Hybrid separation and detection device for analysis of benzene, toluene, ethylbenzene, and xylenes in complex samples.
We present a hybrid system for rapid detection and analysis of benzene, toluene, ethylbenzene, and xylenes (BTEX). The system combines selective and sensitive sensing elements with a fast and miniaturized chromatographic separation method. The sensing elements are an array of microfabricated quartz crystal tuning forks modified with selective molecularly imprinted polymers, and the separation method uses optimized short columns. The high sensitivity and selectivity of the sensing elements together with the help of the separation provides fast detection and analysis of BTEX in real samples containing highly concentrated interfering agents without preconcentration or heating of columns. The low cost, low power consumption, and small size of the hybrid device are particularly suitable for occupational health, industrial safety, and epidemiological applications.
Center for Bioelectronics and Biosensors, Biodesign Institute and Department of Electrical Engineering, Arizona State University, Tempe, Arizona 85287-5801, USA.
Rodrigo A
RA
Iglesias
Francis
F
Tsow
Rui
R
Wang
Erica S
ES
Forzani
Nongjian
N
Tao
D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D001554:Benzene / Q000032:analysis*; D001555:Benzene Derivatives / Q000032:analysis*; D004784:Environmental Monitoring; D008401:Gas Chromatography-Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D054802:Molecular Imprinting / Q000379:methods; D011108:Polymers / Q000737:chemistry; D011791:Quartz / Q000737:chemistry; D014050:Toluene / Q000032:analysis*; D014992:Xylenes / Q000032:analysis*
D000393:Air Pollutants; D001555:Benzene Derivatives; D011108:Polymers; D014992:Xylenes; D011791:Quartz; D014050:Toluene; D001554:Benzene; C004912:ethylbenzene