Graphite Furnace Atomic Absorption Spectrometry-Direct Injection Method for Determination of Lead in Red Grade Wine

doi:10.7506/spkx1002-6300-200918050

FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (18): 233-236.doi: 10.7506/spkx1002-6300-200918050

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Graphite Furnace Atomic Absorption Spectrometry-Direct Injection Method for Determination of Lead in Red Grade Wine

GUO Jin-ying，LI Li，LIU Kai-yong，LI Song-biao，HOU Yu-ze，SONG Li-xia，LIU Song-li

College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471003, China

Received:2008-09-25 Online:2009-09-15 Published:2010-12-29
Contact: GUO Jin-ying E-mail:guojinying8@163.com

Abstract

Abstract:

A rapid analytical method for direct injection determination of trace lead in red grape wine was proposed using graphite furnace atomic absorption spectrometry (GF-AAS). Red grape wine was diffused in 0.15 mol/L HNO3 and injected into the GF with the addition of NH4H2PO4 as a matrix modifier and ashed at 700 ℃ and atomized at 1800 ℃ for the analysis under the protection of argon. The recovery of lead in spiked red wine was 98.00% with a relative standard deviation of 3.004%. This method is rapid and accurate without complex sample pretreatment.

Key words: graphite furnace atomic absorption spectrometry (GF-AAS), red wine, ammonium dihydric phosphate, lead

CLC Number:

TS207.51

GUO Jin-ying，LI Li，LIU Kai-yong，LI Song-biao，HOU Yu-ze，SONG Li-xia，LIU Song-li. Graphite Furnace Atomic Absorption Spectrometry-Direct Injection Method for Determination of Lead in Red Grade Wine[J]. FOOD SCIENCE, 2009, 30(18): 233-236.

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Graphite Furnace Atomic Absorption Spectrometry-Direct Injection Method for Determination of Lead in Red Grade Wine

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