Abstract
Abstract 1) Polarographic behavior of the six isomers of bis(nitrophenyl)arsinic acid was considered and the waves can roughly be divided into 1st and 2nd waves in acid range at the dropping mercury electrode. 2) The limiting current is controlled by the diffusion process and the Ilkovic equation is applicable. 3) The electrolytic reduction mechanisms of the 1st and 2nd waves are considered to be in the following manner, taking that of 4,4′-bis(nitropenyl)arsinic acid as an example: (see the figure of the preceding page). 4) By the utilization of the 1st wave, polarography can be used for the determination of bis(nitrophenyl)arsinic acids, especially those with the nitro group in 2-position.
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