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作 者 ：蔡保松,陈同斌,廖晓勇,谢华,肖细元,雷梅,张国平

期 刊 ：生态学报 2004年 24卷 4期 页码：711~717

关键词：砷；蔬菜；污染；安全；土壤；

Keywords:arsenic, vegetable, pollution, safety, soil,

摘 要 ：对湖南郴州砷污染区的土壤和蔬菜砷含量进行了研究 ,结果表明该地区土壤含砷量为 19.5～ 2 37.2 mg/ kg、平均为 6 3.9mg/ kg、中值为 4 7.8mg/ kg,比全国平均土壤含砷量 (9.2 m g/ kg)高 2～ 2 5倍 ;蔬菜可食部分砷含量范围为 0 .0 4～ 2 .6 4 m g/ kg、平均为 0 .74 mg/ kg、中值为 0 .5 4 mg/ kg,5 4 %的蔬菜可食部分含砷量超过了《蔬菜卫生标准》规定的最大允许量 (MPC≥ 0 .5mg/ kg) ;菠菜 ,茼蒿和生菜可食部分超标比较严重 ,最大砷含量超出 MPC 5倍左右。

Abstract:Contamination of soils by arsenic (As) results from mining, smelting of sulfide ores, pesticides, timber preservation and As-rich groundwaters. Arsenic contaminated soils, sediments and sludges are major sources of contamination in the food chains and water supplies. The uptake of arsenic (As) by vegetables from contaminated soils presents a health hazard that may affect the use of agricultural land. Contamination of foods by As remains a possible danger under long time consumer.Within the Hunan Province, G...

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