S絮凝剂急性和亚慢性毒性研究

对原水处理剂Ｓ絮凝剂进行了大鼠急性毒性和９０ｄ喂养试验。Ｓ絮凝剂大鼠经口半数致死量雄性为８７１０ｍｇ／ｋｇ，Ｂ．Ｗ．，雌性为１０９６５ｍｇ／ｋｇＢ．Ｗ．，属实际无毒类物质。９０ｄ喂试验结果表明，剂量≥０．８％，时对大鼠生长发育，血液学、生化学及病理组织学等各项指标水见有不良影响，Ｓ絮凝剂最大无作用剂量为０．８％，相当于实际作用量的１０００倍。

Acute and Subchronic Toxicity of S Flocculant

An acute toxicity test and 90 days feeding test of S flocculant in rats were performed. It was illustrated that the LD50 (preoral) was 8710 mg/kg B. W. in male rats and 10965 mg/kg B. W. in female rats respectively, being classified as a non-toxic substance in fact. In the 90 days feeding test in rats, at and above the dose level of 0. 8 %, no adverse effects were observed on the growth and development of rats in haemotological, biochemical and histopathological examinations. Acording to our study, the maximum non-effect level was 0. 8%, 10000 times as much as the using dose of practice.