离子色谱法紫外测定海水中亚硝酸盐、硝酸盐、溴盐阴离子
原文:袁丽霞, 顾海宁, 王慕华, 沈星, 陈朝晖, 蒋银土, 朱京平, 朱岩
现代分析仪器 2000年5期
离子色谱法紫外测定海水中亚硝酸盐、硝酸盐、溴盐阴离子
袁丽霞 顾海宁 王慕华 沈星 陈朝晖 蒋银土 朱京平 朱岩
(浙江大学西溪校区应化所 杭州 310028)
摘要:本文报道利用
离子色谱法结合紫外检测的方法,采用Dionex Ionpic AS9HC(2mm),以0.25mL/min流速的9mol/L NaCO3作为淋洗液,在高氯化钠含量条件下,同时成功的分离和检测痕量的亚硝酸盐、硝酸盐和非痕量的溴盐。各离子在紫外检测条件下有很好的线性,其检测下限分别为NO2- 0.170μg/mL,NO3- 0.081μg/mL,Br- 0.048μg/mL。对不同地区的海水进行测定,其回收率在74%至103%。
关键词:
离子色谱法;紫外检测;海水
中图分类号:X834 文献标识码:B 文章编号:1003-8892(2000)06-0043-02
Anion Chromatographic Method with UV Absorbance Detector for SimultaneousDetermination of NO2-,NO3- and Br- in Seawater
Yuan Lixia Gu Haining Wang Muhua Shen Xing Chen Zhaohui Jiang Yintu
Zhu Jingpin Zhu Yan
(Department of Chemistry,Zhejiang University HangZhou 310028)
Abstract:An ion chromatographic method with UV absorbance detector for the simultaneous separation and determination of NO2-,NO3-,Br- in the high content of NaCl. Separation was performed on a Dionpic Ionpic AS9-HC2mm column by using 9mol Na2CO3 as eluent. Good linearities of the concentrations of all and relevant peak area responses were achieved. The detection limits were 0.170μg/mL for NO2-,0.081μg/mL for NO3-,0.048μg/mL for Br- by absorbance detection. The method has been successfully applied to seawater in different regions,and the average recoveries for various ions ranged from 74% to 103%.
Key words:Ion chromatography;absorbance detection;seawater
摘录:dujinx
(发表时间:2001-5-17 22:28:11