ISSN:
1436-5073
Keywords:
antimony
;
3,5-dibromo-PADAP
;
emulsifier OP
;
micelle solubilization spectrophotometry
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract A simple, sensitive and selective micelle solubilization spectro-photometric method is described for the determination of micro amounts of antimony(III) in waste water with 2-(3,5-dibromo-2-pyri-dylazo)-5-diethylaminophenol (3,5-dibromo-PADAP) as colour reagent and emulsifier OP as solubilizing and sensitizing agent. In 0.15M HCl, antimony forms a blue-green ternary complex with the above-mentioned reagents. The complex exhibits maximum absorption at 630nm, and the value of the apparent molar absorption coefficient is found to be 5.2 × 1041 mol−1 cm−1. The complex is stable up to 7 days at room temperature. The system obeys Beer's Law in the range 0–25 μg Sb(III) per 10 ml. Most metal ions do not interfere with the determination of antimony.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01242257
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