兰坪县某铅锌矿周边主要蔬菜 水果重金属污染状况调查分析

Investigation of heavy metals in vegetables or fruits around the Pb-Zn mine of Lanping

目的:了解云南省怒江州兰坪县铅锌矿周边蔬菜、水果中铅、锌、铜、镉的含量及污染状况。方法:随机抽取当地种植的部分蔬菜,利用火焰原子吸收光谱法测定铅、锌、铜、镉的含量,并与国家标准GB14953—94、GB13106—91、GB15199—94、GB15201—94进行比较。结果:该铅锌矿周边种植蔬菜中铅、锌、铜、镉的含量大部分超过国家食品卫生标准,超标率分别为:51/77(66.23%)、20/77(25.97%)、0/77(0.00%)、24/77(31.17%)。结论:该铅锌矿周边蔬菜中铅、铜、镉污染较严重,应采取相应措施进行防治。

Objective：To study the amount of Pb,Zn,Cu and Cd in the vegetables or fruits and the pollution caused by them around the Pb-Zn mine of Lanping.Method：Randomly selecting samples from local vegetables and fruits,using atomic absorption spectrometer to determine the amount in the samples.Then compare with GB14953—94、GB13106—91、GB15199—94、GB15201—94.Results：The over-limit rate of Pb,Zn,Cu and Cd in the vegetables or fruits is 51/77（66.23%）、20/77（25.97%）、0/77（0.00%）、24/77（31.17%）than the contents of the national stander.Conclusion：the heavy metals pollution is very serious in the Pb-Zn Mine;so we must take necessary measures in order to reduce the pollution.