Analysis of Exposure Pathways of Di(2-ethylhexyl)phthalate from the Environmental Emission Source to Humans
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概要
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According to the nationwide monitoring investigation, di(2-ethylhexyl)phthalate (DEHP), which is predominantly used as plasticizer in flexible polyvinyl chloride (PVC), has been detected in various environmental media and foodstuffs. It is known that a large amount of DEHP is emitted to the air during its manufacture of PVC products and their use, and that the major pathway to human intake is food. However, the process how DEHP emitted to the air reaches to humans has not been analyzed quantitatively. In this study, the transport processes of DEHP from the air to humans were investigated using mathematical models of air, soil, plants and cattle. The results showed that DEHP emitted to the air would transport to the aerial part of the plant (leaf, stem and fruit) by dry and wet depositions, furthermore a portion of DEHP would transport to cattle via forage crop. Moreover, DEHP would transport to and accumulate in the soil by the depositions from the air, and would be absorbed to plant roots, but hardly transport to aerial part. Our results suggest that the reduction of the emissions from the industries to the air is one of effective measures to reduce DEHP intake and human health risk.
- 社団法人 環境科学会の論文
社団法人 環境科学会 | 論文
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