pcb extraction Articles

  • Detection of PCBs in wood

    MATRIX: Wood, reduced to fine shavings or sawdust ANALYTE: Polychlorinated biphenyls (PCB) LIMIT OF DETECTION: 2 ppm as Aroclor 1260 MATERIALS: PCB EnSys 12T Soil Test System, Equipment: Tools for reducing wood to fine particles (refer to sample treatment section below). SAMPLE ...


  • The evaluation of extraction and cleanup methods for the determination of PCB aroclors in caulking and sealing material

    Buildings that were built and/or refurbished before 1977 may well have caulking used to seal masonry joints and windows that contain PCB Aroclor 1254 and/or 1260. The Aroclors were used as a plasticzier and were added to the material to ease application and improve resiliency. The caulking material has been mainly used when there are dissimilar materials, like brick next to concrete, metal window ...


  • Extraction of Sediment using the SpeedExtractor E-916 for the determination of Polychlorinated Biphenyls (PCBs)

    PCBs were used as coolants and dielectric fluid in transformers, as flame retardants, hydraulic fluids and additives in plastics and for many other applications until the 1980s. They are toxic, persistent and bioaccumulate in terrestial and aquatic biosystems and due to atmospheric effects they are ubiquitous in the environment. Sediment samples from a round robin program (SETOC 2008/4, Wepal, ...


    By BÜCHI Labortechnik AG

  • Dioxin and PCB determination in foodstuffs

    SpeedExtractor E-914: Pressurized solvent extraction for the determination of dioxins and PCBs in dairy, egg, pork and fish The determination of dioxins and PCBs in foodstuffs is performed to monitor the potential exposure to humans. A reliable and fast  method is introduced. Proficiency test samples were extracted with the SpeedExtractor E-914, followed by an automated clean-up ...


    By BÜCHI Labortechnik AG

  • Detection of PCB on gauze wipes

    MATRIX: Cotton gauze pad (wipe) ANALYTE: PCB RANGE OF DETECTION: Low range: 5 to 100 mg per wipe, High range: 25 to 500 mg per wipe MATERIALS: PCB RaPID AssayÒ Kit and Sample Diluent. RaPID Prepä PCB Sample Extraction Kit. Reagents: hexane (pesticide grade). Equipment: 3 inch x 3 inch cotton gauze pads ...


  • 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 ...


  • RaPID Assay PCB in soil application

    Intended Use For detection of Polychlorinated Biphenyls (PCB’s) (as Aroclor 1254) in soil. For testing in other matrices, please contact our technical support department at 1-800-544-8881. Materials Required but Not Provided SDI Sample Extraction Kit (Part Number: A00137EA/A00137EB) Procedural Notes and Precautions ...


  • Analysis of PCB in water using the envirogard test system

    MATRIX: Water ANALYTE: PCB LIMIT OF DETECTION: Aroclor 1248: 1 ppm Aroclor 1260: 2 ppm Aroclor 1242: 2 ppm Aroclor 1254: 1.1 ppm BACKGROUND: This application describes a field screening method for determining PCB concentrations in water. A chemical reaction is induced that causes a color change ...


  • Differentiating Polychlorinated Biphenyls (PCB’s) by GC / FID / ECD

    The analytical chemistry of PCB’s is rigorous, demanding the highest quality in sample preparation and analytical technique. Insufficient sample extraction and inappropriate methods of sample clean-up are the most common sources of error in PCB analysis, which causes significant interference in the chromatography. However, even in relatively clean samples the problem remains to confidently ...


    By Buck Scientific Inc

  • Detection of PCB in water using the ensys test kit

    MATRIX: Water ANALYTE: PCB LIMIT OF DETECTION: 1260: 50 ppb 1254: 50 ppb 1248: 100 ppb 1242: 200 ppb 1232: 400 ppb 1016: 400 ppb MATERIALS: Ensys PCB 12 Test Kit, item # 7020301. Ensys PCB Soil Extraction Kit #7020300EA. Clean tap or deionized water. Equipment: Ensys Field System ...


  • Analysis of PCB in water using the Dtech test system

    MATRIX: Water ANALYTE: PCB LIMIT OF DETECTION: Color Card: 100 ppb (as aroclor 1254), DTECHTOR meter: 50 ppb (as aroclor 1254) BACKGROUND: This application describes a field screening method for determining PCB concentrations in water. A 1:2 dilution of the sample in methanol is made to minimize adsorptive losses. A ...


  • Method of low temperature pyrolysis as an answer for PCBs utilization.

    When people buy new computers, TV-sets or trendy mobile phones they do not think much about the future of substituted models. In a consumer society where devices are changed due to their obsolescence rather than break down the problem of pollution by e-wastes becomes more relevant. Disposal of printed circuit ...


    By Technokomplex

  • Soil Vapor Extraction (In Situ)

    Introduction Soil vapor extraction (SVE) is an in situ unsaturated (vadose) zone soil remediation technology in which a vacuum is applied to the soil to induce the controlled flow of air and remove volatile and some semivolatile contaminants from the soil. The gas leaving the soil may be treated to recover or destroy the contaminants, depending on local and state air discharge regulations. ...

  • Detection of PCB on gauze wipes using the rapid assay test system

    MATRIX: Cotton gauze pad (wipe) ANALYTE: PCB RANGE OF DETECTION: Low range: 5 to 100 mg per wipe. High range: 25 to 500 mg per wipe MATERIALS: PCB RaPID AssayÒ Test Kit (A00133) and Sample Diluent (A00136). PCB Wipe Sample Extraction Kit (A00137WA). Reagents: Methanol (ACS Reagent grade). Equipment: 3 inch x 3 ...


  • Detection of polychlorinated biphenyls (PCBs) in concrete using the dtech test system

    MATRIX: Concrete ANALYTES: Polychlorinated biphenyls (PCBs) RANGE OF DETECTION: DTECHTOR: 500 ppb to 25 ppm (as aroclor 1254). Color Card: 1 ppm to 25 ppm (as aroclor 1254) MATERIALS: DTECH PCB Test Kit. DTECH PCB Sample Extraction Kit. Reagents: table salt (sodium chloride) or salt packets used by restaurants ...


  • Application of a Tenax model to assess bioavailability of PCBs in field sediments

    Recent literature has shown that bioavailability‐based techniques, such as Tenax extraction, can estimate sediment exposure to benthos. In our previous study, Tenax extraction was used to create and validate a literature‐based Tenax model (TM) to predict oligochaete bioaccumulation of polychlorinated biphenyls (PCBs) from sediment; however, its ability to assess sediment remediation was ...


    By John Wiley & Sons, Ltd.

  • Detection of polychlorinated biphenyls (PCBs) in concrete using the ensys test system

    MATRIX: Concrete ANALYTES: Polychlorinated biphenyls (PCBs) RANGE OF DETECTION: Aroclor 1254: 0.5 ppm Aroclor 1260: 0.5 ppm Aroclor 1248: 1.0 ppm Aroclor 1242: 2.0 ppm Aroclor 1232: 4.0 ppm Aroclor 1016: 4.0 ppm MATERIALS: Ensys PCB in Soil Test Kit. Ensys PCB Sample Extraction Kit. Reagents: table salt ...


  • Application of a Tenax model to assess bioavailability of PCBs in field sediments

    Bioavailability has been estimated in the past using equilibrium partitioning‐based biota‐sediment accumulation factors; however, these values are not always reliable using field‐collected sediments likely due to varying amounts of different types of organic carbon, particularly black carbon, in sediments. Therefore, improving approaches to better evaluate contaminant bioavailability in sediment ...


    By John Wiley & Sons, Ltd.

  • Analytical methods for PCBs and organochlorine pesticides in environmental monitoring and surveillance: a critical appraisal

    Abstract  Analytical methods for the analysis of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) are widely available and are the result of a vast amount of environmental analytical method development and research on persistent organic pollutants (POPs) over the past 30–40 years. This review summarizes procedures and examines new approaches for ...


    By Springer

  • Using Solid Phase Extraction for Determination of Contaminants in Water

    Pesticides, Polychlorinated Biphenyls (PCBs), andpharmaceuticalsare a worldwide contamination problem. Because these contaminates are long lived in the environment and bioaccumulate throughout the food chain a great deal of research and regulations has been implemented. Several major US water bodies such as the Hudson River, St. Lawrence River, Fox River and the Great Lakes have been contaminated ...


    By Horizon Technology, Inc.

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