Gas phase reactions of CF3O- and CF3O-H2O with nitric, formic, and acetic acid

被引：20

作者：

Amelynck, C ^{[1
]}

Schoon, N ^{[1
]}

Arijs, E ^{[1
]}

机构：

[1] Belgian Inst Space Aeron, B-1180 Brussels, Belgium

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2000年 / 203卷 / 1-3期

关键词：

chemical ionization; ion/molecule reactions; stratospheric trace gases; nitric acid; carboxylic acids;

D O I：

10.1016/S1387-3806(00)00321-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The reactions of CF3O-, CF3O-H2O and CF3O-HF with HNO3, HCOOH, and CH3COOH have been studied at room temperature in a Rowing afterglow instrument. Apart from the reaction of CF3O-HF with CH3COOH. all reactions proceed at the collision rate. Bare CF3O- ions react with the three acids mainly by fluoride transfer. An unambiguous identification of the reaction mechanisms of CF3O-H2O and CF3O-HF with the three neutral reactants is difficult to assess. The possibility to perform in situ measurements of HNO3, HCOOH. and CH3COOH concentrations in the atmosphere by chemical ionization mass spectrometry (CIMS). using a CF3O- ion source will be discussed. (C) 2000 Elsevier Science B.V.

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收藏

页码：165 / 175

页数：11

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