Low-Cost Benzene Toluene Xylene Measurement Gas System Based on the Mini Chromatographic Cartridge
Open Access
- 28 December 2020
- Vol. 21 (1), 125
- https://doi.org/10.3390/s21010125
Abstract
Benzene, toluene and xylene (BTX) are an important part of the volatile organic compounds (VOCs) to be detected and monitored in the air, due to their toxicity towards human health. One of the most reliable technique used in BTX detection is gas chromatography (GC), which presents a high sensitivity. On the other hand, it has important drawbacks, such as high costs, the need for qualified personnel and frequent maintenance. To overcome these drawbacks, this work reports the development of a low cost and portable BTX gas detection system based on a mini chromatographic cartridge, a photo ionization detector (PID), a simple control unit (based on Arduino architecture) and a mini pump. In order to separate the BTX components, we propose the use of a cartridge 80 mm in length, composed of several commercial chromatographic column sections. To test the system performances, we have injected different amounts (from about 0.3 to 5.3 µg) of benzene, toluene and xylene and two of the most frequent possible interferents (ethanol, acetone). Experimental results have shown different retention time values (i.e., 25 ± 0.5 s, 51 ± 1.2 s and 117 ± 4 s, respectively) for benzene, toluene and xylene.Keywords
Funding Information
- Istituto Nazionale per l'Assicurazione Contro Gli Infortuni sul Lavoro (BRIC 2016 ID12)
This publication has 42 references indexed in Scilit:
- Exposure levels and health risk assessment of ambient BTX at urban and rural environments of a terai region of northern IndiaEnvironmental Pollution, 2018
- Air pollutants and early origins of respiratory diseasesChronic Diseases and Translational Medicine, 2018
- Currently Commercially Available Chemical Sensors Employed for Detection of Volatile Organic Compounds in Outdoor and Indoor AirEnvironments, 2017
- BTX compounds recognition in humid air using differential ion mobility spectrometry combined with a classifierSensors and Actuators B: Chemical, 2017
- Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A reviewCeramics International, 2016
- Evaluation of a new passive sampler using hydrophobic zeolites as adsorbents for exposure measurement of indoor BTXAnalytical Methods, 2013
- Peripheral blood effects in benzene-exposed workersChemico-Biological Interactions, 2010
- Analytical bias among different gas chromatographic approaches using standard BTX gases and exhaust samplesJournal of Separation Science, 2009
- Indoor and outdoor BTX levels in Barcelona City metropolitan area and Catalan rural areasJournal of Environmental Sciences, 2008
- Cost effective passive sampling device for volatile organic compounds monitoringAtmospheric Environment, 2006