FOOD SCIENCE ›› 2004, Vol. 25 ›› Issue (9): 157-159.

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Fast Determination of Trace Copper in Tea by FAAS Adopting Suspension Sample Introduction Method

 ZHAO  Deng-Shan   

  1. Department of Chemical Engineering, Huaiyin Institute of Technology
  • Online:2004-09-15 Published:2011-10-24

Abstract: Fast determination of copper in tea by suspension sample introduction-flame atomic absorption spectrometry(FAAS). Samples were dried by the oven, ground down, sieved and made into agar suspension, to be injected into air-acetyleneflame for determination. Recoveries of standard addition were 98.3%~100.3%, RSD was less than 2.5%(n=6) and the detectionlimit was 0.038μg/ml. 

Key words: suspension sample introduction, flame atomic absorption spectrometry(FAAS), tea, copper