P2.9.20 Utilization of GC and Temporal Selection of Multisensor intended for Quantitative Analysis of Mixed Gas
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.9 Technology and Application
- D. Wang, K. Yu, Y. Wang, C. Zhao, L. Wang, X. Zhang, Y. Zou, P. Wang - Biosensor National Special Lab, Key Lab for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University (P.R. China)
- 1757 - 1760
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 is compared with two other kinds of multi-sensor systems. The results show that this new approach can quantitatively detect various target analytes in a complex gas sample with a relatively low detection limit.