文章摘要
朱敏,胡雅琴.碳酸根离子对离子色谱法测定废气中硫酸雾的干扰及其消除[J].安徽建筑大学学报,2015,23(1):52-56
碳酸根离子对离子色谱法测定废气中硫酸雾的干扰及其消除
The elimination of the interference of CO32- with sulfuric acid mist in flue gas determined by ion chromatography
  
DOI:10.11921/j.issn.2095-8382.20150112
中文关键词: 硫酸雾  离子色谱法  淋洗液浓度
英文关键词: sulfuric acid mist  Ion chromatography  eluent concentration
基金项目:
作者单位
朱敏 安徽省环境监测中心站安徽 合肥 230071 
胡雅琴 安徽省环境监测中心站安徽 合肥 230071 
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中文摘要:
      本论文研究了离子色谱法测定硫酸雾含量时,不同浓度的淋洗液KOH对消除碳酸根离子干扰测量结果的影响。结果表明:在流量1.0ml/min,柱温30℃,进样体积25µl条件下,选择14mmol/LKOH作为淋洗液,抑制电流为48mA, 可以明显改善碳酸根对硫酸根的干扰。两个质量浓度水平标准溶液加标回收率为98.4%~100.1%,样品平行测定的精密度为0.59%,采样体积为400L时,方法检出限为0.08mg/m3。
英文摘要:
      The effects of different concentrations of KOH on interferences of CO32- with sulfuric acid mist were studied by ion chromatography. The results showed that CO32- and SO42- were separated obviously when 14mmol/L KOH as an eluent,48mA of the electric current, and 1.0ml/min the flow rate, 30℃ the column temperature,and 25µl of injection volume , respectively. In this condition, the recovery rates of SO42- of two standard samples were ranged from 98.4% to 100.1%. RSD was 0.59%. When the sampling volume was 400L, the detection limit was 0.08mg/m3.
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