Survey on Environmental Lead Pollution in Rural Areas around Lead-zinc Mining Area in Guangxi,2008 / 环境与健康杂志

ABSTRACT

Objective To know the environmental lead pollution status of rural areas around the mining area in Guangxi,2008.Methods From August to December,2008,the survey was carried out in 28 villages of 4 counties,which were located in basin of three rivers and their tributaries.Six lead-zinc-tin mines were situated in the investigated area.The local samples were collected,including 101 rice samples,30 paddy samples,59 vegetable samples and 45 samples of meat,viscera of poultry,5 fish samples,and 27 surface water samples,12 ground water samples,13 drinking water samples,29 cropland soil samples.The lead content of them were determined,the dietary survey on lead intake was performed among the residents living near the mining area also.Results 53.68%(102/190) of the crop samples revealed higher lead contents,which were over the standard limit,especially for rice(47.52%) and leafy vegetables(100%).The lead contents for five eggs samples,two peanuts samples and thirteen fresh corns were qualified.36%(102/190)of the samples of meat and viscera of poultry revealed higher lead contents,which were over the standard limit,especially for liver and chicken intestine.The lead intake only through rice and vegetables reached 4.55 mg in one week,which was over the tolerance dose by 0.52 times.Conclusion The lead intake of the residents living near the lead-zinc mining area are mainly from crop and vegetables and poultry.Environmental lead pollution is serious in the investigated area and must be controlled as possible as early.