Measurements of the Henry's law coefficients of 2-methyl-3-buten-2-ol, methacrolein, and methylvinyl ketone

被引：45

作者：

Iraci, LT ^{[1
]}

Baker, BM

Tyndall, GS

Orlando, JJ

机构：

[1] Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80307 USA

[2] Natl Ctr Atmospher Res, Adv Study Program, Boulder, CO 80307 USA

来源：

JOURNAL OF ATMOSPHERIC CHEMISTRY | 1999年 / 33卷 / 03期

基金：

美国国家科学基金会;

关键词：

Henry's law constant; partition coefficient; methylbutenol; methacrolein; 2-methyl-2-propenal; methyl vinyl ketone; 3-buten-2-one;

D O I：

10.1023/A:1006169029230

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Using an equilibrium headspace technique, Henry's law coefficients were measured for methacrolein (H = 6.5 +/- 0.7 M atm(-1)) and methylvinyl ketone (41 +/- 7.0 M atm(-1)) in water at 25 degrees C. In addition, 2-methyl-3-buten-2-ol was studied at 30 degrees C in water and in an aqueous ionic solution representative of plant tissue. Similar values were found in deionized water (65 +/- 3.5 M atm(-1)) and in a 0.05 mol kg(-1) Ca2+, K+, NO3-, SO42- solution (62 +/- 0.8 M atm(-1)). These Henry's Law coefficients are too small to allow for significant partitioning of methacrolein, methylvinyl ketone or methylbutenol into cloud water under equilibrium conditions.

引用

页码：321 / 330

页数：10

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