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学科主题: Engineering, Chemical
题名: Water solubility enhancement of phthalates by cetyltrimethylammonium bromide and beta-cyclodextrin
通讯作者: Li, A, Univ Illinois, Sch Publ Hlth, Chicago, IL 60612 USA
关键词: POLYAROMATIC HYDROCARBONS ; ORGANIC-COMPOUNDS ; SURFACTANTS ; ESTERS ; BIODEGRADATION ; ENVIRONMENT ; SORPTION ; SOLUTES ; SYSTEMS ; SOIL
刊名: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
发表日期: 2003
卷: 42, 期:5, 页:949-955
收录类别: SCI
部门归属: Univ Illinois, Sch Publ Hlth, Chicago, IL 60612 USA; Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
摘要: Water solubility enhancements of six phthalates (five aliphatic phthalates and one phenyl phthalate) by cetyltrimethylammonium bromide (CTAB) and beta-cyclodextrin (beta-CD) were studied at 25 degreesC. The solubilities of these plithalates are remarkably enhanced by CTAB solutions above the critical micelle concentration (cmc). Only marginal enhancement of phthalate solubility was observed in solutions containing CTAB below its cmc and beta-CD at low concentrations (less than 5 mM). The solubility enhancements of the plithalates are proportional to the added amount of CTAB and beta-CD. Partition coefficients of the plithalates between monomeric CTAB surfactant and water (K-MN) and between CTAB micelle and water K-MC) were estimated from the experimental data. The mechanisms of solubility enhancements by CTAB and beta-CD were discussed. A log-linear equation was proposed and evaluated for the solubilization by CTAB below cmc, while the previously proposed linear partitioning model was questioned. The structures of the complexes formed between plithalates and beta-CD were proposed, and the formation constants were estimated. The values of log K-MC, log K-MN, and log Kbeta-CD of the plithalates were found to correlate linearly with the log K-OW of plithalates, with the exception of the solid phenyl phthalate.
语种: 英语
WOS记录号: WOS:000181302700002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9734
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Recommended Citation:
.Water solubility enhancement of phthalates by cetyltrimethylammonium bromide and beta-cyclodextrin,INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2003,42(5):949-955
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