2013—2014年广东省基地蔬菜重金属污染状况调查

目的了解广东省基地蔬菜中各类蔬菜重金属的污染状况及分布特点。方法 2013—2014年从广东省21个地市(4个地理区域:粤北、粤东、粤西、珠三角)的蔬菜种植基地采集8类615份蔬菜进行铅、镉、汞、砷的检测。结果广东省蔬菜中重金属污染以铅和镉为主,其中铅污染的主要蔬菜品种是叶菜类蔬菜,尤其是生菜;而镉污染的主要蔬菜品种是茄果类蔬菜,尤其是茄子。铅在广东省4个地区均有一定程度的污染,而镉含量较高的地区是粤北(韶关)和粤西(云浮)地区。结论广东省基地蔬菜中重金属污染程度总体较轻,需重点关注粤北和粤西地区的铅和镉的污染,加强对重点区域重点品种的监测。

Investigation of heavy metal contamination of vegetables from vegetable base of Guangdong Province from 2013 to 2014

To understand the levels and distribution characteristics of heavy metal contamination of vegetables from vegetable base of Guangdong Province.Methods The contamination of heavy metals including mercury(Hg), arsenic (As), lead (Pb), cadmium (Cd) was analyzed according to GB 2762-2012 in 615 vegetable samples from vegetable bases of 21 cities in Guangdong Province. Results The major heavy metal contamination of vegetables in vegetable bases of Guangdong were Pb and Cd. The main vegetable varieties polluted by lead was leafy vegetables, especially lettuce. The main vegetable varieties polluted by cadmium was solanum vegetables, especially eggplant. Vegetables from four areas of Guangdong Province were polluted by lead in different degree, while the highest content of cadmium in vegetables were found in the northern part of Guangdong (Shaoguan) and the western part of Guangdong (Yunfu).Conclusion Overall, the heavy metal contamination of vegetables in vegetable bases was weak. It needs to pay more attention to the lead and cadmium contamination of vegetables in the northern and western part of Guangdong.