Abstract
Lately, human health risks of chemicals are assessed in Japan. However, due to limited information regarding hazard and exposure for a large number of chemicals, only a limited number of them have been assessed to date. Existing exposure assessment procedure based on monitoring data is not applicable to many chemicals. We, therefore, developed a mathematical modeling approach to estimate site-specific concentrations of hydrophobic and low volatile chemicals in respective agricultural and livestock products based on uniquely-derived concentration correction factors and geographic information system analysis. The estimated site-specific concentrations of Di (2-ethylhexyl) phthalate (DEHP) in 3 types of agricultural products and 3 types of livestock products were in good agreement with those measured within a factor of 8. These results suggested that the developed modeling approach is applicable for estimating site-specific concentrations of hydrophobic chemicals in respective agricultural and livestock products appropriately.
