Calculation method for risk control value of arsenic in soil and application thereof
A technology of risk control and calculation method, applied in the field of risk assessment of contaminated sites, to achieve the effect of scientific and reasonable risk control value, avoiding excessive restoration and economic waste
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Embodiment 1
[0071] The concentration limit of arsenic in my country's existing "Drinking Water Quality Standards" (GB5749-2006) is 10 μg / L, and the concentration limit of arsenic in "Ambient Air Quality Standards" (GB 3095-2012) is 0.006 μg / m 3 . 10μg / L and 0.006μg / m respectively 3 As the exposure concentration of arsenic in drinking water and ambient air, the oral intake route of arsenic is calculated based on the parameters recommended in the first category of land use scenarios in the "Technical Guidelines for Soil Pollution Risk Assessment of Construction Land" (HJ25.3-2019) The equivalent doses of the carcinogenic effects of the skin contact route and the respiratory inhalation route are 0.0766 μg / kg / d, 0.0766 μg / kg / d, and 0.000618 μg / kg / d, respectively, and the oral intake is reversed based on the equivalent dose The soil arsenic risk control values of the route, skin contact route, and inhalation route were 59.91 mg / kg, 624.42 mg / kg, and 92.66 mg / kg respectively, and the final s...
Embodiment 2
[0097] The difference from Example 1 is that based on the population exposure parameters of a certain city in the north, some human exposure parameters are determined in combination with the population exposure characteristics at that time, and the calculated equivalent doses of carcinogenic effects of arsenic through oral intake, skin contact, and respiratory inhalation They are 0.13μg / kg / d, 0.13μg / kg / d, and 0.00063μg / kg / d, respectively. Based on the equivalent dose, the risk control value of soil arsenic by oral intake, skin contact, and respiratory inhalation is reversed. They were 163.64mg / kg, 1263.05mg / kg, and 139.68mg / kg respectively, and the final soil total risk control value based on the equivalent dose was 71.11mg / kg.
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