259.98 mg·kg^-1和241.13 mg·kg^-1;菲对赤子爱胜蚓7 d和14 d的LC₅₀分别为88.01 mg·kg^-1和60.96 mg·kg^-1.铬(Ⅵ)和菲对赤子爱胜蚓都表现出明显的时间-浓度-效应关系,而且铬(Ⅵ)和菲对赤子爱胜蚓均具有一定毒性,菲的毒性大于铬(Ⅵ).采用铬(Ⅵ)和菲等毒性单位进行复合暴露试验,结果表明铬(Ⅵ)和菲混合物对蚯蚓7 d-LC₅₀中铬(Ⅵ)和菲所含浓度分别为151.73 mg·kg^-1和37.93 mg·kg^-1;14 d-LC₅₀中铬(Ⅵ)和菲所含浓度分别为 137.69 mg·kg^-1和34.42 mg·kg^-1,根据等效应线图判定其联合作用表现为相加作用.

英文摘要:

In recent years,there has been serious combined pollution of heavy metals and PAHs in soils,causing widespread concerns. The acute toxicity effects of single and co-exposure of chromium(Ⅵ) and phenanthrene on Eisenia foetida were examined with artificial soil test using standard OECD 207. The single exposure test showed that 7 d-LC₅₀ and 14 d-LC₅₀ values of chromium(Ⅵ) to Eisenia foetida were 259.98 mg·kg^-1 and 241.13 mg·kg^-1, respectively, and those of phenanthrene were 88.01 mg·kg^-1 and 60.96 mg·kg^-1, correspondingly. The earthworm mortality was obviously related with time and concentrations of the chemical exposure. Phenanthrene had greater toxicity to Eisenia foetida than chromium(Ⅵ) did. The joint acute toxicity of chromium(Ⅵ) and phenanthrene examined under toxic equivalent ratio indicated that the 7 d-LC₅₀ values in the mixture were 151.73 mg·kg^-1 and 37.93 mg·kg^-1, and the 14 d-LC₅₀ 137.69 mg·kg^-1 and 34.42 mg·kg^-1, for chromium(Ⅵ) and phenanthrene, respectively. The joint effect of chromium(Ⅵ) and phenanthrene on Eisenia foetida was additional joint action based on the isobologram of exposure concentrations and time of chromium(Ⅵ) and phenanthrene.

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