广西大厂矿区某屯玉米重金属污染评价 |
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引用本文: | 金枚,张新英,谢涛,吕晶晶,邱媛.广西大厂矿区某屯玉米重金属污染评价[J].安徽农业科学,2013,41(5):2225-2226. |
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作者姓名: | 金枚 张新英 谢涛 吕晶晶 邱媛 |
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作者单位: | 1. 广西师范学院资源与环境科学学院,广西南宁,530001 2. 广西壮族自治区分析测试中心,广西南宁,530001 3. 广西工业职业技术学院,广西南宁,530001 |
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基金项目: | 国家自然科学基金,广西科学基金,广西教育厅项目 |
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摘 要: | 目的]对广西大厂矿区某屯玉米重金属污染进行评价。方法]从广西大厂矿区某屯采集玉米样品及相应的土壤样品各10个,分析了其中的As、Pb、Cd、Zn、Cu等元素的含量,并对玉米安全性进行评价。结果]该屯10个玉米样品均受到了不同程度的重金属污染,5个样品为重污染,1个样品为中污染,4个样品为轻污染,主要超标元素是Pb和Zn。玉米对土壤中各元素的富集能力是不同的,富集系数排序为:Zn>Cu>Pb>Cd>As,说明玉米对砷和镉的富集能力较小。尽管该地区土壤中As、Cd污染很严重,但玉米中超标的主要是Zn和Pb,As和Cd反而不超标。结论]该研究为今后广西大厂矿区农产品的安全性管理提供了科学参考。
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关 键 词: | 大厂矿区 玉米 重金属 农产品安全 |
Assessment of Heavy Metal Contamination of Corn from Dachang Mining Area in Guangxi |
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Institution: | JIN Mei et al(College of Resources and Environmental Science,Guangxi Teachers Education University,Nanning,Guangxi 530001) |
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Abstract: | Objective] The study aims to assess heavy metal pollution of corn from Dachang mining area in Guangxi.Method]10 corn samples and 10 soil samples were collected from a village in Guangxi Dachang mining area,and pollutants including As,Pb,Cd,Zn and Cu were measured,finally the safety of corn was assessed.Result] 5 corn samples were heavily contaminated,1 samples was moderately contaminated,and 4 were lightly contaminated.The key pollutants in the corn were Pb and Zn.The corn showed different enrichment capability for the pollutants.The bioconcentration factors ranked Zn>Cu>Pb>Cd>As,which implies that the corn had a limited enrichment capability to Cd and As.Though the soil was polluted heavily by Cd and As,the key pollutants in corn were Zn and Pb.Conclusion] The research could provide scientific references for the safety management of agricultural products in Dachang minging area in Guangxi. |
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Keywords: | Dachang mining area Corn Heavy metals Safety of agricultural products |
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