Flow injection determination of bromide ion in a developer using bromide ion-selective electrode detector

A potentiometric flow injection determination method for bromide ion in a d eveloper was proposed, by utilizing a flow-through type bromide ion-selecti ve electrode detector. The sensing membrane of the electrode was Ag2S-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 wa s found to exist between peak height and the concentration of the bromide i on in a developer in a concentration range from 1.0 x 10(-3) to 1.0 x 10(-2 ) mol l(-1). The relative standard deviation for 10 injections of a 6 x 10- 3 mol l(-1) bromide ion in a developer was 1.3% and the sampling rate was c a 17-20 samples h(-1). The present method was free fr om the interference o f an organic reducing reagent, an organic substance in a developer sample s olution for the determination of bromide ion in a developer. (C) 1999 Publi shed by Elsevier Science B.V. All rights reserved.