http://dx.doi.org/10.1080/00032719.2011.553013">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Dual fiber-in-capillary annular column with ternary stationary phase for gas chromatographic separation

Language

English

Abstract

In the present work a novel strategy for improving and/or tuning the selectivity of gas chromatographic (GC) separation by combining three different stationary phases (SPs) without premixing was introduced. A fused silica fiber coated with polydimethylsiloxane (SE30) and another coated with cyanopropylphenylmethylpolysiloxane (OV1701) were serially inserted into an 8-m polyethylene glycol 20 M (PEG20M) capillary column to form a GC annular column with ternary SP, abbreviating as SE30-OV1701-CF/PEG20M-CC. The separation capability of this ternary SP annular column was compared with a SE30-coated fiber-in-PEG20M-coated capillary annular column and a PEG20M-coated open tubular column by a test mixture of 19 organic compounds. Among these three columns, SE30-OV1701-CF/PEG20M-CC produced the best separation when the SE30-coated fiber and OV1701-coated fiber was 3 and 5 m, respectively. Selectivity can be easily tuned by changing the length of the SP-coated fibers in the ternary SP annular column. The proposed ternary SP annular column shows additional tunability, thus making it a promising tool for separation of organic solvents that are often used in the manufacturing process of pharmaceutical formulations and lacquer thinners. © 2011 Copyright Taylor and Francis Group, LLC.

Keywords

Dual fiber, Gas chromatography, Selectivity, Ternary stationary phase

Publication Date

2011

Source Publication Title

Analytical Letters

Volume

44

Issue

16

Start Page

2721

End Page

2731

Publisher

Taylor & Francis

ISSN (print)

00032719

ISSN (electronic)

1532236X

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