文档介绍：第 20 卷
第 1 期兰州铁道学院学报( 自然科学版) Vol. 20 No. 1
2001 年 2 月 JOURNAL OF LANZHOU RAILWAY U NIVERS ITY ( Natural Sciences) Feb. 2001
Article ID: 1001- 4373( 2001) 01- 0073- 05
Measurement and Estimation of Water Solubility and
Octanol- Water Partition Coefficient for Benzene Substances
CHEN Hui,
YANG Rui- qiang,
ZHANG Zhang,
ZHOU Wen- jun,
JIANG Mei
( Institute of Chemistry and Chemical Engineering, Northw est Normal U niversity, Lanzhou
730070, C hina)
Abstract:Shake- flask gas- chromatography ( GC) method was utilized to measure water solubilit y ( S w) and n- octanol
w ater partit ion coefficient ( K ow) for benzene, toluene and ethylbenzene respectiv ely. T he results showed that S w and K ow
followed a linear relationship as lnK ow = 0. 455 8 - 0. 917 6lnS w. Additionally , the experimental v alues w ell agreed to
t hat calculated by structure informatio n estimation method ( Irmann method) and molar volume method ( M v method) .
Key words:so lubility ; partition coefficient; shake- flask method; Gas chromatography ; Benzene co mpounds
CLC number:X131. 3
Document code:A
1
Introduction
Aqueous solubility and n- octanol/ water partition coefficient have been w idely used to correlate w ith env-i
ronmental partitioning phenomena such as bioconcentration[ 1] and sorption[ 2, 3] . Data for both quantities are re-
g arded as being ess