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voc measurement Applications

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    Measurement solution for measuring total VOC via FTIR

    Current Total VOC Measurements

    The most common, and current standard, method for measuring Total Volatile Organic Compounds (VOC) is the use of a Flamed Ionisation Detector (FID). This gives a representative value of the total carbon content of a gas stream, as the FID cannot tell which specific organic compounds are present.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    Measurement solution for total VOC via FTIR

    Total Volatile Organic Compounds (VOCs) is a common measurement required from industrial emissions. Commonly, a single measurement value is obtained through the use of a Flame Ionisation Detection (FID) analyser. The pyrolysis of the gas stream in a FID analyser allows it to make a measurement of the carbon content of the gas stream. FID analyser cannot indicate the relative abundances of different organic species in a gas stream and often have widely different responses for different gases. However, they are taken as the standard reference method for Total VOC emission measurements.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    Measurement solution for VOC emissions monitoring

    Protea has used our VOC gas analysers in many projects requiring the monitoring of complex mixes of VOCs. In the chemical and pharmaceutical industry, VOC abatement plants such as scrubbers and carbon-bed systems are typical installations where the use of Protea analysers and our VOC analysis expertise have proved valuable to plant operators. They prove a very powerful and flexible tool in both process gas measurements and VOC emissions monitoring. In the laboratory, Protea can deliver instruments with all the chemometric software and support to enable users to measure hundreds of gases.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    Measurement solution for complex, real-time VOC measurement with atmosFIR FTIR gas analyser platform

    Introduction

    Volatile organic compounds (VOCs) are a group of organic compounds which have a low vapour pressure at room temperature, meaning that they will readily evaporate into the surrounding air. The term VOC refers to many different classes of organic compounds such as alkanes, alkenes, alcohols, aldehydes, aromatics and many more.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    Measurement solution for AD-211 VOC speciation in natural gas, syngas & gasification

    Composition of Natural Gas, Syngas via VOC Speciation

    The composition of fuel gas is important in order to determine calorific value and also to detect any unwanted contaminants in the gas. Online analysis is important in order to give real-time and direct action on issues.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    Low level measurement of VOCs and Terpenes close to the sea and the Landes Forest

    It has been established that organic aerosol (OA) makes up for a major fraction of fine particulate matter in all region of the atmosphere. This fraction accounts approximately for half of the total PM2.5 dry mass.1,2 Primary OA is directly emitted in the troposphere from anthropological and natural sources whereas secondary OA (SOA) is formed in-situ in the atmosphere from the oxidation of biogenic or anthropogenic gas-phase precursors and subsequent partitioning of the less volatile products into the particle phase. The current number is that, on a global scale, SOA would represent around 60% of the overall OA.3 However, recent global mass-balance estimations for the removal of volatile organic compounds (VOC) suggest that this number could under-predicts SOA production.4 Recent field measurements in urban locations are also in support of a larger share, indicating that SOA is the dominant fraction of OA, with amounts considerably 20 greater than models predictions.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Analysis of VOC compounds in water by Purge & Trap or dynamic headspace

    Context & Challenges Volatile organic compounds (VOC) can be dissolved in water. Sometimes water is polluted and to study contamination of VOC in finished drinking water, VOC must be measured. Chromatotec® Solutions Chromatotec® has developed a specific system for the measurement of VOC in water: a Purge & Trap system, the airmoPURGE. The analyzer is coupled with a degasing system allowing the extraction of dissolved gases. The complete system is based on: - 502.2 method from US EPA – “Volatile organic compounds in water by purge and trap capillary column gas chromatography with photoionization and electrolytic conductivity detectors in series – Revision 2.1”. - 524.2 method from US EPA – “Measurement of purgeable organic compounds in water by capillary column gas chromatography/mass spectrometry – Revision 4.0”.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Measurement solution for breathing gas analysis

    The quality of compressed breathing gases for aircraft, diving and marine has very tight limits imposed by bodies such as NATO and national bodies such as MOD. The test requirements are for contaminants such as CO, CO2, Total VOC, CFCs and halogenated hydrocarbons, as well as H2O and O2 content.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    Measurement solution for organic vapour speciation

    Protea has deployed FTIR gas analysers in many projects requiring the monitoring of complex mixes of VOCs. In the chemical and pharmaceutical industry, scrubbers and carbon-bed abatement plants are typical installations where the use of Protea FTIR analysers and our chemometric expertise have proved valuable to plant operators. They prove an invaluable tool in process measurements and emissions monitoring. In the laboratory, Protea can deliver instruments with all the chemometric software and support to enable users to measure hundreds of gases.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    PTR-MS systems for indoor air quality monitoring

    Room-air VOC detection and monitoring. Measurement of most common VOCs causing smells or health effects. Real-time monitoring of emissions related to the Sick Building Syndrome. Ozone induced reactions in aircraft cabins.

    By Ionicon Analytik Ges.m.b.H. based in Innsbruck, AUSTRIA.

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    PTR-MS systems for biological research

    Real-time measurement of plant defense and leaf wounding reactions. Measurement of VOCs in dynamic biological systems with low detection limit and without sample preparation.

    By Ionicon Analytik Ges.m.b.H. based in Innsbruck, AUSTRIA.

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    Gas monitoring instruments and systems for fumigation

    Sea cargo containers and wooden packing materials are fumigated to control the spreading of pest animals and micro-organisms. Fumigant gases are toxic and measurements are carried out as a health and safety precaution. Measurements are required by e.g. customs inspectors prior to opening containers, making the shipping companies responsible for carrying out measurements. Products shipped in containers may release VOCs from e.g. solvents and glues used in manufacturing process. The concentrations of vapors may be significant in the confined space of the container. While most containers originate in China and Southeast Asia, cargo container measurements are done in ports across the world, as the same gases are encountered in all ports.

    By Gasmet Technologies Oy based in Helsinki, FINLAND.

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    High quality gas sensor solutions for building and IAQ

    Precise measurement of air quality. The carbon dioxide content of room air gives a measure of the air quality, especially as it relates to the health and comfort of the people occupying the building. Air quality can be adversely affected by increased levels of carbon dioxide, carbon monoxide, volatile organic compounds (VOCs), particulates, or bacteria. Increased ventilation reduces the level of all of these unwanted contaminants. Measuring the CO2 concentration provides an economical way of ensuring that there is sufficient air circulation and prevents over-ventilation which can add unnecessary heating or cooling costs.

    By Edinburgh Instruments Ltd based in Livingston, UNITED KINGDOM.

  • Air monitoring equipments for soil contamination monitoring

    Previous land uses or accidental spills can result in Volatile Organic Compound (VOC) contamination of soils. Volatile and semi-volatile compounds can then permeate through the soil and may persist for several years. This contamination can be traced and measured using our Soil Probes in conjunction with our VOC sorbent tubes. Soil probes are also useful in checking the effectiveness of remediation actions. This monitoring technique provides a cost-effective identification of hazardous gases.

    By Gradko International Ltd based in Winchester, UNITED KINGDOM.

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    Low concentrations monitoring of benzene and aromatic hydrocarbons (BTEX) for pollution control and environmental monitoring

    With over 15 years of experience in the measurement of volatile organic compounds (VOC), Environment SA announces the VOC72M, a new generation analyzer for the measurement of BTEX compounds by gas chromatography with photo-ionization detector (PID). The VOC72M can handle up to 40 compounds and eight configurations for analysis. This compact and fully automated analyzer with wide voltage range specifications (90-240V) provides equivalent performance to the laboratory chromatographs and is particularly suited to fixe or mobile ambient air quality monitoring laboratories. The VOC72M is fitted with a PID detector new generation, much more sensitive, more stable and whose lamp does not need to be cleaned; the analyzer integrates flow control fittings a 3 levels security system built on and uses only one gas (nitrogen). This robust and low maintenance instrument performs all the functions (sampling, analysis and data management) in a simple and completely autonomous mode. It is a particular

    By Environnement S.A based in Poissy, FRANCE.

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