摘要
以粤东潮州市彩塘不锈钢电镀区小流域为例,分析了电镀废水、电镀废水污染河流水以及电镀污水灌溉区的农田土壤和农作物的重金属累积状况。结果表明:电镀废水污染河流水的Pb、Zn、Cd、Cu、Cr、Cr、Ni含量分别为0.94、1.76、0.03、1.78、0.36、0.27、0.21mg/L,均超过了地表水环境质量Ⅲ类标准。采用该河流水进行灌溉后,耕地土壤重金属含量增加,除Cd以外,其他重金属含量均未超过二类土壤环境质量标准,但土壤重金属生物有效性增加;电镀废水灌溉区种植的农作物积累的Pb、Cd、Ni分别超过了食品卫生标准的11.2~16.7倍、0~3.6倍、11.2~16.7倍。
Distribution characteristics of heavy metals pollution of electroplating waste water, agricultural soil and crops were investigated in Caitang town,Chao Zhou city, Guangdong province. The results shoued that Pb, Zn, Cd, Cu, Cr, Ni concentrations in surface water were 0.94, 1.76, 0.03, 1.78, 0.36, 0.27 mg/L and 0.21 mg/L, respectively, which were all more than III class of surface water environmental quality standard. The contents of heavy metals increased with long periods of irrigation by surface water, while the concentrations of heavy metals except Cd were lower than Ⅱ class of soil environmental quality standard. Pb, Cd and Ni concentrations were 11.2-16.7, 0-3.6 and 11.2-16.7 times more than food hygiene standards, respectively.
出处
《广东农业科学》
CAS
CSCD
北大核心
2009年第11期144-146,共3页
Guangdong Agricultural Sciences
基金
韩山师范学院博士启动基金项目
环境地球化学国家重点实验室开放课题
关键词
电镀废水
重金属污染
灌溉
electroplating water
heavy metals pollution
irrigation