btex analyzer Articles

  • Capillary GC Columns for Analysis of BTEX Hydrocarbons

    A number of different stationary phases have been used for analyzing benzene, toluene, ethylbenzene, and xylene hydrocarbons (the BTEX) compounds). Capillary columns based on a nonpolar shape-selective phase, a chiral stationary phase, and a polyalkylene glycol phase, and support coated open tubular columns (SCOT), exhibit differing abilities to resolve these compounds. A Bentone ...


    By Sigma-Aldrich Co., LLC

  • 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 ...


    By Environnement S.A

  • Procedure for total BTEX rapid assay installation on the RPA-I

    GENERAL COMMENTS: New RaPID Assay methods can be programmed by the operator into the RPA-I analyzer. This Technical Bulletin is a guidteo the manual installation of the Total BTEX method on the RPA-I using the keypad. Please refer to the RPA-I Manual for a detailed discussion. PROTOCOL: 1. Turn on the RPA-I. 2. Press the [OPTION] key on the top right side ...


  • Monitor BTEX Compounds and Fuels in Water, Using Solid Phase Microextraction and Capillary GC

    BTEX compounds, kerosene, diesel fuel, or gasoline in water or aqueous suspensions of soil can be monitored by solid phase microextraction (SPME) and capillary GC on a short, narrow bore column (15mx 0.20mm ID).   A sample can be extracted and analyzed in less than 40 minutes.   Because no solvent is required, sensitive detection id scharacteristic of SPME/GC analyses.   ...


    By Sigma-Aldrich Co., LLC

  • Praxair Selects Baseline-MOCON’s New BevAlert Gas Analyzer To Improve Detection Sensitivity Of CO2 Impurities

    Lyons, CO — Praxair, Inc. has upgraded its carbon dioxide (CO2) gas analysis with the installation of multiple BevAlert™ Model 8900 at its plants across North America and select international locations.The BevAlert Model 8900 new gas chromatograph, from Baseline-MOCON, Inc., a subsidiary of MOCON monitors trace impurities in CO2 (and other gases) while setting new standards for analytical ...


    By MOCON, Inc. - Baseline

  • Case study - NAPL forensics analysis at refinery site in Kansas

    An environmental consultant at Subsurface Environmental Solutions, LLC used Sitelab to fingerprint a large plume of Non Aqueous Phase Liquids (NAPL) located at a former oil refinery in Kansas. The plume is commingled with gasoline, diesel, crude oil and other petroleum products. Sitelab’s portable UVF-3100D analyzer is fitted with optical filters which can measure the C6 to C10 gasoline ...


    By Sitelab Corporation

  • Enhanced Aerobic Bioremediation of Petroleum UST Releases in Puerto Rico.

    Abstract: Releases of petroleum compounds from underground storage tanks (USTs) containing diesel fuel and gasoline are a serious and increasingly prevalent problem in Puerto Rico. Remediation of groundwater impacted by these releases utilizing common methodologies can be quite costly and require long periods of time to implement. Oxygen is often the limiting factor retarding optimal ...


    By REGENESIS

  • Surfactant enhanced in-situ remediation of DNAPL impacted soil and groundwater - Montreal refinery

    Abstract A Montreal chemical refinery reduced the dichlorobenzene and other dense non-aqueous phase liquid (DNAPL) impacts on the soil and groundwater where a railway line is adjacent to an above ground storage tank farm. Ivey-sol® surfactant mixtures were injected three times during a two week pilot test, into a series of in-situ wells. The soil and groundwater matrix experienced ...


    By Ivey International Inc.

  • 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 three ...


    By Ogawa & Company, USA, Inc.

  • Modeling Intrinsic Remediation With Multiple Electron Acceptors: Results From Seven Sites

    Recent results from the Air Force Center for Environmental Excellence's (AFCEE) Natural Attenuation Initiative indicate that anaerobic processes dominate the biodegradation of dissolved petroleum hydrocarbons during intrinsic remediation (natural attenuation) of contaminated aquifers. In particular, sulfate reduction and methanogenesis appear to be the major sinks for BTEX compounds at seven ...


  • 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 ...


    By Chromatotec Group

  • Biodegradation of MTBE Utilizing A Magnesium Peroxide Compound: A Case Study.

    ABSTRACT: A patented magnesium peroxide compound was recently employed at an underground storage tank facility to increase the available oxygen in the groundwater for the biodegradation of fuel hydrocarbons. The objective of this remedial effort was to substantially reduce the dissolved-phase concentrations of BTEX and MTBE and to arrest further migration of the dissolved fuel hydrocarbon plume. ...


    By REGENESIS

  • Vertical and Diurnal characterization of volatile organic compounds in ambient air in Urban areas

    More than half of the world’s population lives in cities, and their populations are rapidly increasing. Information on vertical and diurnal characterizations of volatile organic compounds (VOCs) in urban areas with heavy ambient air pollution can help further understand the impact of ambient VOCs on the local urban environment. This study characterized vertical and diurnal variations in ...

  • Sample Preparation for Refuse Derived Fuels

    Plastic, wood and shredded waste, are in times of rising crude oil prices very interesting additions to the classic fuels. Especially in the cement industry, the energy rich fractions from conditioning processes are readily burned along. Important here is the analytical evaluation of the materials. Refuse derived fuels: Plastic, wood and shredded waste: Here are some examples of more or less well ...


    By Fritsch Milling and Sizing

  • Case study - GRO in soil at gasoline UST site

    These case studies show the performance using Sitelab’s UVF-3100 analyzer testing gasoline range organic hydrocarbons.  This includes benzene, xylene, BTEX and other volatile petroleum compounds in the GRO or VPH C6 to C10 hydrocarbon range. When calibrated using Sitelab's GRO calibration kit (CAL-025), the UVF analyzer produces test results that correlate well to laboratory ...


    By Sitelab Corporation

  • Peroxygen Mediated Bioremediation of MTBE.

    ABSTRACT: Evidence is mounting, from laboratory and field studies, that oxygen plays a role in the bioremediation of methyl tertiary butyl ether (MTBE). Our experience with a number of commercial applications of peroxygen, in the form of Oxygen Release Compound (ORCâ), correlates the provision of enhanced aerobic conditions with enhanced MTBE biodegradation. Subsequent laboratory and field ...


    By REGENESIS

  • Detection of atrazine and metolachlor in soil

    Matrix: Soil Analytes: Atrazine and Metolachlor Range of Detection: Atrazine: 0.5-25.0 ppm, Metolachlor: 0.5-25.0 ppm Materials: Rapid Assay Test Kit SDI BTEX Sample Extraction Kit - Part No. A00165EA Dilution Vials with Caps – Part Nos. 1048700/1038303 25uL Fixed Volume Pipettor Z00257 Pipet ...


  • 3 Ways to Optimize Your EHS Data

    See What You've Been Missing As consultants, we’re always looking to find the most efficient ways to understand our project site data and maximize our understanding of the conditions and processes in the subsurface. Understanding data begins with quality data management, but it's important to have a streamlined process for providing data in proprietary formats for mapping and ...


    By Antea Group - USA

  • Accelerated Bioremediation as an Alternative to Conventional Remedial Technologies.

    ABSTRACT: Application of bioremediation as an alternative technology to expedite soil and ground-water remediation has been effective in reducing the concentration of hydrocarbons at an affordable cost. Bioremediation processes can be achieved by the addition of biological organisms into the soil and ground water which are contaminated and are microorganism deficient. The microorganism's ...


    By REGENESIS

  • FTIR gas analysis improves container safety

    Introduction Entry to freight containers represents a significant hazard to staff responsible for inspection, stuffing or destuffing because of the large number of airborne chemicals that can be present. Research in Germany and the Netherlands found hazardous levels of gases and vapours in around 20% of all containers and this level of contamination is now accepted as commonplace. It ...


    By Gasmet Technologies Oy

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