期刊
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
卷 113, 期 -, 页码 379-391出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2018.04.016
关键词
Modulator Comprehensive two-dimensional gas chromatography; Multidimensional gas chromatography; Thermal modulation; Flow modulation; Valve modulation
One of the greatest advancements in the field of gas chromatography (GC) has been the development of comprehensive two-dimensional gas chromatography (GC x GC). As the field of GC evolved from one-dimensional gas chromatography (1D-GC) to heart cutting (GC-GC), followed by the advent of GC x GC, the critical component at the center of this evolution has been the interface between the separation columns. The interface, referred to as the modulator for GC x GC, links the primary and secondary columns. This review covers the evolution of modulator systems from the founding of GC x GC in 1991 by Liu and Phillips, while focusing on the last six years. Since its inception, modulators have evolved into two distinct categories: thermal, and valve-based. The advantages and shortcomings of each category will be covered. Recent developments in the research, development, and commercialization of these various modulators is provided, with a glimpse into future modulator designs. (C) 2018 Elsevier B.V. All rights reserved.
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