摘要
依据硫离子催化碱性品红褪色的指示反应,建立了测定硫离子的动力学分析方法,在pH9.20的硼砂介质中,在室温下, 本法线性测定范围为0.025-1.80mg/L,除溴酸根离子和亚硫酸根离子干扰外,其余试样中的共存离子不干扰本方法的使用。亚硫酸根的干扰可加入甲醛除去,溴酸根的干扰,可加入溴离子消除。用本法测定了溴化锂致冷液中的硫离子。
A Catalytic procedure for the determination of trace Sulfide was proposed based on the Catalytic effect of in on the decolouration graph is linear for 0.025-1. 80mg/L S2-,and the detection limit is 0.018mg/L. The interference effect of SO32-could bereaction of fuchsin basic.The calibration effectively eliminated by formaldehyde. The method has been successfully applied to the determination of trace amounts of Sulfion in the Lithium Brominde refrigrant.
