H_2O_2—I~－－鲁米诺碱性介质化学发光测定微量硫离子  

CHEMILUMINESCENT DETERMINATION OF TRACE AMOUNT OF SULFIDE BY ALKALINE SYSTEM OF H_2O_2-I￣- -LUMINOL

作　　者：王晓燕[1] 章荪青[1] 秦化敏 

机构地区：[1]郑州大学化学系,河南教育学院化学系,河南农业大学林学系

出　　处：《郑州大学学报（自然科学版）》1995年第1期88-91,共4页Journal of Zhengzhou University (Natural Science)

摘　　要：本文发现，在碱性介质中，硫（Ⅱ）能增大过氧化氢和碘化物之间的反应速度。将此动学体系与鲁米诺化学发光反应偶合，建立了测定微量硫化物的最佳条件。硫离子浓度在２．０×１０^（－７）－１．２×１０^（－６）ｍｏｌ／Ｌ范围具有线性关系；十次测定８．０×１０^（－７）ｍｏｌ／Ｌ的硫离子，相对标准偏差为４．３％。方法用于模拟油田注水中硫离子的测定，结果满意。Sulfide has the active effect on the oxidization of potassium iodide by hydrogen per-oxide in alkaline solution, This kinetic system may be coupled to chemiluminescence reaction of Lu-minol and applied to determine trace of S￣(2-). The best conditions of determination were established.The linear range of calibration curve is 2.0×10￣(-7)-1.2×10￣(-6)mol/L. The RSD is 4.3%, Themethod has been applied to the determination of sulfide in mock oilfield water with satisfactory re-sults.

关 键 词：碱性介质 鲁米诺 硫离子 测定 化学发光分析 

分 类 号：O614.51[理学—无机化学] O657.3[理学—化学]