绿茶中稀土元素分布特征与相关性研究  

Study of Rare Earth Elements Distribution Characteristics and Relationship in Green Tea

作　　者：徐铨 鲁劲澜 付美娟 张宝林[1] 王震[1] 罗华兰[1] 周雪丽[1] 刘芳[1] 陈晔 刘凯[1] 

机构地区：[1]贵州省农产品质量安全监督检验测试中心,贵州贵阳550004 [2]贵州大学酿酒与食品工程学院,贵州贵阳550025 [3]思南县茶桑局,贵州思南565100 [4]贵州省化工研究院,贵州贵阳550002

出　　处：《耕作与栽培》2017年第5期4-7,共4页Tillage and Cultivation

摘　　要：试验采用微波消解处理样品,电感耦合等离子体质谱法测定贵州4县中86份绿茶样品的16种稀土元素含量,分析绿茶中稀土元素组成特征及不同地区绿茶的稀土含量关系。结果表明:86份绿茶样品均检出稀土元素,稀土元素含量范围为0.1468~1.9063mg/kg,其中以轻稀土元素为主,所占比例为67.40%,稀土元素总量、轻稀土元素含量和重稀土元素含量平均值分别为0.4544mg/kg、0.3062mg/kg和0.1481mg/kg;绿茶中稀土元素相关性显著,对轻稀土元素有富集效应,且轻、重稀土元素之间存在分馏作用及生态学效应。The experimental samples by microwave digestion processing,sixteen kinds of rare earth elements in four counties of eighty-six green tea samples from Guizhou province were determined by inductively coupled plasma mass spectrometry,the analysis of rare earth elements characteristics and different parts of the relationship between the rare earth content of green tea. The results showed that rare earth were detected in all eighty-six samples,with the range of 0. 1468 ~ 1. 9063 mg/kg,light rare earth elements were the main among sixteen rare earth elements,the proportion is 67. 40%,the concentrations of total rare earth elements,light rare earth elements and heavy rare earth elements in green tea were 0. 4544 mg/kg,0. 3062 mg/kg and 0. 1481 mg/kg. Significant correlation of rare earth elements in green tea. Green tea has enrichment effect to the light rare earth elements,and fractionation effect between light and heavy rare earth elements and ecology effect.

关 键 词：绿茶 稀土元素 电感耦合等离子体质谱 含量特征 

分 类 号：X131.1[环境科学与工程—环境科学]