广州化学
廣州化學
엄주화학
GUANGZHOU CHEMISTRY
2012年
3期
5-9
,共5页
离子色谱法%硫酸钠%阴离子交换树脂
離子色譜法%硫痠鈉%陰離子交換樹脂
리자색보법%류산납%음리자교환수지
ion chromatography%sodium sulfate%anion exchange resin
建立了离子色谱法测定减水剂中硫酸钠含量的方法。减水剂试样溶于水中，采用201×7（717）强碱性阴离子交换树脂去除溶液中的有机物，进样量为20μL。在Metrosep A SUPP 5-250型阴离子分离柱上，以3．2mmol／L Na2CO3和1．0mmol／L NaHCO3混合溶液作为淋洗液，抑制型电导检测，以0．6mL/min流量洗脱，按峰面积定量。方法检出限（3S／N）为0．05mg／L。用标准加入法，以实体为基体进行回收试验，测得回收率为96．3％～104．3％。
建立瞭離子色譜法測定減水劑中硫痠鈉含量的方法。減水劑試樣溶于水中，採用201×7（717）彊堿性陰離子交換樹脂去除溶液中的有機物，進樣量為20μL。在Metrosep A SUPP 5-250型陰離子分離柱上，以3．2mmol／L Na2CO3和1．0mmol／L NaHCO3混閤溶液作為淋洗液，抑製型電導檢測，以0．6mL/min流量洗脫，按峰麵積定量。方法檢齣限（3S／N）為0．05mg／L。用標準加入法，以實體為基體進行迴收試驗，測得迴收率為96．3％～104．3％。
건립료리자색보법측정감수제중류산납함량적방법。감수제시양용우수중，채용201×7（717）강감성음리자교환수지거제용액중적유궤물，진양량위20μL。재Metrosep A SUPP 5-250형음리자분리주상，이3．2mmol／L Na2CO3화1．0mmol／L NaHCO3혼합용액작위림세액，억제형전도검측，이0．6mL/min류량세탈，안봉면적정량。방법검출한（3S／N）위0．05mg／L。용표준가입법，이실체위기체진행회수시험，측득회수솔위96．3％～104．3％。
Ion chromatography was applied to the determination of sodium sulfate (as SO42) in water reducing agent. The water reducing agent was dissolved in water. 201×7(707) strongly basic anion exchange resin was used to remove organic substances from the sample solution. An aliquot (20 μL) of the eluate from 201×7(707) strongly basic anion exchange resin was taken for IC determination. The Metrosep A SUPP 5-250 column was used for separation, 3.2 mmol/L Na2CO3 and 1.0 mmol/L NaHCO3 solutions were used as mobile phase with flow-rate of 0.6 mL/min, and SO42- ion was determined by suppressed conductance detection through measuring values of peak area. Detection limit (3S/D) found was 0.05 mg/L. Values of recovery found by standard addition method were in the range from 96.3%- 104.3%.
