荆州市蔬菜重金属和砷污染现状及影响因素

Current States and Affecting Factors of Heavy Metal and As Pollution to Vegetables in Jingzhou City

经过取样分析 ,对荆州市郊区蔬菜基地易受重金属和砷污染的芹菜和菠菜的污染状况进行了研究。结果表明 ,大棚和露天芹菜、菠菜都存在轻度砷污染 ;露天芹菜、菠菜存在铅污染 ,而大棚芹菜无铅污染 ;大棚芹菜和露天芹菜、菠菜都不存在镉、铬、汞污染。污染和土壤、肥料、灌溉水及空气有关。

Through taking samples for analysis, the pollution conditions of celery and spinach, which are vulnerable to heavy matal and As pollution, were studied in Jingzhou suburban vegetable bases. The results showed that the big-shed or open-air celery and spinach were all polluted lightly by As; the open-air celery and spinach were both polluted by Pb,but the big-shed celery was not; neither the big-shed celery nor the open-air celery or spinach were polluted by Cd,Cr and Hg. The pollutions were related to soil,fertilizer, irrigation water and air.