Zhongguo shipin weisheng zazhi (Apr 2023)

Distribution characteristics of heavy metals and mineral elements in tea from Sichuan Province

  • ZHONG Yang,
  • RUAN Ruoyun,
  • TAN Xin,
  • HE Huan,
  • WANG Xin

DOI
https://doi.org/10.13590/j.cjfh.2023.04.013
Journal volume & issue
Vol. 35, no. 4
pp. 564 – 568

Abstract

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ObjectiveTo study the distribution characteristics of heavy metals and mineral elements in tea from Sichuan Province.MethodsFour heavy metals and 14 mineral elements in 242 batches of tea samples collected from Sichuan Province were detected and analyzed by inductively coupled plasma mass spectrometry （ICP-MS）.ResultsIn 242 batches of tea samples from Sichuan Province， the content of heavy metals was Cr>Pb>As>Cd， and the coefficient of variation was Pb>Cr>As>Cd. The content of mineral elements was Sn>Na>Mo>V>Al>Fe>Co>Cu>Mn>Ni>Zn>Ca>K>Mg with an average coefficient of variation of 41.8%-57.1%. It was found that Zn， V and Ni elements were characteristic elements in 242 batches of tea from Sichuan Province. The tea from Dazhou， Meishan， Ganzi， Guangyuan， Bazhong， Zigong and Leshan had a strong tendency to enrich mineral elements according to the comprehensive score of mineral elements content.ConclusionThis study can be used as a reference for the background value of 18 elements in tea from Sichuan Province， and provide data reference for related enterprises， regulatory agencies and tea researchers.

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