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This paper reports a new chemiluminescence system i.e.luminol-H_2O_2-IO_4~- catalyzed by sulphide ion(S~(2-)).Based on this catalysis,a newchemiluminescence(CL)method for the determination of trace S~(2-)is pro-posed.The detection limit is 0.2μg/LS~(2-),the linear dynamic range is 5μgto 100βμg/L S~(2-)and the variation coefficient at an sulphide concentrationof 100μg/L S~(2-)is 4.5%(n=10).The method has been satisfactory applied tothe determination of trace sulphide ion in water.
This paper reports a new chemiluminescence system ieluminol-H_2O_2-IO_4-catalyzed by sulphide ion (S 2 -). Based on this catalysis, a new chemiluminescence (CL) method for the determination of trace S- the pro-posed detection limit is 0.2 μg / LS ~ (2 -), and the linear dynamic range is 5 μg to 100 β μg / LS ~ (2-) and the variation coefficient at an exposure concentration of 100 μg / LS ~ 4.5% (n = 10). The method has been satisfactory applied tothe determination of trace sulphide ion in water.