Abstract
A potentiometric flow injection determination method for bromide ion in a developer was proposed, by utilizing a flow-through type bromide ion-selective electrode detector. The sensing membrane of the electrode was Ag 2S-AgBr membrane. The response of the electrode detector as a peak-shape signal was obtained for injected bromide ion in a developer. A linear relationship was found to exist between peak height and the concentration of the bromide ion in a developer in a concentration range from 1.0×10 −3 to 1.0×10 −2 mol l −1. The relative standard deviation for 10 injections of a 6×10 −3 mol l −1 bromide ion in a developer was 1.3% and the sampling rate was ca 17–20 samples h −1. The present method was free from the interference of an organic reducing reagent, an organic substance in a developer sample solution for the determination of bromide ion in a developer.
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