微波增压消解-流动注射化学发光法快速测定去离子水中微量有机物质  

Rapid determination of trace organic substance in deionized water with high-pressure microwave digestion by flow-injection chemiluminescence method

作　　者：高向阳[1] 宋莲军[1] 张平安[1] 冉慧慧[1] 姚贤民[1] 

机构地区：[1]河南农业大学生物技术与食品学院,郑州450002

出　　处：《中国卫生检验杂志》2005年第6期654-656,共3页Chinese Journal of Health Laboratory Technology

基　　金：河南农业大学重点学科建设资助项目(10466-X-082301)

摘　　要：目的:研究一种去离子水中微量有机物质的测定方法。方法:将微波压力快速消解技术与流动注射分析技术结合,利用偶合化学发光反应,根据Cr3+对碱性luminol-H2O2发光体系的线性催化作用,间接测定了去离子水中微量有机物质总量。结果:以Cr3+为评定参数,方法快速简便,灵敏度高,检测下限为4.476×10-11mol/L(1/3Cr3+),多次平行测定(n=6、7)的RSD<2.5%。结论:结果令人满意。Objective:To develop a method for the detection of trace organic substance in deionized water.Methods:A new method for determination of trace organic substance in deionized water was studied.Samples were digested with potassium dichnomate in closed vessel by high-pressure microwave.Results:The lowest detection limit of organic substance was 4.476× 10 -11 mol/L(1/4C) by flow-injection chemiluminescence method, RSD<2.5%(n=6 or 7)and the recovery was 96%~103%.Conclusion:The analytical results are satisfactory.

关 键 词：流动注射化学发光法 有机物质 去离子水 微量 快速测定 微波 流动注射分析技术 CR^3+ 增压 化学发光反应 测定方法 消解技术 催化作用 发光体系 间接测定 检测下限 灵敏度 

分 类 号：R987[医药卫生—药品] R115[医药卫生—药学]