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Case Study airmoVOC BTEX for VOCs measurement in ambient air

Case Study airmoVOC BTEX for VOCs measurement in ambient air
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Case Study airmoVOC BTEX for VOCs measurement in ambient air - 1

Case Study N°AA6 – Ambient air monitoring – airmoVOC BTEX – updated: 09.10.15 Case Study Ambient Air Monitoring Applications Ambient air monitoring by FID detection – airmoVOC BTEX Context & Challenges Urban pollution is a problem that concerns more and more people in charge of public health. In large cities, car emissions are an important source of atmospheric pollution. This problem is growing as the traffic keeps on increasing. BTEX compounds are present in car emissions. It is therefore important to be able to analyze them with short analysis cycle duration and on a continuous and automatic way. Chromatotec® Solutions The note presents the analysis of ambient air BTEX by trapping of the compounds on adsorbent. The air is sampled at ambient temperature by a trap. This system allows performing a pollution monitoring on a quasicontinuous mode (sampling during 75% of the time). The trapped compounds are then thermo-desorbed. The compounds are separated using a metallic capillary column and detected with a flame ionisation detector (FID). The analysis are treated by an integrated microprocessor, and the results are transferred towards a PC where easy to use software allows to visualise and to retreat the results if necessary. Intern calibration systems allows for calibration and validation of results. sales@chromatotec.com www.chromatotec.com

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Case Study airmoVOC BTEX for VOCs measurement in ambient air - 2

Case Study N°AA6 – Ambient air monitoring – airmoVOC BTEX – updated: 09.10.15 Technical information and results A typical chromatogram of BTEX in ambient air is shown in Figure 1. The results are displayed using Vistachrom software. All results can be re-treated using peak viewer software. On the chromatogram, one can see that concentrations as low as 10 ppt can be measured. A trend obtained on a period of 60 hours in the country side near Bordeaux is shown in Figure 2. Due to the short resolution time, the instrument allows for monitoring of pollution due to traffic. As it is shown on the...

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