过氧乙酸消毒剂的毒性试验

目的：对一元包装过氧乙酸消毒剂的急性和亚急性毒性进行研究，为其安全使用提供依据。方法依据卫生部《消毒技术规范》（2002年版）进行试验：（1）急性毒性试验：选用健康Wistar大鼠60只，随机分组，一次性经口灌胃不同剂量消毒剂，观察大鼠的中毒症状和死亡情况，计算半数致死量（LD50）。（2）亚急性毒性试验：选用健康Wistar大鼠40只，随机分为3个剂量组和阴性对照组，连续经口灌胃（33～342）mg/kg体重消毒剂28d，试验结束后检测大鼠体重、脏/体比值、血液学指标及血清生化指标，并进行病理组织学检查。结果对雌性、雄性大鼠LD50分别为1470mg/kg体重、1710mg/kg体重；大鼠亚急性试验各剂量组体重、血液学指标、生化指标、脏/体比值，与阴性对照组比较，统计学上均差异无显著性；大体解剖观察未见异常，未见与受试物有关的病理组织学改变。结论该过氧乙酸消毒剂对大鼠急性经口毒性为低毒级，且在本试验剂量范围内，未观察到明显的亚急性经口毒性。

Evaluation of the toxicity of a unitary package peracetic acid disinfectant in rats

Objective To evaluate the use safety of a unitary package peracetic acid (PAA) disinfectant through acute and subacute toxicity experiments in rats. Methods This study was conducted according to the Technical Standard For disinfection (Version 2002). In the acute toxicity experiment, 60 healthy Wistar rats were randomly divided into different groups of PAA given by single intragastric gavage. Symptoms of poisoning of the animals were observed to calculate the half lethal dose (LD₅₀).In the subacute toxicity experiment, 40 healthy Wistar rats were randomly divided into three dose groups and negative control group. The rats were given 33-342 mg/kg BW PAA for 28 days. At the end of test, the body weight, the organ-to-body weight ratio and the hematological and biochemical indices were determined, and pathological examination was performed. Results The acute oral LD₅₀ of female rats was 1470 mg/kg BW, and the LD₅₀ of male rats was 1710 mg/kg bw. The results of subacute toxicity test showed that the body weight, the organ-to-body weight ratio and the hematological and biochemical indices had no significant difference between the dose groups and control group. No obvious abnormality was observed in gross anatomy and histopathological examination. Conclusions The results of the acute toxicity test prove that PAA has a low toxicity level, and no significant subacute toxicity was observed at the exposure doses.