Liquid Chromatography - Catalytic Analysis Detection as a Highly Sensitive and Automated Fractional Determination Method: Determination of Iron(II) and (III)

[摘要]：

Liquid chromatographic separation and catalytic analysis detection was investigated for automated fractional determination of iron(II) and (III). Chromatographic separation between these species was performed with a deoxygenated mixed solution (pH 3.5) of ethylenediamine and citric acid as the eluent and a separation column containing sulphonate groups. The eluent was introduced to an air segmented continuous flow analysis based on the catalytic reaction with Bindschedler's green leuco base. The detection limits of this method for iron(II) and (III) were 8.2 nmol dm(-3) and 1.7 x 10(2) nmol dm(-3), 3, respectively. This method was applied to the analysis of lake and pore waters.

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