水相滤膜在离子色谱分析中应用的研究

Study on application of membrane filters in ion chromatography

〔目的〕为了解水相滤膜对离子色谱分析是否有影响。〔方法〕本文以F-,Cl-,NO-3 和SO2 -4,作为检验项目 ,用离子色谱法分析了市场上一些水相滤膜的四种阴离子含量。〔结果〕列出的几种滤膜均含有一定量的F-,Cl-,NO-3 和SO2 -4。〔结论〕在用水相滤膜前要多次清洗 ,才能使它对离子色谱分析的影响降到最低程度。

睴bjective〕 To know if the membrane filter of water-phase has an effect on the analysis in Ion-Chromatography.〔Methods〕We selected F -,Cl -,NO - 3 and SO 2- 4 as test parameter and studied the concentration of four anions in it by Ion-Chromatogrph〔Rresults〕It found that some membrane filters listed all have F -,Cl -,NO - 3 and SO 2- 4.〔Conclusion〕To reduce the effect, we should wash the membrane filter a few times before analyse the water sample.