Abstract
A chemiluminescence (CL) detection method for the determination of sulfite using the reaction of Ru(bipy)32+ (bipy = 2,2′-bipyridyl)–SO32––KBrO3 is described. The concentration of sulfite is proportional to the CL intensity in the range 2.5 × 10–8–9.5 × 10–5 mol l–1. The limit of detection is 3.8 × 10–9 mol l–1 and the relative standard deviation is 4.6% for 5 × 10–5 mol l–1 sulfite solution with nine repeated measurements. This method was successfully applied to the determination of sulfite in sugar and sulfur dioxide in air by using triethanolamine as the absorbent material.
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