成都北郊蔬菜铅、镉和砷含量调查

A Content Survey of Lead,Cadmium and Arsenic in Seasonal Vegetables in North Suburb of Chengdu

目的了解成都北郊生产蔬菜铅、镉和砷含量。方法随机抽取成都北郊菜地5块,摘取时令蔬菜9种,用火焰原子吸收分光光度法测定铅、镉和砷含量。结果 9种蔬菜镉含量均正常,铅和砷含量均超过国家允许值,铅平均值为允许值的1.5倍,砷平均值达到国家允许值5.26倍。讨论成都北郊蔬菜砷污染严重。

Objective To investigate the content of lead, cadmium and arsenic in seasonal vegetables in north suburb of Chengdu. Methods Nine species of vegetables from five randomly selected fields in north suburb of Chengdu were determined with method of flame atomic absorption spectrophotometry. Results In all sample veg- etables, Cd was within permitted value ; Pb was 1.5 times of permitted value and Cr was 5.26 times. Conclu- sion Serious As pollution appeared in vegetables in north suburb of Chengdu.