关键词: 蔬菜；农药残留；摄入；风险评估；毒死蜱；处理作物百分比

Abstract:

Based on the regulatory monitoring data of chlorpyrifos in vegetables sampled at random from markets and production bases in Beijing, and the consumption data of vegetables and body weight of different population collected in the China nationwide food consumption survey, the chronic dietary risk for children (7 years of age) and adult (30 years of age) populations were evaluated. In order to make the evaluation results conform to the reality, percentcroptreated (PCT) data were used. The result showed that the daily exposure of chlorpyrifos from vegetables for children is greater than that of adult group. The boy figure is about double to that of man；and girls is 1.78 to that of woman. Girls are the most sensitive population. The chronic assessment risk of adult man is acceptable. The rest populations are potentially risky. Great concern should be paid on them, especially children who takes the highest risky. The conclusion of risk assessment by percent (POR) was consistent with that by margin of exposure (MOE). It is feasible to use percentcroptreated data in risk evaluation. In order to reduce the residues of chlorpyrifos in vegetables, improving measures and surrogate pesticides should be taken in the course of vegetable production.

Key words: vegetable, pesticide residue, dietary intake, risk assessment, chlorpyrifos, percent crop treated