铁皮石斛产地环境及产品中重金属的监测与污染评价  

Monitoring and evaluation for heavy metals of Dendrobium officinale Kimura et Migo and its origin environment

作　　者：徐丽红[1] 郑蔚然[1] 王小骊[1] 宋仙水 吴文彪 吴呈勇 

机构地区：[1]浙江省农业科学院农产品质量标准研究所,浙江杭州310021 [2]浙江铁枫堂科技股份有限公司,浙江乐清325600 [3]乐清市大荆镇农业综合服务中心,浙江乐清325600 [4]乐清市灵岩铁皮石斛合作社,浙江乐清325600

出　　处：《浙江农业学报》2015年第3期429-433,共5页Acta Agriculturae Zhejiangensis

基　　金：浙江省农业科学院院地科技合作项目(WZ20130006)

摘　　要：抽取浙江省乐清市大荆镇、淡溪镇、虹桥镇、仙溪镇、雁荡镇和芙蓉镇等地人工栽培铁皮石斛样品34份、基质样品27份和水样16份,分别检测其中Pb,Cd,Cu,Hg的含量。采用单因子综合污染指数和Nemerow污染指数法对铁皮石斛鲜条及铁皮枫斗进行污染评价。结果表明:铁皮石斛鲜条和枫斗的单因子综合污染指数和Nemerow污染指数均小于0.6,铁皮石斛产品均未受到重金属污染,水样总体表现良好,未受到Pb,As,Cd,Hg的污染。基质重金属Cd单因子综合污染指数为1.33,1.0<P综≤2.0,轻度污染;Nemerow污染指数为0.97,0.7<P综≤1.0,达警戒线,说明基质尚清洁,具备发展无公害铁皮石斛的环境条件,但应严格控制基质中重金属Cd的含量。Thirty-four artificially cultivated Dendrobium officinale Kimura et Migo samples,27 matrix samples and 16 water samples were collected from 6 towns of Yueqing including Dajing,Danxi,Hongqiao,Xianxi,Yandang and Furong. The content of Pb,Cd,Cu,Hg in these samples had been determined and their pollution status had been evaluated by both single factor comprehensive pollution index method and Nemerow pollution index method. The results showed that indexes for Dendrobium officinale Kimura et Migo were less than 0. 6,which indicated that Dendrobium officinale Kimura et Migo had not been polluted by heavy metals,as well as the water. Analysis showed that the subatrate was clean and met the requirement for the development of pollution-free Dendrobium officinale Kimura et Migo,but the content of Cd should be strictly controlled. The single factor comprehensive pollution index of Cd in substrate was 1. 33,which suggested that the substrate had been slightly polluted,while the Nemerow pollution index was0. 97,which almost reached the warning line.

关 键 词：铁皮石斛 产地环境 重金属 污染评价 

分 类 号：S682[农业科学—观赏园艺]