家庭冲厕用水毒理学的选择性计算

Toxicology calculation of household flushing water

文章从管理毒理学的角度入手,计算不同品质的用水在冲厕使用中的重金属、有机化合物对人体健康的危害。其中重金属选择As、Cd、Cr、Pb,计算选取3L/S、6L/S、8L/S三种水校的坐便器为计算对象,分别计算了经口、呼吸两种接触途径在不同化学品含量的冲厕用水使用时的致癌危险度。呼吸途径时,冲厕用水中砷含量为1 mg/L时,使用6L/S、8L/S水校的坐便器时的致癌危险度大于10-4;冲厕用水中镉含量为0.1 mg/L时,使用6L/S、8L/S水校的坐便器时的致癌危险度大于10-4;冲厕用水中六价铬含量为0.01 mg/和0.1 mg/L时,使用6L/S、8L/S水校的坐便器时的致癌危险度大于10-4。经口途径时各浓度水平的危险度计算都小于10-4。

This article from the perspective of toxicology calculates the harm to human health by oral and respiratory contact routes caused by heavy metals As,Cd,Cr,and Pb and organic compounds in different qualities of water used in toilet flushing where the toilets of 3 L/S,6 L/S,and 8 L/S were used.In the respiratory intake route,carcinogenic risk is greater than 10-4 when in flushing water of 6 L/S and 8 L/S toilets,arsenic content is lmg/L,cadmium content is 0.1 mg/L,or hexavalent chromium content is 0.01mg/L and 0.1mg/L.The risk is less than 10-4 for each concentration level of heavy metals by the oral route.