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| Research on the Health Risk Assessment Exposure Factors of Rural Residents′ Drinking Water in the Western Edge of the Sichuan Basin, China |
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| KeyWord:exposure factor; daily drinking water intake rate; skin surface area; body weight; Mingshan County |
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| Abstract: |
| Using random sampling method, this study investigated the drinking water exposure characteristics of rural residents in the western edge of the Sichuan Basin, and got 1240 investigators′ information. Three groups including male, female and all subjects would be divided to analyze with SPSS17.0 software. The results showed that：age and sex could influence exposure parameters. For children, adult males, adult females and all the investigators, average body weight of these groups were 30 kg, 64 kg, 56 kg, 57.6 kg respectively; average daily drinking water intake rate were 1.25 L·d-1, 2.13 L·d-1, 1.92 L·d-1, 1.88 L·d-1 respectively; and average skin surface area were 1 m2, 1.72 m2, 1.57 m2, 1.6 m2 respectively. These three exposure parameters increased with age at first, and reached up to the maximum at the age of 46~60, then gradually decreased. Compared with the residents of US, Australia and Canada, the mean of body weight for male and female in the study area were below 23%~25%, 12%~20.8%, respectively, and average skin surface area were below12.8%~16.3%、7.6%~8.3%, respectively. Average daily drinking water intake rate for male and female were lower northern residents of China 37.7%、38.5%, respectively. Therefore, it′s an urgent need for building regional residents exposure factors database in order to reduce uncertainty of health risk assessment. |
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