示波极谱法测定水中微量苯胺的研究与应用  

Determination of trace aniline in water by oscillographic polarography

作　　者：孙国军[1] 

机构地区：[1]本溪冶金高等专科学校

出　　处：《黄金》2003年第8期43-45,共3页Gold

基　　金：辽宁省教育厅 2 0 2 2 2 0 90 (A)科研课题 (有偿资助项目)

摘　　要：苯胺在磷酸盐介质中 (pH =10 .4 )与次氯酸钠、苯酚反应 ,其产物靛酚蓝在磷酸盐 -氢氧化钠介质中 (pH =12 .74 ) ,在 - 0 .4 2V处 (VS .SCE)产生灵敏的吸附波。苯胺质量浓度在 0 .0 0 4～2 .8mg/L范围内 ,峰电流值 (ip″)与其呈良好的线性关系 ,最低可检测 0 .0 0 2mg/L的苯胺。该方法用于环境水样中微量苯胺的测定 ,结果与标准方法吻合。The reaction of aniline with sodium hydrochlorite and phenol brings indophenol blue into existence in the present of medium phosphate(pH=10.4).The indophenol blue will generate sensitive adsorption wave at the point of -0.42V in the present of media phophate sodium hydroxide(pH=12.74).The peak point current( i p″) is better linear with aniline in the range 0.004～2 8mg/L of aniline's mass density.This method can be used to determine trace aniline in environmental water,getting the same result as determined by standard method.This method can detect aniline as low as 0.002mg/L

关 键 词：苯胺 示波极谱法 吸附波 

分 类 号：O657.14[理学—分析化学]