Studies On Perchlorate And Hydrogen Phthalate Liquid Membrane Electrodes Based On Crystal Violet And Brilliant Green

Liquid membrane holders were designed from concentric pyrex tubesrnby glass blowing and employed to design perchlorate and hydrogen phthalaternelectrodes based on Crystal Violet perchlorate and Brilliant Green hydrogenrnphthalate salts. Polyviny chloride discs , with 1-chloronaphthalene asrnplasticizer , were used to support the liquid membranes which consisted ofrnnitrobenzene, 1 , 2-dichloroethane or 1, 2 -dichlorobenzene in the case ofrnCrystal Violet perchlorate and nitrobenzene in the case of the other.rnSeveral electroanalytical parameters have been evaluated and both perchloraternand hydrogen phthalate electrodes respond to perchlorate , periodate , Iodide ,rnsaccharin , and hydrogen phthalate, with selectivity in that order. Thernelectrodes were found to respond to these anions within 60 seconds , in widernconcentration ranges ( slopes 52-60 mv / decade ) with detection limit ofrn6.7x10“ ^ to 4.7xlO~ ^M. The perchlorate electrode was employed to determinernperchlorate in artificial samples with three potentiometric methods andrnresults were found to have reasonable accuracy and precision

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