都匀毛尖茶及其土壤铅和镉的含量变化与相关性  

Lead and Cadmium Content Variation and Correlations in Duyun Maojian Tea and Soil

作　　者：杨艳[1] 宋丽莎[2] 孙成斌[1] 李静[2] 钟雪莲[1] 

机构地区：[1]黔南民族师范学院化学与化工系,贵州都匀558000 [2]黔南民族师范学院生命科学系,贵州都匀558000

出　　处：《贵州农业科学》2014年第8期164-167,共4页Guizhou Agricultural Sciences

基　　金：贵州省科技计划课题"贵州省都匀毛尖茶工程技术研究中心建设"[黔科合农G(2010)字4001];黔南州社会发展科技计划项目"都匀毛尖茶的化学分析与质量评价模型建立"[黔南科合字(2011)2];贵州省黔南民族师范学院地方特色研究专项项目"都匀毛尖茶品质与生长环境的化学研究"(qnsy2012T08)

摘　　要：为探明都匀毛尖茶及土壤中重金属铅、镉的含量状况，对都匀毛尖茶主要产区（团山茶场、牛场茶场、供销茶场）的茶青及土壤取样，分析其干茶和土样中铅、镉含量。结果表明：都匀毛尖茶中铅含量为0．1253～0．5565 mg/kg，平均值为0．2899 mg/kg；镉含量为0．0758～0．1349 mg/kg，平均值为0．1092 mg/kg；土壤中铅含量为4．333～7．684 mg/kg，平均值为6．144 mg/kg，镉含量为0．0416～0．2214 mg/kg，平均值为0．1246 mg/kg。结论：都匀毛尖茶铅含量符合有机茶规定，镉含量符合国家限量标准，都匀毛尖茶主产区土壤中的铅和镉含量满足有机茶产地铅和镉限量要求。To investigate the content of lead and cadmium in Duyun Maoj ian tea and soil,Samples were collected from Duyun Maoj ian tea growing areas（Tuanshan,Niuchang,Gongxiao）,and lead and cadmium content in tea and soil was analyzed.Results：The lead content in Duyun Maojian tea was 0.125 3~0.556 5 mg/kg,with an average of 0.289 9 mg/kg,the cadmium content was 0.075 8~0.134 9 mg/kg, with an average of 0.109 2 mg/kg.The lead content in soil was 4.333 ~ 7.684 mg/kg,the average value was 6.144 mg/kg, the cadmium content was 0.041 6 ~ 0.221 4 mg/kg, the average value was 0.124 6 mg/kg.The lead content in Duyun Maojian tea area was in accordance with the organic tea,the content of cadmium was in line with national standards.The contents of lead and cadmium in soil met the requirements of the limits of the organic tea producing areas.

关 键 词：都匀毛尖茶 石墨炉原子吸收分光光度法 铅镉含量 

分 类 号：S571.1[农业科学—茶叶生产加工]