Chromatotec articles

Abstract

Because of their major role in indoor and outdoor air pollution, even at trace levels, VOCs are of great interest, and their monitoring requires sensitive analytical instruments. Several techniques are commonly used, such as portable sensors, Proton Transfer Reaction Mass Spectrometry (PTR-MS) and Thermal Desorption Gas Chromatography (TD-GC). The latter is widely used off- and on-line with Flame Ionization Detectors (FID) or Mass Spectrometers (MS). Given th

Formaldehyde is a major indoor air pollutant. Accurate analysis of airborne formaldehyde is essential for effective monitoring and risk assessment. For many formaldehyde analysis techniques, the accuracy of the results depends on the calibration system. Existing formaldehyde calibration methods often face limitations, such as instability over time or limited concentration range. They also lack practicality for on-field calibration either because of bulkiness or because of high gas consumption

Context & challenges

The paper industry is highly recognized for odor nuisance generated by the process of manufacturing paper pulp, cardboard or other products derived from wood, as well as the reagents used in these processes.

Following the publication of a ministerial decree on September 10, 2020, French manufacturers in the paper sector must respect with compliance requirements on the quality of the discharges of hazardous su

Essential features of Chromatotec Solutions : Auto range and Dual range

Dual Range
Chromatotec analyzers quantify and detect compounds at high (in ppm, for example, before gas deodorization unit) and very low concentrations (in ppb after deodorization process). This dual concentration range system operates using two sampling loops of different volume or loop and trap. The system automatically switches between the two sampling modes to avoid the s

The airmoVOC WMS is a unique and efficient product for monitoring and analysis in liquids. This Mcerts certified solution measures and analyzes VOCs and BTEX (Benzene, Toluene, Ethylbenzene and Xylene) dissolved in liquid matrices. Chromatotec presents a headspace sampling system (following US EPA method 502-2) designed to extract representative samples from a liquid phase. The vaporized sample can be preconcentrated

MEDOR easy is a very simple auto GC-ED (MEDOR Electrochemical wet cell Detector) for the analysis and monitoring of one or two sulfides mercaptans in natural gas and gaseous fuels.

This turnkey online solution MEDOR easy monitor accurately all type of odorants blends, in ppm/ppb, depending on configuration

The MEDOR

Context & Challenges
Following the publication of a ministerial decree on August 24, 2017, French industrial activities must meet compliance requirements on the quality of discharges of hazardous substances into water from environmental protection installation. Industrials are particularly targeted by these new guidelines and must adapt their monitoring systems.

Chromatotec Solutions
Chromatotec has developed a solution equipped with

Unique automatic gas chromatograph (auto-GC) cylinder-free

The use of carrier gas, from cylinder, is restrictive. Indeed, users may be concerned with the on-site use of hydrogen (H2) and the complexity of cylinder management. Moreover, the analysis can be interrupted if cylinders are not changed in time. To solve these problems, Chromatotec manufactures three gas generators to be connected to auto-GC :

• Hydroxychrom (H2)&n

Chromatotec has expanded its offer with trace moisture probe !

After several years of collaboration, Chromatotec is acquiring part of the activity of Opta-Periph company : "Moisture in gas analysis".

With this transfer of technology, Chromatotec group offers complete solutions for the measurement of humidity in chlorine (CL2), in pure gases including gases with more than 30% oxygen (O2) or hydrogen (H2), as well as in medical air and gase

The airmoHCHO enable the analysis of acetaldehyde and methanol in addition to formaldehyde

Simultaneous on-line monitoring of formaldehyde (HCHO), acetaldehyde and methanol is achieved without interferents.

The new configuration includes a carrier gas back-flush to clean the GC of heavy components in the matrix.

Total cycle time is only 30 min as sample preparation is not required.

They are suitable for ambient ai