摘要
目的：了解河南省主要茶城市流通的茶叶样品中16种稀土元素分布情况。方法：采用电感耦合等离子质谱仪（ICP-MS）对消解后样品溶液中的16种稀土元素进行同时测定，并用SPSS 19软件对测定结果进行数据统计。结果：90份样品中稀土元素的总检出率为72.6%，含量均值为0.095 mg/kg，稀土Ce、La和Nd的含量较高，而其余13种稀土含量极低。16种稀土元素在信阳、南阳、郑州的总检出率分别为71.0%、71.7%、75.2%，含量均值分别为0.092 mg/kg、0.088 mg/kg、0.106 mg/kg。结论：河南省主要茶城市的茶叶中稀土Ce、La和Nd的含量较高，而其余13种稀土含量极低。
Abstract
Objective To understand the status of rare earth elements in tea in Henan province. Methods The tea samples after acidolysised were tested and analysed for rare earth elements by ICP-MS, and data were analyzed with SPSS 19 software. Results The detection rates of rare earth elements among 90 samples were 72.6%, with means of 0.095 mg/kg. The detection rates of rare earth elements among Xin Yang, Nan Yang and Zheng Zhou were 71.0%, 71.7%, 75.2% respectively, with means of 0.092, 0.088 and 0.106 mg/kg, respectively. Conclusion With means of the rare earth elements of Ce, La and Nd in tea of Henan province were higher, while the contents of the remaining 13 kinds rare earth elements were extremely low.
NETL
NSTL
维普
万方数据