微流动注射化学发光检测系统测定自来水中次氯酸根

被引:5
作者
刘伟
裴翠锦
章竹君
机构
[1] 陕西师范大学化学与材料科学学院
关键词
微流动注射; 化学发光; 次氯酸根;
D O I
10.15983/j.cnki.jsnu.2005.03.019
中图分类号
O661.1 [水分析]; O657.3 [光化学分析法(光谱分析法)];
学科分类号
摘要
基于次氯酸根能够直接氧化鲁米诺产生化学发光的原理,结合微加工技术,建立了微流动注射化学发光检测系统测定自来水中次氯酸根的方法.微检测系统是在聚甲基丙烯酸甲酯(PMMA)片(50 mm×40 mm×5 mm)上通过激光雕刻微通道(宽为200μm,深为100μm)并结合双T的进样方式(进样量约为0.3μL)来实现.结果表明,该方法测定次氯酸根的线性范围为3.0×10-7~1.0×10-4g/mL,方法的检出限为1.4×10-7g/mL.11次平行测定的相对标准偏差为4.5%.该方法简单、分析速度快(368次/h)、耗样量少,已成功应用于自来水中次氯酸根的测定.
引用
收藏
页码:65 / 67+70 +70
页数:4
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