Aqueous solubilities of non-ortho and mono-ortho PCBs at four temperatures.
Aqueous solubilities of non-ortho and mono-ortho PCBs at four temperatures.
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非邻位和单邻位 PCB 在四种温度下的水溶解度。
DOI:
10.1016/s0043-1354(02)00071-4
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发表时间:
2002
期刊:
影响因子:
12.8
通讯作者:
Hong,Chia-Swee
中科院分区:
文献类型:
--
作者:
Huang,Qingdong;Hong,Chia-Swee
The temperature-dependent aqueous solubilities of 12 non-ortho and mono-ortho coplanar PCBs (IUPAC Nos. 77, 81, 105, 114, 118, 123, 126, 156, 157, 167, 169, and 189) were determined at 5°C, 15°C, 25°C, and 35°C. A generator-column/extractor-column technique was used, followed by off-line GC/ECD analysis. The relative standard deviations for the measurements were ⩽7.4%. The determined solubilities increase exponentially with temperature from 5°C to 35°C for all 12 tested PCBs, and their enthalpies of solution were determined to range from 22.3 to 45.0kJ/mol. The determined solubilities of PCB 77 at 25°C were further compared with the results reported previously and with the calculated data. Within homolog groups, congeners with more ortho-substitution generally have greater aqueous solubilities. The measured aqueous solubilities of 58 congeners compiled from the literature and from this study were used for evaluation of quantitative structure-property relationships relating chlorine substitution pattern to the aqueous solubilities. A useful equation by which to estimate aqueous solubilities was derived on the basis of multi-regression analysis, which employs easily calculable molecular descriptors. The validity of this equation is demonstrated by comparison of the estimated values with experimental values. This newly developed model agrees well with logKow-based model predictions.
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影响因子:
7.4
作者:
W. May;S. Wasik;D. H. Freeman
通讯作者:
D. H. Freeman
影响因子:
8.8
作者:
S. Ayris;Gian Marco Currado;David N. Smith;S. Harrad
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S. Harrad
影响因子:
8.8
作者:
Hong,CS;Qiao,H
通讯作者:
Qiao,H
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
Lawrence M. Smith;T. Schwartz;K. Feltz;T. Kubiak
通讯作者:
T. Kubiak
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
A. Opperhuizen;F. Gobas;J. Van der Steen;O. Hutzinger
通讯作者:
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