Arid
DOI10.1016/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
ISSN0021-9673
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.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Cullere, Laura]的文章
[Bueno, Monica]的文章
[Cacho, Juan]的文章
百度学术
百度学术中相似的文章
[Cullere, Laura]的文章
[Bueno, Monica]的文章
[Cacho, Juan]的文章
必应学术
必应学术中相似的文章
[Cullere, Laura]的文章
[Bueno, Monica]的文章
[Cacho, Juan]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。