Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2007-07-01

Spectrophotometric determination of anilines based on charge-transfer reaction.

Hao Wu, Li Ming Du

Index: Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 67(3-4) , 976-9, (2007)

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Abstract

The molecular interactions between aniline, p-toluidines, benzidine and p-phenylenediamine as electron donors and 7,7,8,8-tetracyanoquinodimethane (TCNQ) as acceptor have been investigated by spectrophotometric method. Different variables affecting the reaction were studies and optimized. At the optimum reaction conditions Beer's law was obeyed in a concentration limit of 0.6-3.0, 0.3-3.0, 0.3-3.0 and 0.3-2.7 microg ml(-1) for aniline, p-toluidines, benzidine and p-phenylenediamine. The developed methods were applied successfully for the determination of the studied compounds in waste water and relative standard deviation of the methods were 0.8-3.0%. Percentage recoveries ranged from 97.22% to 102.78%.