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  • Title: [Continuous determination of Zn, Cu and Mn in tea by flame atomic absorption spectrophotometry].
    Author: Ma G, Zhang J, Chen W, Han J.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 1999 Jun; 19(3):408-10. PubMed ID: 15819074.
    Abstract:
    This paper reports the determination of trace metals Zn, Cu and Mn in tea by flame atomic absorption spectrophotometry. The method is simple and rapid with good precision and accuracy. The characteristic concentration is 0.009 microg/mL/1% for Zn, 0.031 microg/mL/1% for Cu and 0.017 microg/mL/1% for Mn, respectively. The relative standard deviation is between 0.9% and 5.0%. The recovery rate is between 92.0% and 106.0%.
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