Activation of sub 2 nm Water Soluble and Insoluble Standard Ions with Saturated Vapors of Butanol in a Boosted TSI Ultrafine CPC.
Activation of sub 2 nm Water Soluble and Insoluble Standard Ions with Saturated Vapors of Butanol in a Boosted TSI Ultrafine CPC.
复制标题
在升压 TSI 超细 CPC 中用饱和丁醇蒸汽活化亚 2 nm 水溶性和不溶性标准离子。
作者：
M. Attoui;J. Kangasluoma
四庚基溴化铵（THABr）、四丁基溴化铵（TBABr）和四乙基溴化铵（TEABr）溶解在甲醇或水甲醇混合物（~ 1 mM）中，通过正电喷雾雾化和高分辨率分类电分类产生单电荷的标准清洁离子（单体和二聚体）。THABr是疏水性的，不溶于水，TBABr和TEABr是吸湿性的，溶于水（分别为0.6和2.8 kg/l）。这些离子被用来研究吸湿性对激活的气溶胶颗粒在2纳米以下的范围内，通过一个增强的超细TSI冷凝颗粒计数器（3025 A）的检测效率测量的影响。颗粒的水溶性似乎在CPC（冷凝颗粒计数器）中与丁醇蒸汽的活化和生长中起作用，与颗粒的大小无关。
Tetraheptylammonium bromide (THABr), tetrabutylammonium bromide (TBABr) and tetraethylammonium bromide (TEABr) dissolved in methanol or water methanol mixtures (~ 1mM) produce via positive electrospray atomization and high resolution classification electrical classification standard clean ions (monomer and dimer) which are singly charged. THABr is hydrophobic and insoluble in water, TBABr and TEABr are hygroscopic and water soluble (0.6 and 2.8 kg/l respectively). These ions are used to study the effect of hygroscopicity on the activation of aerosol particles in the sub 2 nm range via the detection efficiency measurement of a boosted ultrafine TSI condensation particle counter (3025A). Water solubility of particles seems to play a role in the activation and growth with butanol vapor in the CPC (condensation particle counter) independently of the size.