ISSN:
1432-1130
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract. A flow injection spectrophotometric method has been developed for the determination of 8-hydroxyquinoline (oxine). The procedure is based on the reaction between oxine and p-aminophenol (PAP) in 4 mol/l NaOH in the presence of 0.004 mol/l KIO4. Using 500 μl injection volume, a PAP concentration of 100 μg/ml and 3.2 ml/min carrier flow, in each one of the three lines of a flow injection manifold, the method provides a sensitivity of 0.0353 absorbance units ml/μg of oxine and a limit of detection of 7.6 ng/ml, being the relative standard deviation (0.06%) of four replicate measurements of a solution containing 4 μg/ml of oxine. The effects of chemical and flow parameters have been carefully considered and the method has been applied to the determination of oxine in water samples at different pH values.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/PL00012728
Permalink
