抄録
A thin-layer chromatographic method for the determination of an amount of free formaldehyde in children's clothing using the plates treated with 3-aminopropyltriethoxysilane is described. By elution with benzene-methanol (25: 1 v/v) on a silica gel TLC plate treated with 3-aminopropyl groups, the formaldehyde and low-molecular weight aldehyde as their lutidine derivatives were separated. By this method, the amount of formaldehyde was determined within 4.76% error in the range of 0.02-1.0 μg and 0.05-6.0 μg in 1 ml of aqueous solution by using a fluorescence spectrophotometer and a visible spectrophotometer, respectively, and the limit of detection was 0.4 ng.
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