Abstract
Abstract A kinetic method for the determination of sulphide based on its inhibition of the Pd(II) catalysed reaction between pyronine G and the hypophosphite ion is described. The reaction was followed spectrophotometrically by measuring the decrease in the absorbance at 548 nm. The influence of reaction variables and the interfering effect of other substances were studied. Under the selected experimental conditions of 5.0 × 10−5 M pyronine G; pH 3.2; 0.7 μg ml−1 Pd(II); 0.4 M H2P02 and 25 ± 0.2°C, sulphide was determined in the range 10–200 ng ml−1. The method was applied to the determination of sulphide in water and air samples.
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Schedule a callMore From: International Journal of Environmental Analytical Chemistry
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