Investigation of the Performance of Sorptive Extraction Cartridges for Air Monitoring
3 Aug 2014It is demonstrated that despite the considerable advantages of sorptive extraction cartridges for sampling of semi-volatile analytes from liquids, they perform poorly for the higher-volatility analytes that are typically of interest in air monitoring and material emissions applications. For such cases, it is shown that pumped sampling into sorbent tubes offers much better performance for a wider range of analytes.
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Easy-VOC
Markes International LtdGrab-sampler for air sampling. Easy-VOC is a hand-held device that facilitates the rapid ‘grab’ sample collection of small volumes (<500 mL) of air directly onto sorbent tubes without the need for calibrated pumps.Sorbent tubes attach to the end of the Easy-VOC and air/gas is drawn directly onto the tube. Easy-VOC regulates the flow rate independent of the force used to pull the air through.Grab sampling involves collecting volumes of air or gas over a very short period of time. Sampling onto sorbent tubes in this manner offers many advantages over other methods, which can be cumbersome, expensive and inaccurate.Features & Benefits: Easy grab sampling onto sorbent tubes No pump to calibrate 50–500 mL volumes More versatile alternative to canister sampling - compatible with n-C3 to n-C32 Fits ¼-inch and 6 mm o.d. sorbent tubes