四酢酸鉛による水のガスクロマトグラフ分析

概要

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A simple gas chromatographic method for analysis of water is described. The sample is passed through a 2040 cm reaction tube containing a 36 g lead tetraacetate (colourless crystal) where the water reacts to form acetic acid. The acetic acid is carried directly onto a separation column where the acetic acid is separated from other components and is detected with a thermal conductivity detector or a hydrogen flame ionization detector. An using carrier gas is hydrogen or helium. The reaction conditions in which the water reacts completely are 7085°C reaction temperature, less than 2030 m<I>l</I>/min carrier gas flow rate and less than 0.2 μ<I>l</I> water volume as a sample. The lead tetraacetate and by-produced lead peroxide do not react with hydrocarbons, alcohols, ethers and ketones at the above reaction conditions so that this method:is applicable to the determination of water in those organic solvents and gases. The author recognized that the method is comparable to the Karl-Fischer method.
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