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The present study was conducted to investigate the effect of polyaspartic acid (PASP) on Pb, Cu, and Cd toxicity in zebrafish (Danio rerio). After 24 hours’ toxicity test on zebrafish, LC50, survival rates of zebrafish and catalase (CAT) activity were determined. The results revealed that the 24-hour survival rates of zebrafish exposed to Pb (P?.05), Cd (P?.05), and Cu (P?.05) treatment decreased with the increasing metal concentration; and the mean LC50 of Pb, Cd, and Cu for zebrafish were 5.15?mg/L, 2.82?mg/L, and 0.09?mg/L, respectively. However, no zebrafish death was found in the group added with PASP (P?.05), indicating that the application of PASP increased the survival rate and alleviated the toxicity of heavy metal in zebrafish. The mechanisms of detoxification induced by PASP might lie in the in vitro and in vivo mechanisms. 相似文献
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通过对国内典型铬渣处理的项目进行分析,并结合某铬渣污染治理工程实例,从反应机理、解毒工艺、工艺适应性、资源回收利用、设备选型、处理规模、场址选择、污染控制及安全生产和经济性方面对铬渣湿法解毒和干法解毒技术在实际应用中的选择进行对比,为该项目提出了更适合的解毒技术。 相似文献