solvent detection Articles

  • Single solvent

    The Customer'This company is a leading manufacturer ot polvrner ba^ed textiles, which are used in the medical and pharmaceutical industries. The ProcessThe customer has a single-solvent process that uses MEK. If this process has a leak, the leakage is diverted into an oxidizer for destruction. Leakage levels must be kept BELOW 5% LFL to optimize the process, save product ...

  • Using FTIR spectroscopy to measure hydrocarbon pollution in water

    According to the World Health Organization (WHO) and UNICEF’s 2015 Progress on Sanitation and Drinking Water report almost 700 million people around the world don’t have access to clean drinking water [1]. Poor water quality is beginning to return to the developed world too. The strain of population growth, intensified agricultural practices and continued industrial expansion have are ...


    By Specac Limited

  • High Levels of Chlorinated Solvents Reduced to Non-Detect; Site Receives Closure

    CASE SUMMARY Manufacturing Facility, Europe The subject site has been used for the manufacture of industrial switchgear assemblies and warehousing since the 1970s. A subsurface investigation revealed a highly localized plume near WS10 with significant groundwater concentrations of trichloroethene (TCE) at 260 parts per million (ppm) along with its breakdown product ...


    By REGENESIS

  • Solvent choices for infrared testing of oil and grease in water

    Water is a very strong absorber in the mi d infrared (I R) regio n where o il is measured. We see the effect of infrared absorbance when a cold bucket of water left in the sun is quite warm by afternoon due to the absorption of infrared energy as heat. When measuring part per million (ppm) oil levels with mid IR, the water absorbs so much of the infrared energy that the signal becomes saturated ...


    By Spectro Scientific

  • Enhanced In Situ Bioremediation of Chlorinated Solvents (PDF)

    Anaerobic enhancement of a shallow confined silty sand aquifer has resulted in a substantial biodegradation of a dissolved Tetrachloroethene (PCE) plume at a former metal finishing facility in Secaucus, New Jersey. The injection of a time-release hydrogen compound (HRC™) rapidly converted ambient aquifer aerobic conditions to anaerobic, and maintained such conditions throughout the 6-month ...


    By REGENESIS

  • Rapid in-situ bioremediation of solvents by abiotic and biotic mechanisms

    A combined abiotic/biotic field pilot study was performed at an industrial site with high concentrations of chlorinated solvents in a fractured bedrock groundwater system. The primary groundwater contaminants consist of 1,1,1-trichloroethane (TCA) and related degradation products, including 1,1-dichloroethane (DCA), 1,1-dichloroethene (DCE), chloroethane (CA), and vinyl chloride (VC). The pilot ...


    By RNAS Remediation Products

  • gPRO HP - Chlorinated Solvents - Franklin, Indiana

    SITE BACKGROUND IWM is the consultant Former electronics manufacturing facility with release ...

  • Passively Enhanced In-Situ Biodegradation of Chlorinated Solvents

    Harding Lawson Associates (HLA) conducted a field demonstration to evaluate in situ enhanced anaerobic biodegradation of chlorinated solvents using Hydrogen Release Compound (HRC). The technology is designed to enhance the natural biodegradation process for a more rapid and complete degradation of the organic contaminants to non-toxic compounds (e.g., ethylene). This paper presents the results ...


    By REGENESIS

  • How To: Bioremediate chlorinated solvents without accumulating metabolites

    Chlorinated volatile organic compounds (CVOCs) such as tetrachloroethylene (PCE) and trichloroethylene (TCE), commonly used as dry cleaning solvents and degreasers, pose an ongoing threat to human health and wildlife when spilled into groundwater. Through the injection of bioremediation products into the impacted groundwater, the chlorine atoms can be removed from these compounds in situ. ...


  • PlumeStop Pilot Study: Former Dry Cleaner – Marina, CA, USA; Rapid Solvent Treatment to Non-detect – Degradation Lines of Evidence

    Approach A beta-test pilot evaluation of PlumeStop™ performance was conduced on chlorinated solvent groundwater contamination at a former dry cleaner site. PlumeStop was applied in conjunction with the slow-release electron donor, HRC® and the microbial bioaugmentation dechlorinator inoculum, BDI® for the treatment of residual PCE (550 μg/L). The test was conducted around a ...


    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 ...


  • Analyze Trace Amounts of Solvents in Water Using Packed Column GC

    Glass or stainless steel columns containing 80/120 Carbopack B/3% SP-1500 packing can be used to analyze water-based samples for ppm to low percentage levels of many organic compounds. This bulletin describes minimum detection limits and maximum capacity of these columns, adsorption and memory effects, and other factors that affect component quantitation. Problems are defined that might arise ...


    By MilliporeSigma

  • Detection of polychlorinated biphenyls (PCBS) in concrete

    MATRIX: Concrete ANALYTES: Polychlorinated biphenyls (PCBs) RANGE OF DETECTION: 500 ppb to 10 ppm MATERIALS: SDI PCB RaPID Assay® Kit. SDI RaPID Prep® PCB Sample Extraction Kit. SDI RaPID Prep Soil Collection Kit. Reagents: table salt (sodium chloride) or salt packets used by restaurants (e.g. Dixie ...


  • Detection of PPT levels of atrazine in drinking water

    MATRIX: Drinking Water ANALYTES: Atrazine LIMIT OF DETECTION: 5 ppt RANGE OF DETECTION: 5 to 500 ppt MATERIALS: Atrazine RaPID AssayÒ Kit and Sample Diluent Reagents: atrazine control (preparation described below), methanol and ethylacetate (pesticide grade) and distilled or deionized ...


  • 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 ...


  • Detection of alachlor and its sulfonic acid metabolite in water

    MATRIX: Groundwater, surface water and well water ANALYTES: Alachlor and its major soil metabolite, ethane sulfonic acid (ESA) LIMIT OF DETECTION: Alachlor: 5 ppt to 500 ppt (for 10 mL sample) 0.5 ppt to 50 ppt (for 100 mL sample) ESA: 30 ppt to 3 ppb (for 10 mL sample) 3 ppt to 300 ppt (for 100 mL sample) ...


  • Indirectly suspended droplet microextraction of water‐miscible organic solvents by salting‐out effect for the determination of polycyclic aromatic hydrocarbons

    A simple and low cost method “indirectly suspended droplet microextraction of water‐miscible organic solvents (ISDME)” by salting‐out effect prior to high performance liquid chromatography and UV detection (HPLC‐UV) was used for the determination of polycyclic aromatic hydrocarbons (PAHs) in different samples. ISDME is a combination of salting‐out extraction of water‐miscible organic solvent ...


    By John Wiley & Sons, Ltd.

  • Determination of chlorophenols in sediment using ultrasonic solvent extraction followed by solid-phase extraction, derivatization, and GC-MS analysis

    A method for determination of chlorophenols (CPs) in sediments was developed using ultrasonic solvent extraction followed by solid-phase extraction, derivatization, and gas chromatography–mass spectrometry (GC-MS) analysis. Some effective operational details and parameters on mixing of samples and extraction solvent, adsorption loss, and extraction cycles of the derivatives were studied and ...


    By IWA Publishing

  • Accelerated remediation of chlorinated solvents using a horizontal ZVI PRB in combination with ISCR for enhanced Anaerobic remediation

    Description: Industrial Site in Apeldoorn, Netherlands Consultant and Contractor: NTP Enschede Approach: Severe soil and shallow groundwater contamination by metals and chlorinated solvents (cVOCs) was detected at the site. A comprehensive site remediation plan was developed by NTP and Adventus Group to provide accelerated site clean-up, that included: • Installation of two ...


  • Co‐occurrence of 1,4‐dioxane with trichloroethylene in chlorinated solvent groundwater plumes at US Air Force installations: Fact or fiction

    Increasing regulatory attention to 1,4‐dioxane has prompted the United States Air Force (USAF) to evaluate potential environmental liabilities, primarily associated with legacy contamination, at an enterprise scale. Although accurately quantifying environmental liability is operationally difficult given limited historic environmental monitoring data, 1,4‐dioxane is a known constituent (i.e., ...


    By John Wiley & Sons, Ltd.

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