流动注射-化学发光法测定盐酸羟胺

FIA-CL Determination of Hydroxyammonium Chloride

基于盐酸羟胺在弱酸性介质中被ＫＩＯ４ 氧化产生Ｈ２ Ｏ２ ， Ｈ２ Ｏ２ 与Ｌｕｍｉｎｏｌ 发生化学发光反应，设计了流动注射—化学发光测定盐酸羟胺的方法． 线性范围为０－０３ ～１－０μｇ／ｍＬ； 检出限为６－７ｎｇ／ｍＬ； ＲＳＤ 为３－６ ％ ． 测定含盐酸羟胺试样， 回收率为９５ ％ ～９８ ％ ．

A new method for determination of hydroxyammonium chloride with FIA-CL was developed in this paper.The principle of the method is that the hydroxyammonium chloride reacted with KIO 4 to generate H 2 O 2 in weak acid medium,and by chemiluminescence measurment of luminol- H 2 O 2 system,hydroxyammonium chloride was indirectly determined.The linear range was from 0.03～1 0μg/mL.RSD was 3 6% and the detection limit was 6 7ng/mL.A complete analysis can be performed within 2 minutes.The influence of foreign compounds was studied.The method was applied to determination of hydroxyammonium chloride in samples,and the recovery was from 95% to 98%.