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当前位置: 首页 > 文章 > 菜薹(菜心)对土壤中重金属的富集特征及产地土壤安全临界值 中国蔬菜 2012,1 (12) 83-90
Position: Home > Articles > Heavy Metal Accumulation Characteristics and Environmental Critical Values in Flowering Cabbage〔Brassica campestris L.ssp.chinensis(L.)var.utilis Tsen et Lee〕Production Area for Food Security China Vegetables 2012,1 (12) 83-90

菜薹(菜心)对土壤中重金属的富集特征及产地土壤安全临界值

作  者：
文典;刘香香;王其枫;王富华;孙芳芳
单  位：
广东省农科院农产品质量安全与标准研究中心华中农业大学资源与环境学院农业部蔬菜水果质量监督检测测试中心;华中农业大学资源与环境学院;农业部蔬菜水果质量监督检验测试中心;广东省农业科学院农产品质量安全与标准研究中心农业部蔬菜水果质量监督检验测试中心(广州)深圳市环境科学研究院
关键词：
菜薹;原位土壤;重金属;富集;临界值
摘  要：
通过采集珠三角地区蔬菜产地原位土壤(非人工添加重金属)进行盆栽试验,研究了Cd、Pb、As、Hg、Cr5种重金属在种植菜薹土壤中的活性,菜薹可食部分对土壤中全量和有效态重金属的富集特征,并探讨了5种重金属在土壤产地环境中的安全临界值以及土壤理化性质对菜薹吸收重金属的影响。结果表明:种植菜薹的土壤中重金属的活性顺序为Cd>Pb>As>(Cr、Hg),菜薹对重金属的富集能力顺序为Cd>Cr>As>Pb。依据《食品中污染物限量》(GB2762-2005)进行方程拟合,得出适合菜薹种植土壤的重金属全量限量值分别是:Cd,1.18mg·kg-1;Pb,401.93mg·kg-1;As,25.67mg·kg-1;Cr,150.71mg·kg-1,有效态重金属限量值分别是:Cd,0.64mg·kg-1;As,3.05mg·kg-1;Cr,4.93mg·kg-1。菜薹对Hg富集能力弱,在供试土壤Hg浓度范围内菜薹中Hg含量均未超过限量值。
译  名：
Heavy Metal Accumulation Characteristics and Environmental Critical Values in Flowering Cabbage〔Brassica campestris L.ssp.chinensis(L.)var.utilis Tsen et Lee〕Production Area for Food Security
作  者：
WEN Dian1,2,LIU Xiang-xiang1,2,WANG Qi-feng1,2,WANG Fu-hua1,3*,SUN Fang-fang1,3(1Research Center for Agricultural Products Quality,Safety and Standard,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,Guangdong,China;2College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,Hubei,China;3Supervision and Testing Center for Vegetable and Fruit Quality,Ministry of Agriculture,Guangzhou 510640,Guangdong,China)
关键词：
Flowering cabbage〔Brassica campestris L.ssp.chinensis(L.)var.utilis Tsen et Lee〕;Soil in situ;Heavy metal;Enrichment;Critical values
摘  要：
Vegetable field soil in situ at the Pearl River delta was collected,and the pot experiment was conducted to study the activities of 5 heavy metals(Cd、Pb、As、Hg、Cr)in soil and the enrichment characteristics of total and available heavy metals in soil by the edible parts of flowering cabbage〔Brassica campestris L.ssp.chinensis(L.)var.utilis Tsen et Lee〕.The environment critical values of 5 heavy metals in flowering cabbage production area for food security,and the impact of soil physicochemical properties on heavy metal absorption in flowering cabbage were explored.The results show that the activity of soil heavy metals(ranked from the highest to the lowest)is Cd>Pb>As>(Cr、Hg),and the heavy metals concentration(ranked from the highest to the lowest)is Cd>Cr>As>Pb.Based on the national standards for maximum levels of heavy metal contaminants in foods(GB 2762-2005),the environmental critical values in the vegetable field were calculated as Cd 1.18 mg?kg-1,Pb 401.93 mg?kg-1,As 25.67 mg?kg-1,Cr 150.71 mg?kg-1,and the critical values of soil available heavy metal were calculated as Cd 0.64 mg?kg-1,As 3.05 mg?kg-1,Cr 4.93 mg?kg-1.The content of Hg in edible parts of flowering cabbage used in the experiment were lower than the criterion.

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