Observation of nitrate ions at the air/water interface by UV-second harmonic generation

被引：61

作者：

Otten, Dale E. ^{[1
]}

Petersen, Poul B. ^{[1
]}

Saykally, Richard J. ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 449卷 / 4-6期

基金：

美国国家科学基金会;

关键词：

LIQUID WATER-SURFACE; MOLECULAR-DYNAMICS SIMULATIONS; VIBRATIONAL SPECTROSCOPY; AQUEOUS INTERFACES; SALT-SOLUTIONS; ANION; SOLVATION; CHEMISTRY; CLUSTERS; FORCES;

D O I：

10.1016/j.cplett.2007.10.081

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nitrate ions have been observed by resonant second harmonic generation in the air/water interface of sodium nitrate solutions when the nitrate mole fraction exceeds similar to 0.02 at ambient conditions. The surface propensity of nitrate is weak compared to those of other small anions determined by the same methodology, in qualitative agreement with recent simulations, experiments, and the position of nitrate in the Hofmeister anion series. The presence of nitrate ions in the interface of aqueous solutions has potential implications for chemical processes occurring in both natural and anthropogenic aqueous systems. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：261 / 265

页数：5

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