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Polyurethane Foam as an Effective Adsorbent for Pesticides in Air (GC Analysis)
5 Aug 2015Increasing concern over the presence of pesticides in indoor and ambient air has led to the use of polyurethane foam (PUF) as a lightweight, easy-to-use sampling material for these semi-volatile compounds. Cylindrical PUF plugs of appropriate density effectively trap contaminants without creating excessive back pressure. In this application note, background and pesticide recovery from cleaned and un-cleaned PUF plugs were compared, to verify that cleaning procedures do not alter the performance of the plugs.
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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.Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity. Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.Air 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).PesticidesPesticides are used to protect crops from diseases, pests and unwanted plants. They are classed as persistent organic pollutants (POPs) and can be harmful to humans. The Environmental Protection Agency (EPA) currently regulates the use of pesticides in the USA. Laboratory SafetyLaboratory safety is essential to the effective operation of all laboratories and is required to minimize the risk of harm during experiments. Guidelines, regulations, and equipment should be available in all laboratories to ensure that the working environment is safe and secure.Airborne PollutantsAirborne pollutants are particulates, biological molecules or other harmful materials that exist in the atmosphere. These pollutants are known to cause harm to health and the environment. Examples include persistent organic pollutants (POPs), carbon monoxide, sulfur oxides, and nitrogen oxides.Polychlorinated Biphenyls