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Adaptive Two-Dimensional Microgas Chromatography

We proposed and investigated a novel adaptive two-dimensional (2-D) microgas chromatography system, which consists of one 1st-dimensional column, multiple parallel 2nd-dimensional columns, and a decision-making module. The decision-making module, installed between the 1st- and 2nd-dimensional columns, normally comprises an on-column nondestructive vapor detector, a flow routing system, and a computer that monitors the detection signal from the detector and sends out the trigger signal to the flow routing system. During the operation, effluents from the 1st-dimensional column are first detected by the detector and, then, depending on the signal generated by the detector, routed to one of the 2nd-dimensional columns sequentially for further separation. As compared to conventional 2-D GC systems, the proposed adaptive GC scheme has a number of unique and advantageous features. First and foremost, the multiple parallel columns are independent of each other. Therefore, their length, stationary phase, flow rate...

Authors:   Jing Liu; Maung Kyaw Khaing Oo; Karthik Reddy; Yogesh B. Gianchandani; Jack C. Schultz; Heidi M. Appel; Xudong Fan
Journal:   Analytical Chemistry
Year:   2012
DOI:   10.1021/ac300588z
Publication date:   10-Apr-2012
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