【摘要】 在碱性条件下,基于硫离子对鲁米诺和高碘酸钾化学发光反应有很强的增敏作用,建立了反向流动注射化学发光法检测水中痕量硫离子的新方法。在优化实验条件下,硫离子浓度在8.0×10-10~5.0×10-6g/mL范围内与发光强度呈良好的线性关系;检出限(3σ)为2.0×10-10g/mL;相对标准偏差为2.3%(n=11,1.0×10-8g/mLS2-)。该方法用于环境水样中S2-的测定,结果令人满意。更多还原

【Abstract】 A new reverse flow-injection chemiluminescence method for the determination of trace amounts of sulfide was developed.It is based on the enhancement of sulfide on the chemiluminescence reaction of KIO₄ with Luminol.The relationship between the chemiluminescence intensity and the concentration of sulfide is linear in the range of 8.0×10^-105.0×10^-6 g/mL.The detection limit is 2.0×10^-10g/mL with the relative standard deviation 2.3%(n=11,(c=1.0×10^-8g/mL)).The method has been applied to the determination of sulfide in water with satisfactory results.更多还原