| 离子色谱法测定减水剂中硫酸钠含量 |
| |
| 引用本文： | 杨学灵,林瑛.离子色谱法测定减水剂中硫酸钠含量[J].广州化学,2012,37(3):5-9. |
| |
| 作者姓名： | 杨学灵 林瑛 |
| |
| 作者单位： | 中国科学院广州化学研究所,广东广州,510650 |
| |
| 摘 要： | 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％。
|
| 关 键 词： | 离子色谱法 硫酸钠 阴离子交换树脂 |
Ion Chromatography Determination of Sodium Sulfate in Water Reducing Agent |
| |
| YANG Xue-ling,LIN Ying.Ion Chromatography Determination of Sodium Sulfate in Water Reducing Agent[J].Guangzhou Chemistry,2012,37(3):5-9. |
| |
| Authors: | YANG Xue-ling LIN Ying |
| |
| Institution: | ( Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China) |
| |
| Abstract: | 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%. |
| |
| Keywords: | ion chromatography sodium sulfate anion exchange resin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
