P2.9.20 Utilization of GC and Temporal Selection of Multisensor intended for Quantitative Analysis of Mixed Gas

D. Wang, K. Yu, Y. Wang, C. Zhao, L. Wang, X. Zhang, Y. Zou & P. Wang
A new multi-sensors gas detection method for quantitative analysis of mixed gas is described. The system includes a Tenax tube and a capillary column to pre-concentrate and separate gas sample. A heated multi-position valve is used to successively lead the separated sample segments into different sensor chambers or to waste outlet. For each target analyte, the most sensitive sensor would be selected without considering the specificity. The system is calibrated by 5 VOCs, and then...