絞り込み

16545

広告

「中国版GPS」衛星打ち上げ 成功の様子を公開

中国は19日、「中国版GPS」とも呼ばれるシステムに利用する衛星の打ち上げに成功し、その様子を一部の外国メディアに公開しました。宇宙分野の技術力の高まりをアピー...

  1. 【要指導・一般薬部会】鼻過敏症治療薬「フ...
  2. 【要指導・一般薬部会】鼻過敏症治療薬「フ...
  3. 【中国四国支部学術大会で報告】疑義照会簡...
  4. 12月13~14日に「第3回DIA再生医...

ニュース一覧

Determination of the distribution constants of aromatic compounds and steroids in biphasic micellar phosphonium ionic liquid/aqueous buffer systems by capillary electrokinetic chromatography.

著者 Lokajová J , Railila A , King AW , Wiedmer SK
J Chromatogr A.2013 Aug 6 ; ():.
この記事をPubMed上で見るPubMedで表示
この記事をGoogle翻訳上で見る Google翻訳で開く

Department of Chemistry, P.O. Box 55, 00014, University of Helsinki, Finland; Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, v.v.i. Flemingovo nám. 2, 166 10 Prague, Czech Republic.

スターを付ける スターを付ける     (267view , 0users)

Full Text Sources

The distribution constants of some analytes, closely connected to the petrochemical industry, between an aqueous phase and a phosphonium ionic liquid phase, were determined by ionic liquid micellar electrokinetic chromatography (MEKC). The phosphonium ionic liquids studied were the water-soluble tributyl(tetradecyl)phosphonium with chloride or acetate as the counter ion. The retention factors were calculated and used for determination of the distribution constants. For calculating the retention factors the electrophoretic mobilities of the ionic liquids were required, thus, we adopted the iterative process, based on a homologous series of alkyl benzoates. Calculation of the distribution constants required information on the phase-ratio of the systems. For this the critical micelle concentrations (CMC) of the ionic liquids were needed. The CMCs were calculated using a method based on PeakMaster simulations, using the electrophoretic mobilities of system peaks. The resulting distribution constants for the neutral analytes between the ionic liquid and the aqueous (buffer) phase were compared with octanol-water partitioning coefficients. The results indicate that there are other factors affecting the distribution of analytes between phases, than just simple hydrophobic interactions.
PMID: 23953616 [PubMed - as supplied by publisher]
印刷用ページを開く Endnote用テキストダウンロード