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利用离子色谱法同时检测饮用水中的F-、Cl-、NO2-N、NO3-N、SO42-,采用Ion-PacAS19-HC(4mm×250mm)阴离子分析柱、ASRS-ULTRAII4mm阴离子自动电解再生膜抑制器,在线产生20.0mmolKOH淋洗液,流速为1.00mL/min,进样量为25.0μL,柱温为30℃,检测池温度为35℃,抑制器电流为70mA,一次进样同时检测水中的F-、Cl-、NO2-N、NO3-N、SO42-,测定结果的相对标准偏差均小于3.0%,加标回收率在99.7%～102%之间,能在15min内完成分析,简捷、快速,线性范围宽,检测结果准确可靠。
ASRS-ULTRAII4mm anion automatic electrolytic regenerating membrane was prepared by ion chromatography with ion-PacAS19-HC (4mm × 250mm) anion analytical column for simultaneous determination of F-, Cl-, NO2-, NO3- and SO42- in drinking water Suppressor, 20.0 mmol KOH eluent was generated online with a flow rate of 1.00 mL / min, an injection volume of 25.0 μL, a column temperature of 30 ° C., a cell temperature of 35 ° C. and a suppressor current of 70 mA. The relative standard deviations (RSDs) of F-, Cl-, NO2-N, NO3-N and SO42- were all less than 3.0% and the recoveries were within the range of 99.7% -102% , Fast, linear range, accurate and reliable test results.