ICP-AES法和NDIR法测定水中总有机碳的比对研究  

A comparison of study on the determination of total organic carbon in water by ICP-AES and NDIR

作　　者：杨元[1] 高玲[1] 谯斌宗 

机构地区：[1]成都市疾病预防控制中心,成都610041 [2]成都市食品药品检验中心,成都610045

出　　处：《中国卫生检验杂志》2011年第1期34-35,共2页Chinese Journal of Health Laboratory Technology

基　　金：四川省医学重点实验室;成都市医学重点实验室建设经费资助

摘　　要：目的:对ICP-AES法和NDIR法测定水中总有机碳进行比对研究。方法:分别采用ICP-AES法和NDIR法对方法的灵敏度、准确度、精密度、分析速度进行综合比对研究。结果:ICP-AES法的检出限为0.6 mg/L(以C计),NDIR法的检出限为0.1 mg/L(以C计);两种方法的线型回归系数均为0.999,两种方法的精密度RSD均<2%,两种方法测定总有机碳标准物质结果均在标示值范围内,两种方法均准确可靠;两种方法对一组样品进行配对测试,结果经t检验分析,无显著性差异。结论:ICP-AES法和NDIR法分析性能基本一致,均满足水中总有机碳含量的测定,ICP-AES法分析速度快于NDIR法,更加适宜批量样品分析。Objective：To compare the two methods of ICP-AES and NDIR for determination of total organic carbon（TOC）in water.Methods：The sensitivity,accuracy,precision and analytical speed between ICP-AES and NDIR were compared.Results：The limit of detection was 0.6 mg/L（carbon） for ICP-AES and 0.1 mg/L（carbon）for NDIR.The linear correlation coefficients of both methods were 0.999 and the precisions（RSD）were less than 2%.The two methods were accurate and reliable and the values of TOC were in the range of CRM.There was no statistical difference for t-distribution between the sample results of ICP-AES and NDIR.Conclusion：The analytical performance parameter for ICP-AES is basically consistent with NDIR.The two methods are satisfactory to the determination of TOC in water.The analytical speed of ICP-AES is faster than NDIR and especially suit for high throughput samples.

关 键 词：有机碳 电感耦合等离子体发射光谱法 水 比对研究 

分 类 号：R123.1[医药卫生—环境卫生学]