The Henry's law coefficient of 2-nitrophenol over the temperature range 278-303 K

被引：16

作者：

Müller, B ^{[1
]}

Heal, MR ^{[1
]}

机构：

[1] Univ Edinburgh, Dept Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

来源：

CHEMOSPHERE | 2001年 / 45卷 / 03期

关键词：

2-nitrophenol; gas-to-liquid partitioning; bubble column;

D O I：

10.1016/S0045-6535(00)00592-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Although 2-nitrophenol has been identified as an important environmental chemical there is scarcity in the literature regarding the temperature dependence of its Henry's law coefficient, H. Here a bubble purge method was used to measure H for 2-nitrophenol over the temperature range 278-303 K. A novel approach in the data treatment allowed correction of the data for non-equilibrium partitioning in the apparatus to obtain the true equilibrium H value. The experimentally derived temperature-dependent expression for H of 2-nitrophenol is In H (M atm(-1)) = (6290/T (K)) -16.6. The standard enthalpy and entropy of gas-to-liquid transfer for 2-nitrophenol in aqueous solution are 52.3 +/- 8.1 kJ mol(-1) and -138 +/- 28J mol(-1) K-1, respectively. (Errors are 95% confidence intervals.) (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：309 / 314

页数：6

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