离子色谱法测定废气中硫酸雾的前处理方法的改进

摘要：根据HJ544—2009标准，废气中硫酸雾样品的前处理步骤为：加热浸出、经中速定量滤纸过滤、定容、过阳离子交换树脂柱、经0．45μm微孔滤膜抽滤。根据工作实践，可将前处理步骤简化为：加热浸出、经0．45μm微孔滤膜（已前处理）抽滤、定容、过阳离子交换树脂柱。实验结果表明，取消中速定量滤纸过滤这一步骤不会对硫酸根离子的测定产生影响；0．45μm微孔滤膜经前处理后可提高硫酸根离子的洗脱效率；过阳离子交换树脂枉和抽滤两个步骤互换不会对测定结果产生影响。

Ion Chromatographic Determination of Sulfuric Acid Mist in Gas Pretreatment Method Improvement

according to the HJ544-2009 standard, waste sulfuric acid mist in the sample pretreatment steps： heating leaching, the speed of quantitative filter paper filter, constant volume, cation exchange resin column, 0.45 μ m microporons membrane filtration. According to the working practice, can he simplified to： heating leaching processing steps, the 0,45μm micrnpomus membrane filtration （after treatment ）, constanl volume, cation exchange resin colunm. The experimental results show that, to cancel the medium-speed quantitative filter paper filter this step does not on the determination of sulfate ion impact; 0.45 μm microporous membrane after can improve the sulfate ion elution efficiency; cation exchange resin column and filtering step two swap will not influence on the results of Determination.