不同材质滤膜对硫酸雾测定的影响

Effects on Determination of Sulfuric Acid Mist by Different Filter Membrane

硫酸雾测定中,滤膜的选择至关重要,玻璃纤维滤膜需要进行浸泡前处理,费时费力且处理后的数据偏差很大;石英滤膜不需要前处理,但价格昂贵;聚丙烯纤维滤膜价格适中,且不需要进行前处理。通过对实际样品测定效果进行对比,表明聚丙烯纤维滤膜完全可以取代玻璃纤维滤膜和石英滤膜。

The choice of filter membrane is very important in sulfuric acid mist determination.Fiberglass filter membrane needs to be pretreated before soaking immersion,which is time-consuming and laborious,and the data deviation after treatment is very large.Quartz filter membrane does not need pretreatment,but it is expensive.Polypropylene filter membrane is moderate in price and does not need pretreatment.Compared with the actual samples,the polypropylene filter membrane can completely replace the fiberglass filter membrane and the quartz filter membrane.