桂林理工大学学报2017，Vol.37Issue(2)：348-353,6.DOI:10.3969/j.issn.1674-9057.2017.02.017
应用BLM研究Cd对大型溞的急性毒性
Study of BLM on the acute toxicity of Cd to Daphnia Magna
摘要
Abstract
Biotic ligand model can be used to predict bioavailability and toxicity of heavy metals.In order to examine the toxic effect of Cd to Daphnia magna based on water quality parameters(Ca2+,Mg2+,Na +,K +,pH),uniform design method was introduced to optimize the combination of different levels of water quality parameters.The results showed that LC50 of Cd to Daphnia magna in seven different uniform design groups existed difference significantly and LC5o is in the range of 352.46μg · L-1to 10 626.59μg · L-1.Ca2+,Mg2+ and pH have strong inhibition effect for the toxicity.After LA50 (lethal accumulation occurring 50％ toxic effect) of Cd on Daphnia magna was obtained by combining toxic results with biotic ligand model (BLM),stability constant of Cd,Ca,Mg,Na and H combined by biotic ligand was calculated.lg KBL-cd is in the range of 8.34-8.47 L · mol-1.The ratio of predicted LC50 by BLM to experimental LC50 is in the range of 1.04-1.27 and in good agreement.关键词
镉/大型溞/急性毒性/生物配体模型/平衡常数Key words
cadmium/Daphnia magna/acute toxicity/biotic ligand model/stability constant分类
资源环境引用本文复制引用
王飞飞,朱岩,张亚辉,曹莹,曾鸿鹄..应用BLM研究Cd对大型溞的急性毒性[J].桂林理工大学学报,2017,37(2):348-353,6.基金项目
国家自然科学基金项目(21407139 （）
51268008) （）
