Exposure assessment for heavy metals in drinking water
There were no risk of nickel,hydrargyrum,lead for adults at this exposure of heavy metals in drinking water, and exposures of chromium,arsenic,zinc,ferrum, hydrargyrums were not acceptable for a small proportion of adults.
Abstract
Object:To direct exposure assessment of chemicals in drinking water,a exposure assessment of heavy metals was conducted in drinking water.Method:a probabilistic risk assessment for eight heavy metals(zinc,nickel,manganese ferrum,arsenic,hydrargyrum,lead,chromium)was conducted and dietary exposure model was established by @Risk 4.5.Results:The chronic daily intake(CDI)of nickel,hydrargyrum and lead were bigger than the corresponding acceptable daily intake(ADI)for all the adults.The proportion of the CDI was higher than that of the ADI,with the amount of chromium,arsenic,zinc,ferrum and hydrargyrum reaching 0.03%,0.17%,0.29%,0.37%,3.01% respectively.Conclusion:There were no risk of nickel,hydrargyrum,lead for adults at this exposure.Exposures of chromium,arsenic,zinc,ferrum,hydrargyrum were not acceptable for a small proportion of adults.