chemical vapor detection Articles

  • Book Review: Detection Technologies for Chemical Warfare Agents and Toxic Vapors

    Detection Technologies for Chemical Warfare Agents and Toxic Vapors, by Yin Sun and Kwok Y. Ong. CRC Press, 2005. 272pp. ISBN1-56670-668-8Keywords: book ...


    By Inderscience Publishers

  • Vapor intrusion pathway investigation

    The BEACON samplers defined the vapor intrusion of tetrachloroethene and 1,1-dichloroethene, while the Summa canisters (EPA Method TO-15) reported all non-detects. The BEACON survey enabled detection of some chemicals at levels below the Summa canisters practical quantitation limits providing a more complete and realistic vapor intrusion exposure pathway evaluation. Based on the defined vapor ...

  • Detecting Mercury in Water

    Determination of Mercury (Hg) in Water by Hand-Held, Portable Cold Vapor Atomic Fluorescence SpectrometryWater is the most familiar and most abundant compound on Earth, making up 71% of its surface area.[1]It is a vital component for all known forms of life and is the aquatic habitat for thousands of species of microalgae, fish and shellfish. [2] With the presence of running water in our ...


    By Arizona Instrument LLC

  • New Process Gas Analyzer for the Measurement of Water Vapor

    KEYWORDS TDLAS, WMS, Laser Spectroscopy, Water Vapor Measurement, Gas Analyzer ABSTRACT A new analyzer for the measurement of water vapor concentration based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) was developed. The water-vapor line at 1854-nm was selected for the measurement, and the performance of the system was evaluated on different ...

  • 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.

  • Enhanced LDAR in the chemical industry

    As a result of recent leak detection and repair (LDAR) audits and the associated issues (as described in the Winter 2009 issue of Environmental Quarterly), EPA is initiating enhanced LDAR programs as part of the most recent consent decrees.1 The enhanced LDAR programs for chemical facilities are more stringent than the enhanced LDAR previously required for the petroleum refining industry. ...


    By Trinity Consultants

  • Pt. 1 - IN the MIX - Construction Safety and Gas Detection

    This is part one in a 4 part series to be posted over the next 4 weeks. "Pointers for Construction Safety & Health compliance" Rob Sant Technical Products Manager, Certified Air Safety, Vancouver Washington Threats to our workers health and safety are numerous; an often overlooked hazard is the quality of the air they breathe. Whether simple nuisance odors like ...


  • Fixed Versus Portable Gas Detection – Which Is Better?

    Did you know that workers are needlessly injured every year as a result of leaking toxic or combustible substances? Such incidents are known to involve a wide range of hazardous gases (including ammonia, carbon monoxide, chlorine, hydrogen sulfide, hydrocarbon vapors and so on). The sad reality is that most of these accidents are avoidable if only the workplace is adequately monitored. This leads ...

  • 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

  • Prominant developer chooses cetco gas vapor barrier for chromium protection case study

    Project: Droyers Point Location: Jersey City, NJ Products: Liquid Boot® Gas Vapor Mitigation System Background: During the summer of 2004, construction commenced on a multi-family housing plan, developed by K. Hovnanian Homes. This 23-acre Brownfield redevelopment project included 30 new three-story townhouse buildings ...


    By CETCO

  • Program developed to ensure long-term O&M and performance of vapor intrusion mitigation

    EPA Region 7 has developed a comprehensive VI program to address the installation and long-term operation and maintenance (O&M) of VI mitigation systems, as well as assessment sampling for future systems, in homes near the Chemical Commodities, Inc. Superfund site (CCI). Region 7's VI Program Implementation Manual, which describes decision processes and procedures as well as roles and ...

  • Chemical Industry: Ammonia Emergency Plan Calls on Packed Tower to Scrub Released Chemicals Case Study

    A few years ago Union Camp turned a corner. Management decided that advance planning would take the place of reacting after the fact to an emergency or regulatory agency demands. At Union Camp’s Dover, OH. facility, byproducts of the paper industry are converted into usable specialty chemicals for cosmetics, adhesives and other industries. Crystallization is a process used intensively with ...


    By CR Clean Air Group, LLC

  • 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

  • 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 ...

  • 10 Reasons why you should continuously monitor low temperature and liquid chemical sterilants for worker safety

    1. Sterilant chemicals are highly toxic Low temperature and liquid chemical sterilants are designed to kill all microorganisms including resistant spores and if they were not toxic, they would not be effective in sufficiently high concentration to destroy all microbial life including the chemically resistant sporicidal forms of certain ...


    By ChemDAQ, Inc.

  • Case History - Ammonia Emergency Plan Calls on Packed Tower to Scrub Released Chemicals

    Croll-Reynolds designed the Union Camp packed tower scrubber for ammonia removal efficiency at 99+% for the minimum single valve release and well over 90% for the entire range of operation. A few years ago Union Camp turned a corner. Management decided that advance planning would take the place of reacting after the fact to an emergency or regulatory agency demands. At Union Camp's Dover, OH, ...


  • 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

  • Air Monitoring Information to Aid in the Assessment of Potential Human Health Risk from an Ongoing Landfill Fire

     Abstract The North Carolina Division of Air Quality (DAQ) was asked by the Occupational and Environmental Epidemiology Section (OEES) of the North Carolina Department of Health and Human Services to provide air monitoring information to aid in the assessment of potential human health risk from an ongoing landfill fire in Dare County. The Air Toxics Analytical Support Team (ATAST) arrived ...


  • How can you measure Peracetic Acid separately from Hydrogen peroxide, Isn’t there hydrogen peroxide in PAA?

    We receive questions of this sort frequently and the questioner is partly right. Peracetic acid (PAA) is formed in an equilibrium mixture with hydrogen peroxide and acetic acid, so in a mixture of PAA, hydrogen peroxide and acetic acid, PAA is being continually formed by the reaction of hydrogen peroxide and acetic acid, and peracetic acid is continually breaking down to reform hydrogen peroxide ...


    By ChemDAQ, Inc.

  • European On-Line Particle Mass Spectrometry

    An international workshop on European On-line Particle Mass Spectrometry (PMS) was held 29th-30th of November 2005 at the JRC in Ispra, Italy. The main goals of the Workshop were: 1) To get together all European scientists involved in the field of PMS 2) To review the latest scientific progress on the field of PMS, with particular emphasis on:a. New instrumentationsb. Data analysisc. ...


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