摘要
为了解绵阳市茶叶中稀土元素含量情况,抽取绵阳市茶叶主产区87个茶叶样品,经微波消解后,用电感耦合等离子体质谱仪测定16种稀土元素含量。结果表明:本研究所用检测方法线性关系良好,准确度、精密度和方法检出限均能满足测定要求;绵阳市茶叶样品中稀土元素含量范围为0.20~1.86 mg·kg^(-1),平均值为(0.95±0.41)mg·kg^(-1),以轻稀土元素为主,占总含量的75.3%;绵阳市茶叶样品中含量较高的前4种稀土元素分别是Ce、La、Nd、Y,占稀土元素总含量的76.4%;人体通过绵阳市茶叶摄入的稀土量低于稀土元素每日允许摄入量限值。综上,绵阳市茶叶对人体健康风险性小,未来可把Ce、La、Nd、Y列为重点检测元素。
In order to explore the content of rare earth elements(REE)in the teas in Mianyang City,a total of 87 tea samples were collected from the major producing areas in Mianyang City.After microwave digestion,16 kinds of REE were determined by Inductively Coupled Plasma Mass Spectrometer(ICP-MS).The results showed that the detection method used in this study had a good linear relationship,and the accuracy,precision,and method detection limits could meet the requirements of determination.The contents of REE in tea samples from Mianyang City ranged from 0.20 to 1.86 mg·kg^(-1),with an average of(0.95±0.41)mg·kg^(-1).Light rare earth elements accounted for 75.3%of the total content,and the top four elements with higher content were Ce,La,Nd,and Y,accounting for 76.4%of the total REE content.The amount of REE ingested by the tea drinkers was below the allowable daily intake limit of REE.To sum up,the teas in Mianyang City pose a low risk to human health,and Ce,La,Nd,and Y can be listed as key detection elements in the future detection.
作者
王立东
白如霞
王雪梅
谭欣
WANG Lidong;BAI Ruxia;WANG Xuemei;TAN Xin(Mianyang Agricultural Products Quality Safety Inspection and Testing Center,Mianyang,Sichuan 621000,China;School of Resource and Environmental Engineering,Mianyang Normal University,Mianyang,Sichuan 621000,China;College of Life Science and Biotechnology,Mianyang Normal University,Mianyang,Sichuan 621000,China)
出处
《天津农业科学》
CAS
2024年第7期79-82,共4页
Tianjin Agricultural Sciences
基金
国家自然科学基金项目(32101363)
绵阳师范学院生态安全与保护四川省重点实验室开放基金项目(ESP1901)。
关键词
绵阳市
茶叶
稀土元素
电感耦合等离子体质谱仪
含量测定
Mianyang City
tea
rare earth elements
inductively coupled plasma mass spectrometer
content determination
