btex measurement Articles
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Field Method Comparison between Passive Air Samplers and Continuous Monitors for VOCs and NO2 in El Paso, Texas
This study evaluates the performance of Model 3300 Ogawa Passive Nitrogen Dioxide (NO2) Samplers and 3M 3520 Organic Vapor Monitors (OVMs) by comparing integrated passive sampling concentrations to averaged hourly NO2 and volatile organic compound (VOC) measurements at two sites in El Paso, TX. Sampling periods were three time intervals (3-day weekend, 4-day weekday, and 7-day weekly) for ...
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BTEX monitor, equal performances to laboratory chromatographs
Environnement S.A leveraged its technical leadership in this field with an extensive experience, being one of the first companies creating its first BTEX analyser almost 20 years ago. The VOC72M third generation of the series is, up to now, the most compact and fully automated analyser on the market, self-contained and newly designed for providing equal performance to the laboratory ...
By ENVEA
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Characterisation of ambient benzene, toluene, ethylbenzene and m-, p- and o-xylene in an urban traffic area in Bangkok, Thailand
Ambient Volatile Organic Compounds (VOCs) were examined in a heavy traffic urban area in Bangkok, Thailand, on focusing monoaromatic compounds of benzene, toluene, ethylbenzene, m-, p- and o-xylene (BTEX). Passive samplers were used to measure ambient BTEX concentrations in the environment close to very congested roads. Prior to the measurement, the validity of passive sampler performance was ...
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Why do you need to measure BTEX in Ambient Air?
Accurate and reliable BTEX testing (Benzene, Toluene, Ethylbenzene and Xylenes) is critical in determining the levels of exposure and contamination in the environment. High levels of BTEX exposure can affect human health and the environment, which has resulted in a European Directive and with EPA guidelines to set allowable limits. The World Health Organisation (WHO) considers the exposure to ...
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Natural Gas: Complete Analytical Solution
Chromatotec® has developed in its Research & Development laboratories, a new instrument for hydrocarbon (C1-C6+) measurements and calorific values as well as WOBBE index computation. This analyzer is based on chromatography principle using a Thermal Conductivity Detector (TCD). The sample will be separated into the column and quantified by the detector. A difference of thermal ...
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Case study - Ambient air monitoring by PID detection - airTOXIC
First Case THE PROBLEM: How to monitor air quality from 1 spot in 12 different towns ? THE SOLUTION The airToxic PID with the communication protocol MODBUS allows to transfer the results of the 12 instruments to a central room RESULTS airToxic PID allows to have an improved sensitivity Better follow up of the polluting compounds Centralised information with the communication protocol ...
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Raw water intake monitoring - Case Study
The Situation Hydrocarbons in municipal water supplies, including fresh water and desalination systems, are commonly limited to less than 1 part per million. Surface water from rivers, lakes, or the sea with marine traffic, nearby pipelines, or regular flooding can be contaminated by hydrocarbons. Freshwater treatment systems can be damaged by hydrocarbons or allow them to pass through ...
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