Organic compounds in radiation fogs in Davis (California)

被引：60

作者：

Herckes, P

Hannigan, MP

Trenary, L

Lee, T

Collett, JL ^{[1
]}

机构：

[1] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA

[2] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA

来源：

ATMOSPHERIC RESEARCH | 2002年 / 64卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

organic matter; cloud chemistry; fog chemistry; solubility;

D O I：

10.1016/S0169-8095(02)00083-2

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

New stainless steel active fogwater collectors were designed and used in Davis (CA, USA) to collect fogwater for the speciation of organic matter. Organic compounds in fog samples were extracted by liquid-liquid extraction and analyzed by gas chromatography coupled to mass spectrometry. Numerous organic compounds, including various alkanes, polycyclic aromatic hydrocarbons (PAH) and alkanoic acids, have been identified in the fogwater samples. Higher molecular weight (MW) compounds are preferentially associated with an insoluble phase inside the fog drops, whereas lower molecular weight and more polar compounds are found predominantly in the dissolved phase. Concentrations in the dissolved phase were sometimes much higher than estimated by the compounds' aqueous solubilities. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：99 / 108

页数：10

共 14 条

[1] Cloud chemistry varies with drop size [J].