朱英;胡双庆;沈根祥;张洪昌;杨灿;

• 1:上海市环境科学研究院
• 2:华东理工大学

摘要(Abstract)：

家用消毒剂大量用于日常生活中,进入水体环境后对水生生物产生潜在危害效应,目前尚缺乏保护水生生物安全的生态效应阈值。本研究以2种典型家用消毒剂(有效成分分别为对氯间二甲苯酚和次氯酸钠,前者命名为消毒剂A、后者为消毒剂B)为研究对象,开展其对8种不同营养级淡水水生生物的急性毒性效应研究。结果表明,除底栖动物外,消毒剂B对藻类、溞类和鱼类的急性毒性均高于消毒剂A;我国本土种稀有鮈鲫对2种消毒剂的敏感性高于其他2种鱼类;2种消毒剂对藻类的毒性高低均为近头状伪蹄形藻>斜生栅藻>蛋白核小球藻;近头状伪蹄形藻对2种消毒剂最敏感。基于上述毒性数据构建了物种敏感分布(SSD)曲线,计算对保护95%的物种不受影响时所对应的污染物浓度(HC5),并结合评估因子法推导出2种消毒剂预测无效应浓度(PNEC)值作为急性生态效应阈值,消毒剂A和消毒剂B的PNEC值分别为13.16 mg·L~(-1)(有效成分对氯间二甲苯酚PNEC值为0.33 mg·L~(-1))和0.71 mg·L~(-1)(有效成分次氯酸钠PNEC值为0.01 mg·L~(-1)),消毒剂A对淡水生物的PNEC比消毒剂B大了一个数量级,表明相较于消毒剂B,消毒剂A对水生态环境更为友好。本研究结果可为制订典型家用消毒剂的水质基准提供科学依据。

关键词(KeyWords)： 家用消毒剂;对氯间二甲苯酚;次氯酸钠;淡水水生生物;毒性效应;物种敏感度分布;急性生态效应阈值

Abstract:

Keywords:

基金项目(Foundation): 上海市环境科学研究院科技创新基金(CX201605)

作者(Author): 朱英;胡双庆;沈根祥;张洪昌;杨灿;

Email:

DOI:

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