Case study : VOC analysis in ambient air by FID dectection - Complete system airmOzone


Courtesy of Chromatotec Group

Ozone concentration has been multiplied by 5 in the last century in the middle latitudes of the northern hemisphere from 10 PPB in 1874 to approximately 50 PPB today. This is an increase of 1.6% per year; the trend is probably higher (2.4% a year) over the last decades. (Chapter 1 of the International Geosphere-Biosphere Program - World Climate Research Program) In order to stop this global trend, directives have been written concerning the reduction of ozone precursors emissions (NOx and VOC) to define national emission maxima. The Directive 2000/96/EC states that the level of Benzene shall be reduced to an annual average of 5 μg/m3 by 2010 for EU countries (1 ppb = 3.25μg/m3).

Regarding VOC, the European directive 2002/3/CE advises to analyze 30 VOC, continuously and 24 hours per day. US Environmental Protection Agency suggests to analyze 56 VOC which constitute the PAMS program Photochemical Assessment Monitoring Stations In Japan, 58 VOC are being monitored 56 VOC + Alpha and Beta pinene…………… Specific Chromatotec instruments have been designed to meet those new requirements in compliance with EN 14 662-3.

The Solution : FID for 88 compounds from air or water
airmOzone: A52022 : cabinet 33U

Option Chroma S for sulfur

airmOzone:cabinet A52022 made of an airmoVOC C2-C6 and an airmoVOC C6-C12 with FID.

By combining those two instruments, it is possible to analyse light and heavy VOC compounds. Thanks to FID detection and H2 carrier gas, the separation and sensitivity is excellent down to PPT levels.

The equipment has TUV approval on BTEX. The Instruments are being calibrated with primary gas standard certified at ±2%.

There are no interferences on 10 compounds which can potentially interfere with benzene in compliance with EN 14 662-3 List of the 10 potential interfering compounds with Benzene.

The analyser is LINEAR: range 0 / 100 ppb (0/325 μg/m3) (see doc airmoBTX / airmoVOC C6-C12, Linearity and repeatability Test).

The instruments are fully automated thanks to internal calibration (airmoCAL). The VISTACHROM software controls the analysers and enables storage and display of the chromatograms thanks to Peak Viewer.

It is possible to transfer data to a data logger with the communication protocoles MODBUS RTU, JBUS or German PROTOCOL.

Thanks to those features, the airmOzone is the adequate solution for in situ VOC analysis.

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