The use of biomarkers in Daphnia magna magna toxicity testing. II. digestive enzyme activity in Daphnia magna Exposed To sublethal concentrations of cadmium, chromium and mercury

W.M.de Coen; C.R.Janssen

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The use of biomarkers in Daphnia magna magna toxicity testing. II. digestive enzyme activity in Daphnia magna Exposed To sublethal concentrations of cadmium, chromium and mercury

机译：在大水蚤的毒性测试中使用生物标志物。二。亚致死浓度的镉，铬和汞暴露于大型蚤中的消化酶活性

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The effect of 48h and 96h exposure to sublethal concentrations of CdCl_2, HgCl_2 and K_2Cr_2O_7 on the digestive enzyme activity of Daphnia magna was assessed. Five different digestive enzymes were investigated: cellulase, amylase, β-galactosidase, trypsin and esterase. Both inhibition (CdCl_2 and HgCl_2) and increase (K_2Cr_2O_7) of the enzyme activities were noted after short-term (48h) exposure. No inhibition, however, was observed after prolonged exposure (96h) to HgCl_2 and K_2Cr_2O_7 and even an increase in activity was noted for CdCl_2.

机译：评估了48h和96h暴露于亚致死浓度的CdCl_2，HgCl_2和K_2Cr_2O_7对大型水蚤的消化酶活性的影响。研究了五种不同的消化酶：纤维素酶，淀粉酶，β-半乳糖苷酶，胰蛋白酶和酯酶。短期（48h）暴露后，酶活性均受到抑制（CdCl_2和HgCl_2）和增加（K_2Cr_2O_7）。然而，在长时间（96h）暴露于HgCl_2和K_2Cr_2O_7后未观察到抑制作用，甚至发现CdCl_2的活性增加。

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《Chemosphere》 |1997年第5期|p.1053-1067|共15页
作者
W.M.de Coen; C.R.Janssen;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类大气污染及其防治;
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The use of biomarkers in Daphnia magna magna toxicity testing. II. digestive enzyme activity in Daphnia magna Exposed To sublethal concentrations of cadmium, chromium and mercury

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