Study on essential and toxic elements intake from drinking of Chinese tea (original) (raw)

Abstract

Twenty different brands of Chinese tea were analyzed for multiple trace elements, including some essential and toxic elements, by neutron activation analysis (NAA). A comparison among tea brands from China, India, US and other countries was made for the ranges and averages of concentrations for Na, K, Mn, Cu, and Br. It has been observed that the trace element contents in tea leaves are largely dependent upon the soil and the environment where the tea grows. Chinese tea is rich in Mn and Cu comparing with those of other counties surveyed, but is indigent in Na. The transference ratio for each element determined (i.e., the fraction of an element in tea leave transferred into solution when tea is leached by percolation) is also reported. Adult daily intakes of some essential and toxic elements from tea drinking were also estimated.

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Authors and Affiliations

  1. China Institute of Atomic Energy, P.O. Box 275-50, Beijing, 102413, China
    Hai-Qing Zhang, Bang-Fa Ni, Wei-Zhi Tian, Gui-Ying Zhang, Dong-Hui Huang, Cun-Xiong Liu, Cai-Jin Xiao, Hong-Chao Sun & Chang-Jun Zhao

Authors

  1. Hai-Qing Zhang
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  2. Bang-Fa Ni
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  3. Wei-Zhi Tian
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  4. Gui-Ying Zhang
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  5. Dong-Hui Huang
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  6. Cun-Xiong Liu
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  7. Cai-Jin Xiao
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  8. Hong-Chao Sun
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  9. Chang-Jun Zhao
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Correspondence toHai-Qing Zhang.

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Zhang, HQ., Ni, BF., Tian, WZ. et al. Study on essential and toxic elements intake from drinking of Chinese tea.J Radioanal Nucl Chem 287, 887–892 (2011). https://doi.org/10.1007/s10967-010-0921-x

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