Using Health Risk Assessment to Evaluate Irrigation Water Quality Standard
Date Issued
2004
Date
2004
Author(s)
Wang, Li-Ying
DOI
zh-TW
Abstract
Traditionally, the irrigation water quality standard was established for the health and safety of crops. However, heavy metals may accumulate in the farmland then enter the food chain by the absorption of the crop and cause harm to human health. This study evaluates the current irrigation water quality standard in the view point of human health risk assessment. There are three hypothetical exposure scenarios in the study and a case study is analyzed. The three exposure scenarios are resident, resident in contaminated region, farmer in contaminated region, respectively. The result shows that As has exceed the acceptable risk in all three exposure scenarios, therefore the irrigation water quality standard must be reviewed and the standard of the As should be more strictly. The case study results coincided with the blood and urine test in Chang-Hwa area which suggests that human health risk assessment should be considered as to establish all kinds of standards.
Subjects
健康風險評估
灌溉用水水質標準
重金屬
health risk assessment
irrigation water quality standard
heavy metal
SDGs
Type
thesis