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DOI | 10.1016/j.chroma.2010.01.002 |
Selectivity and efficiency of different reversed-phase and mixed-mode sorbents to preconcentrate and isolate aroma molecules | |
Cullere, Laura; Bueno, Monica; Cacho, Juan; Ferreira, Vicente | |
通讯作者 | Cullere, Laura |
来源期刊 | JOURNAL OF CHROMATOGRAPHY A
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ISSN | 0021-9673 |
出版年 | 2010 |
卷号 | 1217期号:10页码:1557-1566 |
英文摘要 | A comparison of the ability of different sorbent systems. including mixed-mode resins and reversed-phase sorbents, to extract and isolate volatile molecules from hydroalcoholic medium has been carried Out by means of the determination of liquid-solid distribution coefficients. Eighteen volatile compounds covering a wide range of physicochemical properties (acids, bases and neutrals) and chemical functionalities, and thirteen different sorbents have been tested. LiChrolut EN and Isolute ENV (both polymeric with high surface area) showed the highest retention capability for nearly all analytes at all pHs tested. Exceptions were 2,3,5-trimethylpyrazine, most efficiently extracted with Strata XC at acidic pH, and indole best retained with Oasis MCX and Strata XC at any pH. Although nearly all basic compounds were most selectively extracted with cationic mixed-mode resins at acid pHs and 3-mercaprohexyl acetate and m-cresol show maxima alpha at pH 10 with Oasis MAX, the alpha values obtained have been relatively low, which suggests that retention is not particularly driven by ionic forces. The study has also shown that selectivity depends on the pH, the exact kind of mixed-mode sorbent and on the polarity of the analyte. High selectivity towards ionogenic compounds can be obtained by combining retention in mixed mode, a rinsing with a non-polar solvent and further elution with a solvent containing a neutralizing agent. However, not all the ionogenic molecules seem to be retained in ionic mode in the conditions tested and the complete elution of some analytes can be difficult, which suggests that analyte-specific isolation procedures should be analyzed case by case. (C) 2010 Elsevier B.V. All rights reserved. |
英文关键词 | Solid-phase extraction Mixed-mode resins Distribution coefficient Selective isolation Volatile compounds |
类型 | Article |
语种 | 英语 |
国家 | Spain |
收录类别 | SCI-E |
WOS记录号 | WOS:000275132500002 |
WOS关键词 | CHROMATOGRAPHY-MASS-SPECTROMETRY ; GAS-CHROMATOGRAPHY ; QUANTITATIVE-DETERMINATION ; POLYFUNCTIONAL MERCAPTANS ; EXTRACTION PROCEDURE ; VOLATILE COMPOUNDS ; BASIC DRUGS ; WINE ; COLUMN ; LEVEL |
WOS类目 | Biochemical Research Methods ; Chemistry, Analytical |
WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/165050 |
作者单位 | Univ Zaragoza, Fac Sci, Dept Analyt Chem, E-50009 Zaragoza, Spain |
推荐引用方式 GB/T 7714 | Cullere, Laura,Bueno, Monica,Cacho, Juan,et al. Selectivity and efficiency of different reversed-phase and mixed-mode sorbents to preconcentrate and isolate aroma molecules[J],2010,1217(10):1557-1566. |
APA | Cullere, Laura,Bueno, Monica,Cacho, Juan,&Ferreira, Vicente.(2010).Selectivity and efficiency of different reversed-phase and mixed-mode sorbents to preconcentrate and isolate aroma molecules.JOURNAL OF CHROMATOGRAPHY A,1217(10),1557-1566. |
MLA | Cullere, Laura,et al."Selectivity and efficiency of different reversed-phase and mixed-mode sorbents to preconcentrate and isolate aroma molecules".JOURNAL OF CHROMATOGRAPHY A 1217.10(2010):1557-1566. |
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