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Fenceline and Ambient Monitoring of Benzene and Other Hydrocarbons using Diffusive Sampling and TD Analysis

18 Sept 2014

This application note provides an overview of options for the diffusive sampling of benzene and other hydrocarbons in air.

MTS-32

Markes International Ltd

Multi-tube sequential sampler. The MTS-32™ is a compact, portable sampler for the unattended sequential sampling of air onto a series of sorbent tubes. Constant-flow pump technology ensures that the same volume of air is collected onto each tube.The MTS-32 is ideal for analysts needing monitor the concentrations of organic vapours in air as they fluctuate over extended time periods.Features: Sequentially samples on up to 32 × 3½-inch tubes. Constant-flow pump ensures consistent sample volumes regardless of variations in tube impedance. Diffusion-locking technology (Markes’ SafeLok™ tubes or DiffLok™ caps) prevent sample losses and ingress of contaminants. Integral fan continually refreshes the air inside the case, ensuring that the air sampled accurately reflects the immediate environment. Powered by mains electricity or a battery (will run for over 40 hours on battery). Protective gauze across the fan inlet prevents particulates or wildlife from entering. Constructed of low-outgassing components. Field-portable – the MTS-32 can be used virtually anywhere. Applications: Monitoring diurnal fluctuations of pollutants in ambient air. Continuous monitoring of emission events in industrial locations.

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Gas ChromatographyGas chromatography (GC) is an analytical technique used to separate and quantitate mixtures of small and volatile compounds. Gas chromatographs or GC systems include components such as GC columns, detectors, pumps and autosamplers. Choose from packed or capillary GC columns, flame ionization (FID), photoionization (PID) electron capture detectors and selective or non-selective detectors. Find the best gas chromatographs in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Thermal DesorptionThermal desorption is a technique used to release volatile compounds from solid samples by heating them. It is often used in environmental testing and analysis of complex materials. Explore thermal desorption systems in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.BenzeneVolatile Organic Compounds (VOCs)Volatile organic compounds (VOCs) are chemicals that have a low boiling point. Some VOCs are harmful to human health, whereas others can be used to determine the shelf-life of foods samples. HydrocarbonAir SamplingAir sampling is described as the technique used to capture air for the subsequent purpose of analyzing, typically by thermal desorption, the presence of trace particulates, such as volatile organic compounds (VOCs).Carcinogens