Research of Odor Detecting Method Using Micro-Fluid Chip and its Experiments

Abstract:

A kind of online or portable online odor detector is needed for continuously monitoring the concentration and tracing the source of the odor which is one of the atmosphere pollution. Combining gas chromatograph (GC) and micro-fluidic chip technology, we present a kind of odor detecting system which using micro-fluidic chip for gas separator and photo ionization detector (PID) for sensor. The 115×60×6mm micro-fluidic chip, etched a micro channel of 1mm diameter and 1.8m length inside, is filled by polyethylene glycol as stationary phase according to the type and character of odor. Respectively using micro-fluidic chip and stainless steel packed columns, the acetone detecting experiments prove that corresponding values of the theoretical plates numbers are 2156 and 1250, in addition, the values of their tailing factor are 1.20 and 1.33. The separation experiment between acetone and ethyl alcohol in the chip illustrate the degree of separation is 3.1.

• Periodical: Advanced Materials Research (Volumes 1010-1012)
• Pages: 446-451
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1010-1012.446
• Online since: August 2014
• Authors: Xu Zhang, Wei Zhou, Si Xiang Zhang, Xin Ying Yang, Jing Meng Cheng, Li Suo Gu, Li Bing Liu*
• Keywords: Column, Degree of Separation, Gas Chromatograph, Micro-Fluidic Chip, Odor, Tailing Factor, Theoretical Plate Number

References

[1] S. Zampolli, I. Elmi, J. Sturmann, et al. Selectivity enhancement of metal oxide gas sensors using a micro machined gas chromatographic column. Sens. Actuators B, 2005, 105: 400-406.

DOI: 10.1016/j.snb.2004.06.036

[2] S. Zampolli, I. Elmi, J. Sturmann, et al. Real-time monitoring of sub-ppb concentrations of aromatic volatiles with a MEMS-enabled miniaturized gas-chromatograph. Sens. Actuators B, 2009, 141: 322-328.

DOI: 10.1016/j.snb.2009.06.021

[3] Tongsen Yang. Expectation of GC technology in analyzing gas. Chemical Analysis and Meterage, (2006).

[4] Reyes D R, Iossifidis D, Auroux P A, et al. Micro total analysis systems[J]. Analytical chemistry, 2002, 74(12): 2623-2636.

DOI: 10.1021/ac0202435

[5] Auroux P A, Iossifidis D, Reyes D R, Manz A. Anal. Chem, 2002, 74(12): 2637-2652.

DOI: 10.1021/ac020239t

[6] Sabounchi P，Morales A M，Ponce P，et al． Sample concentration and impedance detection on a microfluidic polymer chip[J]． Biomedical Micro devices，2008，10(5) : 661 -670.

DOI: 10.1007/s10544-008-9177-4

[7] Mingjie Liao. Development of miniature gas chromatography column[D]. Chengdu: University of Electronic Science and Technology of China, 2011: 20-24.

[8] Martin A.J. P; aynge.R.L.M., Biochem.J., 1941, 35, 1358.

[9] Berthold A, Nicola L, Sarro PM, Vellekoop MJ, Glass-to-glass Anodic Bonding with Standard IC Technology thin Films as Inter-mediate Layers[J], Sens Actuators A, 2000, 82: 224~228.

DOI: 10.1016/s0924-4247(99)00376-3

[10] Yangyang Wu, Junfang Ni. The processing research of glass micro flow chip[J], Journal of SuZhou University(Engineering Science Edition), 2009. 2: Vol9. NO. 1: 45~48.

[1] Xinhua Ma, Guorong Ou, et al. Rapid processing technology of micro-fluidic chip in water quality monitoring of [J]. J Prev Med Chin PLA, August 2013 Vol. 31 No. 4: 321~323.

[12] Luli Jia. The discussion of chromatographic column stationary phase made from 20 m polyethylene glycol [J]. Journal of Instrumental Analysis, 2008 Vol. 3: 41~43.

[3] Xinglong Jia, Xuejiao Xu. The research of Gas chromatography analysis 1, 4 - butyl alcohol and the content of secondary component [J], Technology Wind , 2013. 10：6~10.