DETERMINATION OF BROMIDE BY LOW-POWER SURFATRON MICROWAVE INDUCED PLASMA AFTER BROMINE CONTINUOUS GENERATION

被引：29
作者：
CALZADA, MD
QUINTERO, MC
GAMERO, A
COTRINO, J
URIA, JES
SANZMEDEL, A
机构：
[1] UNIV OVIEDO,FAC CHEM,DEPT PHYS & ANALYT CHEM,OVIEDO,SPAIN
[2] UNIV CORDOBA,FAC SCI,DEPT APPL PHYS,CORDOBA,SPAIN
来源：
TALANTA | 1992年 / 39卷 / 04期
关键词：
D O I：
10.1016/0039-9140(92)80146-5
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple continuous flow generation of volatile bromine is described for the determination of low concentrations of the element by atmospheric-pressure argon microwave induced plasma (MIP) surfatron. Bromine is continuously generated by mixing the bromide with sulphuric acid and hypochlorite solutions. The bromine vapour is separated from the aqueous phase by a gas-liquid separator and is desiccated by passing it through concentrated sulphuric acid. The detection limit attained was 2-mu-g/l. and the precision was +/- 0.7% (at the 80-mu-g/l. level). The proposed determination is very selective if oxidizing/reducing agents are absent. The procedure has been tested for bromide determination in two drug preparations. Good agreement between the experimental results and the certified values has been obtained.
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页码：341 / 347
页数：7
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