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2007•Chinese Journal of Spectroscopy LaboratoryRequires access

Determination of Lead in Tea Polyphenol by Graphite Furnace Atomic Absorption Spectrometry

Tang Sen

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Abstract

The amount of Pb in tea polyphenol was determined by graphite furnace atomic absorption spectrometry with NH4H2PO4 and Mg(NO3)2 as matrix modifier,which enhance the ash temperature and eliminate the matrix interference.The method is rapid,simple and accurate with relative standard deviation of 3.2%,recovery of 103% and detection limit of 0.11mg/kg.

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What this paper is about

The amount of Pb in tea polyphenol was determined by graphite furnace atomic absorption spectrometry with NH4H2PO4 and Mg(NO3)2 as matrix modifier,which enhance the ash temperature and eliminate the matrix interference.The method is rapid,simple and accurate with relative standard deviation of 3.2%,recovery of 103% and detection limit of 0.11mg/kg.

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Available abstract

The amount of Pb in tea polyphenol was determined by graphite furnace atomic absorption spectrometry with NH4H2PO4 and Mg(NO3)2 as matrix modifier,which enhance the ash temperature and eliminate the matrix interference.The method is rapid,simple and accurate with relative standard deviation of 3.2%,recovery of 103% and detection limit of 0.11mg/kg.

Key concepts: Graphite furnace atomic absorption, Detection limit, Graphite, Matrix (chemical analysis), Chemistry, Relative standard deviation, Mass spectrometry, Atomic absorption spectroscopy

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