Gas phase ion formation from a liquid beam of arginine in aqueous solution by IR multiphoton excitation
Gas phase ion formation from a liquid beam of arginine in aqueous solution by IR multiphoton excitation
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DOI：
10.1016/j.cplett.2005.10.118
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发表时间：
2006-03-10
影响因子：
2.8
通讯作者：
Kondow, T
中科院分区：
文献类型：
--
作者：
Kohno, JY;Toyama, N;Kondow, T
用3509 cm（-1）（2.85 μ m）的脉冲红外激光照射精氨酸（AH）、其盐酸盐（AH（2）Cl）和其钠盐（ANa）的水溶液的液体束。对喷射到气相中的正离子和负离子进行质量分析。从AH（2）Cl和ANa水溶液中，溶液中预先存在的离子被直接喷射到气相中。另一方面，从AH溶液中，在气相中观察到质子化精氨酸离子AH（2）（+）和精氨酸根离子A（-）。这些离子的产生是由于溶液中水分子的四光子激发。(c)2005 Elsevier B. V.保留所有权利。
A liquid beam of aqueous solutions of arginine (AH), its hydrochloric acid salt (AH(2)Cl) and its sodium salt (ANa) was irradiated with a pulsed IR laser at 3509 cm(-1) (2.85 mu m). Positive and negative ions ejected to the gas phase were mass analyzed. From the AH(2)Cl and the ANa aqueous solutions, the pre-existing ions in the solution were ejected directly to the gas phase. From the AH solution, on the other hand, both a protonated arginine ion, AH(2)(+) and an argininate ion, A(-) were observed in the gas phase. Production of these ions is accounted for the four-photon excitation of water molecules in the solution. (c) 2005 Elsevier B.V. All rights reserved.