贵州省地产茶叶中稀土元素残留状况研究

发布时间：2018-07-03 08:04

  本文选题：茶叶 + 稀土元素　； 参考：《食品研究与开发》2016年21期

【摘要】：以贵州省地产茶叶为研究对象,采用ICP-MS分析贵州省贵阳市及7个地州共95份茶叶样品中16种稀土元素含量特征。结果表明:以稀土氧化物总量计,95份样品均检出稀土元素,总残留量范围为0.026 mg/kg~2.352 mg/kg,其中以轻稀土镧、铕、铈、钐、镨、钕含量最高,占总量的62.01%,4份样品超出了GB 2762-2012《食品安全国家标准食品中污染物限量》中规定的茶叶中稀土元素限量标准(≤2.0 mg/kg),合格率为95.79%,总体看来,贵州省地产茶叶中稀土元素污染较小,但仍需加强管理和监测。
[Abstract]:The contents of 16 rare earth elements in 95 tea samples from Guiyang and 7 prefectures of Guizhou Province were analyzed by ICP-MS. The results showed that the rare earth elements were detected in 95 samples measured by the total amount of rare earth oxides, and the total residual amount was 0.026 mg/kg~2.352 mg / kg. The content of lanthanum, europium, cerium, samarium, praseodymium and neodymium was the highest. Four samples accounted for 62.01% of the total amount exceeded the limit standard of rare earth elements in tea (鈮，

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