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2006•Journal of Jianghan UniversityRequires access

Flow Injection On Line Solid Phase Extraction Pre-concentration System for Pb Determination by FAAS

Haiou Qiu

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Abstract

A new method of flow injection on-line solid phase extraction pre-concentration sys-tem for Pb determination by flame atomic absorption spectrometry(FAAS) was adopted.Trace amounts of lead in the water sample was chelated by xylenol orange and exchanged in the strong al-kalescent negative ion exchange resin column,and then eluted by nitric acid.The lead content was determined by flow injection-flame atomic absorption spectrometry.The working parameters and chemical conditions were discussed and optimized.Interferential experiments with familiar ions in natural water were done.The detection limit was 11.1 ng/mL and the relative standard deviation of this method was 1.80%.The recovery was 96.2% ~ 103.8%.

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What this paper is about

A new method of flow injection on-line solid phase extraction pre-concentration sys-tem for Pb determination by flame atomic absorption spectrometry(FAAS) was adopted.Trace amounts of lead in the water sample was chelated by xylenol orange and exchanged in the strong al-kalescent negative ion exchange resin column,and then eluted by nitric acid.The lead content was determined by flow injection-flame atomic absorption spectrometry.The working parameters and chemical conditions were discussed and optimized.Interferential experiments with familiar ions in natural water were done.The detection limit was 11.1 ng/mL and the relative standard deviation of this method was 1.80%.The recovery was 96.2% ~ 103.8%.

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Available abstract

A new method of flow injection on-line solid phase extraction pre-concentration sys-tem for Pb determination by flame atomic absorption spectrometry(FAAS) was adopted.Trace amounts of lead in the water sample was chelated by xylenol orange and exchanged in the strong al-kalescent negative ion exchange resin column,and then eluted by nitric acid.The lead content was determined by flow injection-flame atomic absorption spectrometry.The working parameters and chemical conditions were discussed and optimized.Interferential experiments with familiar ions in natural water were done.The detection limit was 11.1 ng/mL and the relative standard deviation of this method was 1.80%.The recovery was 96.2% ~ 103.8%.

Key concepts: Solid phase extraction, Detection limit, Elution, Nitric acid, Chemistry, Analytical Chemistry (journal), Extraction (chemistry), Chromatography

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