离子色谱法紫外测定海水中亚硝酸盐、硝酸盐、溴盐阴离子  

Anion Chromatographic Method with UV Absorbance Detector for Simultaneous Determination of NO_2^-,NO_3^-and Br^- in Seawater

作　　者：袁丽霞[1] 顾海宁[1] 王慕华 沈星 陈朝晖 蒋银土 朱京平 朱岩 

机构地区：[1]浙江大学西溪校区应化所,杭州310028

出　　处：《现代科学仪器》2000年第6期43-44,共2页Modern Scientific Instruments

基　　金：浙江省自然科学基金及分析测试基金资助

摘　　要：本文报道利用离子色谱法结合紫外检测的方法 ,采用DionexIonpicAS9HC(2mm) ,以 0 .2 5mL/min流速的9mol/LNaCO3 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 .170 μg/mL ,NO3-0 .0 81μg/mL ,Br-0 .0 48μg/mL。对不同地区的海水进行测定 ,其回收率在 74%至 10 3%。An ion chromatographic method with UV absorbance detector for the simultaneous separation and determination of NO 2 -,NO 3 -,Br - in the high content of NaCl. Separation was performed on a Dionpic Ionpic AS9-HC2mm column by using 9mol Na 2CO 3 as eluent. Good linearities of the concentrations of all and relevant peak area responses were achieved. The detection limits were 0.170μg/mL for NO 2 -,0.081μg/mL for NO 3 -,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%.

关 键 词：离子色谱法 紫外检测 海水 阴离子测定 硝酸盐 

分 类 号：X834[环境科学与工程—环境工程]