Determination of 5 heavy metal elements and 15 rare-earth metal elements in dark tea

Authors

CHEN Xiong, Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, Hunan 410111, China
FANG Xuanyi, Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, Hunan 410111, China
DAI Xuan, Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, Hunan 410111, China
CHEN Tiebi, Department of Biochemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
LIU Xiaowen, Department of Biochemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China; Key Laboratory of Comprehensive Utilization of Advantage Plants Resources in South Hunan, Yongzhou, Hunan 425199, China
LI Wenyi, Department of Biochemistry, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China; Key Laboratory of Comprehensive Utilization of Advantage Plants Resources in South Hunan, Yongzhou, Hunan 425199, China

Abstract

Under the optimized conditions, the samples were analyzed by ICP—MS with the triple internal standard elements Rh, In and Re. Good linearity of standard curves of twenty elements were obtained, and all the linear coefficient of them were above 0.999. The detection limits were in the range of 0.001 2～0.10 ng/mL. GBW10052-green tea, the certified reference material was analyzed and the results showed good agreement with the certified values. Five dark tea samples were determined by the proposed method. In the recovery experiment controlled by adding stand substance, the recoveries were range from 92% to 105%. It was indicated that the method was reliable for determining heavy metal elements and rare-earth elements in tea samples.

Publication Date

8-28-2016

First Page

55

Last Page

57,205

DOI

10.13652/j.issn.1003-5788.2016.08.013

Recommended Citation

Xiong, CHEN; Xuanyi, FANG; Xuan, DAI; Tiebi, CHEN; Xiaowen, LIU; and Wenyi, LI (2016) "Determination of 5 heavy metal elements and 15 rare-earth metal elements in dark tea," Food and Machinery: Vol. 32: Iss. 8, Article 13.
DOI: 10.13652/j.issn.1003-5788.2016.08.013
Available at: https://www.ifoodmm.cn/journal/vol32/iss8/13

References

[1] 宋鲁彬, 黄建安, 刘仲华, 等. 中国黑茶对消化道肿瘤的作用[J]. 茶叶科学, 2009, 29(3): 191-195.
[2] 胡蝶, 王克勤, 刘仲华, 等. ⁶⁰Co-γ辐照对安化黑茶“千两茶”品质与功能成分的影响[J]. 食品与机械, 2014, 30(3): 127-131.
[3] 吴朝比, 黄建安, 刘仲华, 等. 黑茶调节高脂血症作用及机理研究进展[J]. 食品科学， 2011, 32(19): 307．
[4] 王竹天. 食品污染物监测及其健康影响评价的研究简介[J]. 中国食品卫生杂志， 2004(2): 99-103.
[5] 王泽科, 程水连. 微波消解—原子荧光光谱法测定紧压茶叶中的锌, 硒[J]. 食品与机械, 2011, 27(3): 79-81.
[6] 殷钢. 微波消解—石墨炉原子吸收光谱法测定茶叶中的铅[J]. 江苏预防医学, 2009, 20(2): 69-70.
[7] 陶健, 蒋炜丽, 王晖, 等. 石墨炉原子吸收光谱法测定茶叶中铅含量的方法学研究[J]. 中国食品学报, 2010(6): 208-212.
[8] 王小平, 马以瑾, 徐元春. 原子荧光光谱法测定不同产地茶叶中As、Se、Hg和Bi四种元素含量[J]. 光谱学与光谱分析, 2008, 28(7): 1 653-1 657.
[9] 马金晶, 罗雯, 张龙旺, 等. 微波消解—电感耦合等离子体质谱法测定人面果树中的重金属元素[J]. 分析实验室, 2012, 31(7): 32-35.
[10] 孙耀帆, 李群, 江志刚, 等. 电感耦合等离子体质谱法测定花生中34种元素[J]. 分析实验室, 2012, 31(6): 108-112.
[11] LIU Yong-sheng, HU Zhao-chu, LI Ming, et al. Applications of LA—ICP—MS in the elemental analyses of geological samples[J]. Chinese Science Bulletin, 2013, 58(32): 3 863-3 878.
[12] 王斌, 徐银峰, 李国强, 等. 微波消解/ICP—MS法测定二色补血草中27种元素[J]. 光谱学与光谱分析, 2009(11): 3 138-3 140.
[13] 李刚, 高明远, 诸垄. 微波消解—电感耦合等离子体质谱法测定植物样品中微量元素[J]. 岩矿测试, 2010, 29(1): 17-22.
[14] 邱丽, 施意华, 杨仲平, 等. ICP—MS 法测定隐伏矿床植物中的多种微量元素[J]. 广西科学院学报, 2010(3): 303-305.
[15] 诸堃, 王君, 李刚. 微波消解—ICP—AES 测定植物样品中多种微量元素[J]. 光谱实验室, 2009(5): 1 168-1 171.
[16] 谭惠仁. ICP—AES, ICP—MS, AFS, IC 分析技术在茶叶中微量元素的分析研究[D]. 广州: 中山大学, 2013: 36-44.
[17] 徐子刚, 姚琪, 林少美. 微波消解—电感耦合等离子体质谱法测定茶叶中的稀土元素[J]. 浙江大学学报: 理学版, 2007, 34(2): 197-200.
[18] 施力玮, 宋景景, 闫秀丽. 微波消解—电感耦合等离子体质谱 (ICP—MS) 测定茶叶中稀土元素[J]. 湖北大学学报: 自然科学版, 2015, 37(4): 396-399.
[19] 林少美, 陈珞洛, 王超, 等. 电感耦合等离子体质谱法测定香菇中的 20 种元素[J]. 中国卫生检验杂志, 2014, 24(5): 670-673.