Experimentally determined Henry's law constants for 17 polychlorobiphenyl congeners

被引：0
|
作者：
Dunnivant, F.M. [1 ]
Coates, J.T. [1 ]
Elzerman, A.W. [1 ]
机构：
[1] Environmental Systems Engineering, Clemson University, Clemson, SC 26934-0919, United States
来源：
Environmental Science and Technology | 1988年 / 22卷 / 04期
关键词：
CHEMICAL ANALYSIS - CHEMICAL REACTIONS - Testing;
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学科分类号：
摘要：
Henry's law constants (HLCs) have been experimentally determined for 17 polychlorobiphenyl (PCB) congeners by a gas-purging technique, with results ranging from 0. 3 multiplied by 10** minus **4 to 8. 97 multiplied by 10** minus **4 atm multiplied by (times) m**3/mol and an average value of 3. 53 multiplied by 10** minus **4 atm multiplied by (times) m**3/mol for the congeners studied. The experimental results are in good agreement with previously published values. For the entire group of congeners studied, measured HLCs were not correlated with molecular weight but did appear directly related to chlorine substitution pattern. Increasing HLCs coincided with greater degrees of ortho-chlorine substitution within a molecular weight class. This trend may be useful to relate individual HLCs to chlorine substitution patterns for the remaining PCB congeners.
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页码：448 / 453
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