Determination of Aluminum in Water Samples and Its Speciation Approach by Fluorophotometric Flow Injection Analysis with 8-Quinolinol Coupled with Micelle Sensitization

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Trace amounts of aluminum in water samples were determined by fluorophotometric flow injection analysis. Less harmful 8-quinolinol and Triton X-100 were used as a fluorophotometric derivatizing reagent for Al3+ and a micelle sensitizer, respectively. Even with the traditional and conventional reagents, a linear calibration graph was obtained for Al3+ at the concentration range of 10-7 mol/l level with a limit of detection at 2.8x10-9 mol/l. The sample throughput was 60 h-1. The proposed method was applied to the analysis of a standard reference substance, and the analytical result agreed well with the certified value. The proposed system was also applied to the speciation analysis of tap water and river water samples; aluminum species of free Al3+, hydrolyzed Al species, and Al in suspended particles were fairly evaluated. The recovery test of Al3+ to the water samples was in the ranges of 92–106%.

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  • FIA研究懇談会会誌

    FIA研究懇談会会誌 27 (2), 152-, 2010

    公益社団法人 日本分析化学会　フローインジェクション分析研究懇談会

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