CAJ | 학술논문

应用 ICP-MS 法对产自云南省保山市的8种绿茶、3种红茶、6种普洱茶样品中轻稀土元素（LREE）（La，Ce，Pr，Nd，Sm 和 Eu）进行分析．结果表明，LREE 在红茶、绿茶和普洱茶中质量分数丰度变化趋势一致，不同种类茶叶中 LREEs 质量分数差异大，表现为：绿茶＞普洱茶＞红茶，其中普洱茶中轻稀土氧化物（LREOs）总质量分数较高，可能与原料选择的茶叶生长成熟度较高有关．各轻稀土氧化物质量分数占总量高低顺序为：CeO2＞La2 O3＞Nd2 O3＞Pr6 O11＞Sm2 O3＞Eu2 O3，其中 CeO2，La2 O3，Nd2 O3这3种氧化物占总量的89．57％，虽然各茶叶中 LREO 质量分数差异明显，但质量分数丰度模式相似，不同茶叶间质量分数差异，其原因可能是由于土壤背景值差异引起．
응용 ICP-MS 법대산자운남성보산시적8충록다、3충홍다、6충보이다양품중경희토원소（LREE）（La，Ce，Pr，Nd，Sm 화 Eu）진행분석．결과표명，LREE 재홍다、록다화보이다중질량분수봉도변화추세일치，불동충류다협중 LREEs 질량분수차이대，표현위：록다＞보이다＞홍다，기중보이다중경희토양화물（LREOs）총질량분수교고，가능여원료선택적다협생장성숙도교고유관．각경희토양화물질량분수점총량고저순서위：CeO2＞La2 O3＞Nd2 O3＞Pr6 O11＞Sm2 O3＞Eu2 O3，기중 CeO2，La2 O3，Nd2 O3저3충양화물점총량적89．57％，수연각다협중 LREO 질량분수차이명현，단질량분수봉도모식상사，불동다협간질량분수차이，기원인가능시유우토양배경치차이인기．
ICP-MS method was used to analyze light rare earth elements(LREEs)(La,Ce,Pr,Nd,Sm and Eu)in samples of 8 kinds of Green Tea,3 kinds of Black Tea and 6 kinds of Pu′er tea produced in Baoshan area,Yunnan.The results show that the LREEs content in Black Tea,Green Tea and Pu′er Tea is in accord with the abundance variation tendency with the order from high to low of Green Tea,Pu′er tea and Black Tea.Total content of light rare earth oxides (LREOs)in Pu′er Tea is higher,which might be related to tea maturity.The proportion of each light rare earth element to the total content is in the order from high to low of CeO2 ,La2 O3 , Nd2 O3 ,Pr6 O11 ,Sm2 O3 ,and Eu2 O3 ,among which the content of CeO2 ,La2 O3 ,and Nd2 O3 accounts for 89.57% of the total. Although the mass fraction difference among LREO content in tea is obvious,the abundance is in similar pattern,which might be caused by differences in soil background.