催化光度法测定水中痕量的α-萘胺  

Determination of Trace Naphthylamine in Water by Catalytic Photometry

作　　者：刘连伟[1] 孙衍华[1] 耿玉珍 刘葵 

机构地区：[1]山东农业大学基础部

出　　处：《分析试验室》1999年第4期39-41,共3页Chinese Journal of Analysis Laboratory

摘　　要：在Ｈ２ＳＯ４介质中，α－萘胺能减弱碘对亚砷酸与硫酸铈氧化还原反应的催化作用，研究了其动力学条件，建立了测定痕量α－萘胺的催化动力学光度分析方法。检出限为１．０×１０－８ｇ·Ｌ－１，表观摩尔吸光系数为２．０７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，线性范围为０．０５０～０．５０ｍｇ·Ｌ－１。本法已用于水样中α－萘胺测定。t was found that naphthylamine could weaken the catalytic effect of iodine on the redox reaction betrueen arsenious acid and cerium() sulfate in sulfuric acid medium,and the kinetic conditions were studied.Based on this technique a catalytic photometric method for the determination of trace naphthylamine was established.It is shown that the detection limit,apparent molar absorptivity and linear range are 1.010-8gL-1,2.07105Lmol-1cm-1 and 0.050050mgL-1,respectively for naphthylamine.This method has been used to determine naphthylamine in water with satisfactory results.

关 键 词：催化光度法 Α-萘胺 水分析 萘胺 水质监测 

分 类 号：O611.1[理学—无机化学] X832.02[理学—化学]