epa method 5 Articles

  • US EPA Method 8270 Semivolatiles on the Equity-5

    US EPA Method 8270 describes the analysis of a wide variety of semivolatile compounds by GC/MS. In this application, the Equity-5 was used to analyze 74 compounds commonly targeted for analysis by environmental laboratories. The analysis also included 6 internal standards and 8 surrogates. The Equity column showed excellent peak shape and response for both basic and acidic compounds, including ...


    By MilliporeSigma

  • Modeling for NAAQS Part 1: How to select the appropriate output for NO2

    The U.S. National Ambient Air Quality Standards (NAAQS) for 1-hour SO2, 1-hour NO2, and 24-hour PM2.5 use a very particular format. It is very important for all modelers (both within and outside of the U.S.) to understand how AERMOD handles this. In particular, U.S. users need to be familiar with the ...

  • On PM 2.5 Filters, Let’s just clear the air between us; ok?

    In the area of a former military building complex in the Chaoyang District of Beijing is a unique and thriving artistic community.  In the middle of this art district, is a strange 7-meter tall tower shaped like an avant-garde metallic pineapple.  Designed by Dutch artist Daan Roosegaarde, it is both an artistic creation and a functional tool meant to test a possible solution for ...


    By Sterlitech Corporation

  • Analyzing Stack Gas Semivolatiles, Using Supelpak-2 Adsorbents and Capillary GC (Modified Method 5, US EPA SW-846)

    The demanding detection limits required for air sampling by Modified Method 5 (US EPA SW-846, Method 0010) necessitates extensive cleaning and meticulous handling of the adsorbent cartridge/trap during sampling and analysis. Supelpak-2 adsorbent is cleaned in accordance with and meets the purity criteria of EPA SW-846, Method 0010, for testing semivolatile emissions from incinerator stationary ...


    By MilliporeSigma

  • Dioxins and Furans on the Equity-5

    Dioxins and furans are byproducts of several different industrial processes, including incineration and paper bleaching. The extreme toxicity of several of these compounds has made their analysis in environmental samples increasingly important. In this application, the 60m x 0.25mm ID x 0.25µm Equity-5 was used to separate all 17 of the 2,3,7,8-substituted PCDDs and PCDFs listed in US EPA ...


    By MilliporeSigma

  • US EPA Method 8081 Chlorinated Pesticides on Equity-1701

    US EPA method 8081 describes the GC/ECD analysis of organochlorine pesticides and requires the use of a primary and confirmation column. In this application, 20 compounds listed in method 8081, plus two surrogates, were analyzed on the Equity-1701 column. These same run conditions will separate all 22 compounds on an Equity-5 column of similar dimensions. The elution order is different between ...


    By MilliporeSigma

  • EPA Proposes Two Test Methods and Guidance for Evaluating Antimicrobial Pesticides

    The U.S. Environmental Protection Agency (EPA) has recently announced the availability of two proposed test methods and associated testing guidance for evaluating antimicrobial pesticides against two biofilm bacteria, Pseudomonas aeruginosa and Staphylococcus aureus, for comments.  EPA states that registrants of antimicrobial products with public health claims are “required to submit ...


    By Bergeson & Campbell, P.C.

  • U.S. EPA approves first enzymatic method for SDWA reporting of nitrate

    The US Environmental Protection Agency periodically updates methods laboratories can use for protecting the quality of the nation's drinking water.  The Safe Drinking Water Act office of the EPA published its list of Alternate Test Protocols (ATP) in the Federal Register in July 2016. ...


    By NECi Superior Enzymes

  • EPA - 40 CFR Part 51, Appendix M - Test Method 205

    DEPARTMENT OF ENVIRONMENTAL PROTECTION (DEP)   40 CFR PART 51   ...


    By Environics, Inc.

  • Trace Analysis of PAHs using EPA methods 3541, 3545 and 8100

    The Extraction System B-811 and the Syncore Analyst parallel concentrator from Buchi as well as the Pressurized Solvent Extractor from Applied Separations were evaluated for the pretreatment of samples containing PAHs. Recoveries of extraction and subsequent concentration using acetone-n-hexane (1+1) were 70-95% for 2 ring and 90-100% for less volatile 3-5 ring PAHs. A good precision (95% ...


    By BÜCHI Labortechnik AG

  • Fast GC-MS Analysis of US EPA Method 8270D Semivolatiles Using Supelco SLB-5ms

    US EPA Method 8270D specifies a procedure for the determination of semivolatiles in solid waste and ground water samples. The method specifies that all analyses must be completed within 12 hours of meeting specific MS tune criteria. In this application, the principles of fast GC were applied to analyze a typical 8270 analyte list in under 8.5 minutes. This was achieved by using a 20 m x 0.18 ...


    By MilliporeSigma

  • Analysis of US EPA Method 632 Carbamate and Urea Pesticides Using Ascentis™ C18

    US EPA Method 632 specifies a procedure for the determination of carbamate and urea pesticides in municipal and industrial wastewaters. The suitability of the Ascentis C18 for the separation of the nineteen analytes specified in the method is demonstrated. An Ascentis C18, 25 cm x 4.6 mm I.D., 5 μm particles was used to acheive separation of all compounds, under gradient conditions.  All ...


    By MilliporeSigma

  • Top 5 Climate and Energy Stories for 2014

    The U.S. energy picture has shifted dramatically in recent years. The country is currently enjoying booming domestic energy production from multiple sources. And yet, signs of uncertainty abound, especially with mounting climate risks and some energy sectors thriving more than others. We will be watching President Obama's State of the Union address on Tuesday to hear ...

  • Screening method for 2,4-d and silvex in tclp leachate

    MATRIX: Leachate of solid or liquid waste as described in Toxicity Characteristic Leaching Procedure ANALYTE: 2,4-D and Silvex (2,4,5-TP) RANGE OF DETECTION: 1 to 50 ppm 2,4-D, 0.2 to 10 ppm Silvex MATERIALS: 2,4-D RaPID AssayÒ kit and 2,4-D Sample Diluent (available from SDI). Silvex RaPID AssayÒ kit ...


  • Factors Affecting Oil in Water Testing Methods

    Various factors need to be considered when comparing methods to measure oil and grease in water.  Whether you are trying to meet effluent limits for an NPDES (National Pollutant Discharge Elimination System) permit, comply with oil and grease limits for the Clean Water Act (CWA), or an industry satisfying a POTW’s (Publically Owned Treatment Works) discharge permit, it is ...


    By Spectro Scientific

  • Evaporator Limits Boron to 5 PPM at award-winning chemical plant

    Problem: The biggest challenge confronting Rohm & Haas Corp. in building a wastewater plant for its chemical facility in Elma, Wash., was meeting Washington State Dept. of Ecology limitations on boron of 5 ppm. The Elma plant manufactures sodium borohydride, a versatile chemical used in a variety of applications ranging from the generation of sodium hydrosulfite for reductive bleaching of ...


    By Oil Skimmers, Inc.

  • EPA Compliant Letter

    APPENDIX I (Continued) B. Air Monitoring Equipment There are different methods available for air monitoring. These include colorimetric detector tubes (e.g., National Draeger, Sensidyne, Matheson-Kitagawa, MSA) and realtime remote sensing monitors (e.g., PureAire Monitoring Systems). NOTE: These air monitoring methods apply to enclosed areas, including greenhouse soil ...

  • Field Test Experiments to Validate The CEN Standard Measurement Method For PM2,5

    For air quality across the European Union to be assessed on a consistent basis, Member States need to employ standard measurement techniques and procedures, following Community Directive 96/62/EC on ambient air quality assessment and management [1], and Directive 1999/30/EC (1st EC Air Quality Daughter Directive) [2], which sets the parameters specific to the assessment of particulate matter (and ...


  • A method for reducing purge volumes in deep monitoring wells: a purging experiment.

    Regulatory agencies often require three well casing volumes or more be purged prior to collection of groundwater samples for chemical analysis. Costs are high for testing and disposing of potentially hazardous purge water; therefore, efforts must be made to minimize waste-water volume while obtaining representative groundwater samples. Lockheed sponsored a purge experiment on two deep monitor ...


    By Hargis + Associates Inc

  • Greenhouse gas emissions from waste management-assessment of quantification methods

    Of the many sources of urban greenhouse gas (GHG) emissions, solid waste is the only one for which management decisions are undertaken primarily by municipal governments themselves and is hence often the largest component of cities’ corporate inventories. It is essential that decision-makers select an appropriate quantification methodology and have an appreciation of methodological ...

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you