邻羟基萘基荧光酮－溴化十二烷基二甲基苄铵光度法测定微量锡  

Spectrophotometric Determination of Trace Tin with o-Hydroxy-naphthyl Fluorone in the Presence of DDMAB

作　　者：冯泳兰 邝代治 

机构地区：[1]衡阳师范高等专科学校化学系

出　　处：《岩矿测试》1994年第4期309-310,共2页Rock and Mineral Analysis

摘　　要：邻羟基萘基荧光酮－溴化十二烷基二甲基苄铵光度法测定微量锡冯泳兰，邝代治衡阳师范高等专科学校化学系４２１００８邻羟基萘基荧光酮（β－ＨＮＦ）已应用于光度分析测定微量Ｍｏ￣［１］。本文研究了在稀Ｈ＿２ＳＯ＿４介质中，溴化十二烷基二甲基苄铵（ＤＤＭＡＢ）存...he determination of tin(Ⅳ)is based on the formation of a red complex between tin(Ⅳ)and o-hydroxy-naphthyl fluorone in the presence of DDMAB and dilute sulphuric acid medium.The absorbance of the complex is measured at 505nm against a reagent blank with molar absorp-tivity of 1.64×10￣5L·mol￣-1.cm￣-1.The molar ratio of tin(Ⅳ)to o-HNF is estaHbhed as 1:2.Beer’s law is obeyed in the range 0～0. 4 8μg/ml Sn(Ⅳ),The method has been applied to the de-termination of tin(Ⅳ)in ores with satisfactory results.

关 键 词：锡 比色法 邻羟基苯基 荧光酮 二甲基苄铵 

分 类 号：O614.432[理学—无机化学]