蔬菜中农药残留的变异性

Variability of Pesticide Residues in Vegetables

为给我国膳食摄入量评估提供技术支持,完善符合我国国情的评估体系,有必要研究蔬菜田间样本中农药残留的变异性。田间试验在蔬菜基地大棚中展开,调查番茄、黄瓜、辣椒和芹菜独立个体上的农药残留情况,用统计学方法评价各种蔬菜中的农药残留水平,按照JMPR推荐的原则,用Harrell-Davis方法计算变异因子,并对评估计算过程进行验证与讨论。通过计算,得到公式v=3.2×C0.0628mean,可以表述变异因子与农药残留平均值的关系,并由此得到变异因子的计算值为3.11。该值反映了蔬菜中农药残留的实际风险,与国际默认值3基本一致,证明中国蔬菜中农药残留的变异性和国际上没有太大区别。

It is necessary to study the variability of pesticide residues in vegetable samples from field trial in order to provide technical support for the assessment of dietary intake in China and improve the assessment system in line with China’ s national conditions.The field experiments were conducted in greenhouses of vegetable bases to investigate pesticide residues in tomatoes, cucumbers, peppers and celery. Statistical methods were used to evaluate pesticide residues in various vegetables. According to the principles recommended by JMPR, the Harrell-Davis method was used to calculate variation factors, and the evaluation process was validated and discussed. The relationship between variability factor and mean value of pesticide residue was expressed by the equation v=3.2×C 0.0628 mean , and the calculated value of variation factor was 3.11. This value reflected the actual risk of pesticide residues in vegetables, which was basically consistent with the international default value 3. It proved that the variability of pesticide residues in vegetables in China was not very different from that in the world.