Potentiometric Chromate Quanti cation Based on Interaction with N, N' Butylen Bis (Saliciliden Iminato) Copper (II)

نویسندگان
Mazloum Ardakani, M. ID 1
Sadeghi, A. ID 2

1 Department of Chemistry,University of Yazd

2 Department of Chemistry,University of Kashan

doi
چکیده

A new chromate-selective electrode, based on the N, N' butylen bis (saliciliden iminato) copper (II) complex as the membrane carrier, was developed. The electrode exhibited a good Nernstian slope of ????28:8  0:5 mV/decade and a linear range of 3:0  10????6 ???? 1:0  10????1 mol.L????1 for chromate. The limit of detection was 3:0  10????6 mol.L????1. It had a fast response time of 5-10 sec and could be used for more than three months. The selective coecients were determined by the Fixed Interference Method (FIM). A chromate-selective electrode could be used in the pH range of 6.5-10.5. It was employed as an indicator electrode for the direct determination of chromate in real samples.

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