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8352302 
Journal Article 
Kinetic-spectrophotometric determination of MnII in nanograms based on its catalytic effect on periodate oxidation of 2-amino-m-xylene 
Kaushik, RD; Malik, R; Tiwari, MM; Singh, J; Singh, P 
2014 
0 
Research Journal of Pharmaceutical, Biological and Chemical Sciences
ISSN: 0975-8585 
5 
3 
1963-1971 
English 
The progress of MnII catalysed periodate oxidation of 2-amino-m-xylene in acetone-water medium was followed by monitoring the increase in the absorbance of reaction intermediate. The main reaction product is 2,6-dimethyl-p-benzoquinone. The reaction was found to be first order with respect to catalyst, substrate and oxidant each. The conditions were developed for kinetic-spectrophotometric determination of MnII in the range 107.88-1294.56 ng/ml. Molar extinction coefficient and Sandell's sensitivity for various calibration curves developed are respectively, 57500 to 68100 L. mol-1.cm-1 and 1.78 to 2.11 ng.cm-2. The characteristics of various calibration curves, percentage recovery, effect of interferrants and correlation coefficient etc have been evaluated. The method is better in terms of cost of analysis and ease of determination as well as involvement of easily available equipments and facilities. 
2,6-dimethyl-p-benzoquinone; 2-amino-m-xylene; Nanogram estimation; Periodate ion