离子色谱法电导检测同时测定海水中硝酸盐、磷酸盐、硫酸盐等多种阴离子  

Anion Chromatographic Method with Suppressed Conductance Detector for Simultaneous Determination of NO_3-,PO_4^(3-),SO_4^(2-) and other Anions in Seawater

作　　者：顾海宁[1] 王慕华[1] 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40-42,共3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抑制电导检测器的方法 ,采用DionexIonpicAS9HC (2mm) ,以 0 .2 5mL/min流速的 9mmol/LNa2 CO3 作为淋洗液 ,在高氯化钠的含量条件下 ,同时成功地分离和检测痕量的硝酸盐、磷酸盐和非痕量的溴盐、硫酸盐 ,各离子在抑制电导检测下有很好的线性 ,检测下限分别为 :NO3-0 .314μg/mL ,PO4 3 -0 .2 39μg/mL ,Br-0 .111μg/mL及SO4 2 -0 .181μg/mL。对不同地区的海水进行测定 ,其回收率为 78%至 117%。An ion chromatographic method with suppressed conductance detector for the simultaneous separation and determination of NO 3 -,PO 4 3- ,Br -and SO 4 2- in the high content of NaCl. Separation was performed on a Dionex Ionpci AS9-HC 2mm column by using 9mmol Na 2CO 3 as eluent. Good linearities of the concentrations of all and relevant peak area responses were achieved.The detection limits were 0.314μg/mL for NO 3 -,0.239μg/mL for PO 4 3- ,0.111μg/mL for Br -and 0.181μg/mL for SO 4 2- by suppressed conductance detection.The method has been successfully applied to seawater in different regions,and the average recoveries for variousions ranged from 78% to 117%.

关 键 词：离子色谱法 抑制电导检测 海水 阴离子测定 

分 类 号：X834[环境科学与工程—环境工程]