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%.
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
