Vapor Monitoring Articles

  • How to prepare for a chemical attack

    It is a shocking and sad reality that chemical attacks are happening in the world today. The threats continue to rise as global tensions become greater. It can only be a good thing to be prepared if one was to occur in your area. The first step in preparation is to understand more about what chemical attacks are. What are chemical attacks? Chemical attacks involve using toxic ...


    By Fast-ACT

  • Chemical Mfg. Plant Avoids Long Term Shut Down with Thermal Oxidizer

    Recently, Catalytic Products International (CPI) worked with a customer who determined during a routine plant inspection that they had unexpected emissions from their process. This can happen as regulations change and as plants continue to improve operations or even change products or processes.  In this case, the customer voluntarily ...

  • Case study - Ozone sparging closure of an industrial VOC spill site adjacent to a water supply well site

    Description An undocumented surface spill at an active manufacturing facility located adjacent to a public water supply well field released chlorinated volatile organic compounds (PCE, and its breakdown products: TCE, c-DCE, and VC) into soils and groundwater.  The driver for site cleanup was three water supply wells located 200 feet downgradient of the site bounds.  The chosen ...

  • How Food Production Facilities Can Prepare for FSMA

    The Food Service Modernization Act compliance dates have arrived and that likely means significant changes to your current operating procedures. In this podcast, Evan D. Reyes, National Account Manager at Goodway Technologies, discusses key requirements relating to hazard analysis, preventative controls and ...

  • How High-Pressure DSC Can Accelerate Reactions and Shorten Analysis Time

    Increased pressure influences all physical changes and chemical reactions in which a change in volume occurs. In a complimentary webinar from METTLER TOLEDO, learn how high-pressure differential scanning calorimetry (DSC) allows faster materials testing for timely product development and responsive quality management. METTLER TOLEDO is pleased to present a new webinar, “High ...


    By Mettler - Toledo Int. Inc

  • High Quality Moisture Analysis for High Value Resins

    Whether you’re making syringes or turkey basters, pacemakers or milk jugs, maintaining the correct moisture content in your resins is essential to your production process. Join us February 9-11 in Anaheim, CA at Plastec West / MD&M West, booth 3920, and see why our instruments are considered the leaders in moisture analysis for the medical device ...


    By Arizona Instrument LLC

  • EPA Technology News & Trends - Tacoma “Well 12A” Superfund Site

    The U.S. EPA Region 10 office uses an adaptive site management approach that relies on high-resolution site characterization (HRSC) techniques for strategic sampling at the Well 12A project area. This approximate one-square-mile project area is one of three at the 2.5-square-mile Commencement Bay-South Tacoma Channel Superfund site in Tacoma, Washington. The vicinity of Well 12A, one of 13 wells ...


    By TRS Group, Inc.

  • Tacoma, Washington - Well 12A superfund site - Case Study

    Combined Remedies for DNAPL Remediation Project Summary TRS Group, Inc. (TRS) teamed with KEMRON and AMEC, under KEMRON's U.S. Army Corps of Engineers (USAGE) Environmental Remediation Services Multiple Award Task Order Contract (MATOC), to perform electrical resistance heating (ERH) for the remediation of volatile organic compounds (VOCs) in the vadose zone ...


    By TRS Group, Inc.

  • Analysis of Isocyanates using the ASSET EZ4-NCO Dry Sampler

    Introduction Isocyanates are used as a raw material to produce a number of products such as automotive paints, rigid and spray foam insulation, and furniture. Personal exposure can occur while the products made with isocyanates are being applied, or when the materials are removed by grinding or thermal degradation. Workers who are exposed to these compounds are at risk for respiratory ...


    By MilliporeSigma

  • Variability of GPS water vapor associated with warming activity in Peninsular Malaysia during the period of 2008–2011

    This study utilizes the precipitable water vapor (PWV) parameter retrieved from ground-based global positioning system (GPS) to detect warming activity in Peninsular Malaysia from 2008 to 2011. Daily average of GPS PWV and surface meteorology data taken from six selected stations over Peninsular Malaysia are analyzed. Prior to warming detection, GPS PWV results are compared with PWV obtained ...


    By IWA Publishing

  • Modification of tubular ceramic membranes with carbon nanotubes using catalytic chemical vapor deposition

    In this study, carbon nanotubes (CNTs) were successfully grown on tubular ceramic membranes using the catalytic chemical vapor deposition (CCVD) method. CNTs were synthesized at 650°C for 3–6 h under a 120 mL min−1 flow of C2H6 on ceramic membranes impregnated with iron salt. The synthesis procedure was beforehand optimized in terms of catalyst amount, impregnation duration ...


    By IWA Publishing

  • Long-term variation of water vapor content and precipitation in the Haihe river basin

    Based on the Haihe river basin National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis data from 1948 to 2010 and the precipitation data of 53 hydrological stations during 1957–2010, this study analyzed the variation of water vapor content and precipitation, and investigated the correlation between them using several statistical methods. The ...


    By IWA Publishing

  • Correlation and prediction of saline solution properties for their use in mineral processing using artificial neural networks

    Artificial neural networks (ANNs) are applied to correlate and predict physico-chemical, transport and thermodynamic properties of seawater. Values of these properties are needed in the design, simulation and optimization of processes in which seawater is used, mainly in the mining industry. Density, vapor pressure, boiling temperature elevation, specific heat, viscosity, thermal conductivity, ...


    By IWA Publishing

  • FAST-ACT Chemical hazard containment and neutralization system - Technical Report

    ABSTRACT FAST-ACT is a proprietary formulation of non-toxic high-performance specialty materials effective at neutralizing a wide range of toxic chemicals with the added capability to destroy chemical warfare agents. The FAST-ACT formulation is non-flammable, non-corrosive, and significantly reduces both liquid and vapor hazards. Since the dry powder neutralizes threats upon contact, on-site ...


    By Fast-ACT

  • Removal of hexavalent chromium by chemical modification of 4,4′-((1Z,11Z)-2,5,8,11-tetraazadodeca-1,8-diene-1,11-diyl)diphenol: kinetic and equilibrium modeling

    This study aimed to synthesize a new resin through immobilization of the 4,4′-((1Z,11Z)-2,5,8,11-tetraazadodeca-1,8-diene-1,11-diyl)diphenol (TRA) onto silica gel modified (Si-CPTS) with 3-chloropropyltrimethoxy silane (CPTS) and its application for the removal of chromium(VI) ions from aqueous solution as well as from industrial wastewater. The same applications were also made for industrial ...


    By IWA Publishing

  • Coil Coating Case History

    The Customer The Company manufactures metal roofing and gutter systems for the commercial and residential housing industry. The Process Bare coils of recycled steel and aluminum are uncoiled from a roll. The metal is chemically cleaned, treated and rinsed to prepare the surface for optimum coating adhesion and corrosion protection. The coil then enters a ...

  • FTIR resolution requirements for industrial gas analyses

    FTIR Spectroscopy FTIR Spectroscopy is a widely used technique for gas analyses in industrial applications. It is a technique used in the semiconductor industry for measuring the purity of cleaning, etching, and epitreatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D faciltities, FTIR is applied to combustion ...


    By CIC Photonics, Inc.

  • TCE Hot Spots have California Residents Concerned

    For years, many people living near the Moffett Federal Airfield by Mountain View, California, have had concerns over toxic chemicals known to be in the soil and groundwater in the area. After a recent report by the U.S. Environmental Protection Agency (EPA), some residents now admit to being scared. The EPA has found higher than expected levels of trichloroethylene, also known as ...


    By EMSL Analytical, Inc.

  • Understanding QSPR uncertainty in environmental fate modeling

    In cases where experimental data on chemical‐specific input parameters are lacking, chemical regulations allow the use of alternatives to testing, such as in silico predictions based on quantitative structure‐property relationships (QSPRs). Such predictions are often given as point estimates; however, little is known about to what extent uncertainties associated with QSPR predictions contribute ...


    By John Wiley & Sons, Ltd.

  • How Close to Contamination does a Property need to be for Vapor Intrusion to be a Concern?

    Cinnaminson, NJ, February 19, 2013 There are numerous sites across North America that have contaminated soil or groundwater due to manmade pollution.  Some of these sites have been a problem for decades and as communities have grown, more and more residential and commercial properties have been built above or near these areas. A major issue for properties built near these contaminated ...


    By EMSL Analytical, Inc.

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