云南茶叶中铅含量的调查及检测分析  

Investigation and Analysis on the Content of Lead in Yunnan Tea

作　　者：杨婉秋[1] 杨冲[1] 段晓艳[1] YANG Wanqiu;YANG Chong;DUAN Xiaoyan(Department of Chemical Science and Technology,Kunming University,Kunming,Yunnan,China 650214)

机构地区：[1]昆明学院化学科学与技术系,云南昆明650214

出　　处：《昆明学院学报》2018年第3期32-36,共5页Journal of Kunming University

基　　金：昆明学院应用型人才培养改革创新资助项目"化学化工类大学生创新实践基地建设"

摘　　要：采用电感耦合等离子质谱仪对217份不同种类云南茶叶的铅含量进行检测分析.结果表明,所检测茶叶样品中铅含量为0~4.251 4 mg/kg,平均含量为0.620 6 mg/kg,所有茶叶样品中铅含量均低于5.0 mg/kg的国家限量标准,仅有3.23%的茶叶样品中铅含量超过2.0 mg/kg的农业部有机茶最大限量标准,说明目前云南不同种类茶叶安全卫生质量较好,但不同种类茶叶中铅含量差异无统计学意义.In order to detect the lead content of Yunnan tea,ICP-MS were used to analyze 217 different types of Yunnan tea. The results showed that the lead content in the tea samples ranged from 0 to 4. 251 4 mg/kg,with an average content of 0. 620 6 mg/kg. The lead content in all samples was below the national limit standard of 5. 0 mg/kg. Only 3. 23% of the samples exceeded the organic tea limit standard of 2. 0 mg/kg from the Ministry of Agriculture. It means that at present,the different kinds of Yunnan tea have good and safe quality but there is no statistic significance in the different lead content of the different types of Yunnan tea.

关 键 词：云南茶叶 电感耦合等离子质谱仪 铅 检测 

分 类 号：TS272[农业科学—茶叶生产加工]