EPA method Articles
-
A Guide to the Novel Shimadzu GC-MS BFB Tuning for the Analysis of Volatile Organic Compounds in Environmental Samples
The Environmental Protection Agency (EPA) establishes strict BFB tuning criteria to ensure the quality of the results when analyzing volatile compounds. Due to many challenges inherent to GC-MS Purge and Trap instruments required for this analysis, several GC-MS instruments have difficulties in passing the required US EPA BFB tuning criteria or remaining stable over prolonged operations period. ...
-
Analysis of US EPA Method 8270D Semivolatiles Using a 30 m x 0.25 mm I.D., 0.50 μm SLB-5ms
Application Note 401: US EPA Method 8270D specifies a procedure for the determination of semivolatiles in solid waste and ground water samples. The long list of analytes includes compounds of a variety of functionalities. A 0.25 μm df column is commonly used for this method, as it will allow for a short analysis time. However, the thin phase film of this dimension limits its sample capacity. ...
-
Two Headspace Solutions for the Analysis of Dissolved Gases in Water by Method RSKSOP-175
Abstract Dissolved gas analysis has been performed using a simplified headspace method following US EPA method RSKSOP-175. This method describes the preparation and analysis of dissolved gases in water. Recent developments in natural gas drilling from deep underground shale formations, using techniques such as hydraulic fracturing, have renewed interest in this method to determine dissolved gases ...
-
Analysis of US EPA Method 8270D Semivolatiles Using a 20 m x 0.18 mm I.D., 0.36 μm
Application Report 406: US EPA Method 8270D specifies a procedure for the determination of semivolatiles in solid waste and ground water samples. The long list of analytes includes compounds of a variety of functionalities. A 30 m x 0.25 mm I.D. column is commonly used for the analysis. Sometimes, a thicker phase film, such as a 0.25 mm I.D. x 0.50 μm df, is appropriate to accommodate higher ...
-
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 mm ...
-
Purge Trap for GC Analyses of Volatile Aromatic (BTEX) Compounds in Soils and Sediments
The BTEXTRAP purge trap was designed specifically for monitoring benzene, toluene, ethylbenzene, and the xylene isomers (BTEX compounds). The trap allows large amounts of methanol (used in the US EPA Method 5030 procedure for preparing soil and sediment samples) to pass through the adsorbent beds while retaining the analytes of interest. In evaluations of trap performance, relative analyte ...
-
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 ...
-
Increased laboratory productivity for ICPOES applied to U.S. EPA method 6010C
The use of an ESI SC FAST autosampler coupled to a Perkin Elmer Optima 7300 DV ICP can dramatically improve productivity for the analysis of environmental samples using EPA SW-846 Method 6010C. Sample throughput, as determined by sample-to-sample run time can be improved by as much as 100% as compared to traditional sample introduction systems and autosampler configurations. Both sample analysis ...
-
Increased laboratory productivity for ICPOES applied to U.S. EPA method 6010C
The use of an ESI SC FAST autosampler coupled to a Perkin Elmer Optima 7300 DV ICP can dramatically improve productivity for the analysis of environmental samples using EPA SW-846 Method 6010C. Sample throughput, as determined by sample-to-sample run time can be improved by as much as 100% as compared to traditional sample introduction systems and autosampler configurations. Both sample analysis ...
-
Fast, Sensitive, and Cost-effective ICPE Spectrometry Analysis of Trace Metals in Water by EPA Method 200.7
Introduction The Shimadzu ICPE-9820 multi-type ICP atomic emission spectrometer is the ideal instrument for running EPA Method 200.7. The ICPE-9820 permits simultaneous analysis of all elements, at all wavelengths, allowing high-throughput analysis with little need for dilution. The large 1-inch CCD detector with over 1 million pixels measures 110,000 wavelengths. Overflow channels prevent ...
-
Environmental Analysis of Volatile Compounds in Soil, Water and Sludge by GC / PID / DELCD
The analysis of volatile compounds (b.p. <140°C) in environmental samples represents contamination from active or recent discharges. EPA methods 502.2, 601, 602, 8010, and 8021 test for pollutants from a broad array of commercial and industrial sources, including gasoline and diesel spills, solvent discharges, and disinfection by-products. The test methods include mixtures of up to 62 ...
-
Improved Purge-Trap/GC Analysis of Volatiles in Drinking Water by US EPA Method 524.2
The VOCARB 3000 adsorbent trap is suitable for monitoring volatile organic compounds in drinking water samples, as well as in wastewater and hazardous waste samples. This adsorbent trap meets the requirements of US EPA Methods 502 and 524.2. Relative standard deviation values were less than 15% for all of the compounds listed, and less than 7% for most of the compounds. Recovery of each ...
-
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 BUCHI
-
Moscow snow reveals new air pollutants
GC-MS analysis of Moscow snow reveals new pollutants in the city air. Cities, with their traffic, industrial centers and factories, usually suffer from some degree of air pollution. Moscow, which houses all of these as well as power plants and an oil refinery, is no different. Regular monitoring of environmental pollutants is common practice in many cities and priority pollutants are detected ...
-
Inter-laboratory validation of automated SPME-GC/MS for determination of pesticides in surface and ground water samples: sensitive and green alternative to liquid–liquid extraction
An automated solid-phase microextraction gas chromatography/mass spectometry (SPME-GC/MS) method was developed for the determination of semi-volatile pesticides from several classes with a wide range of polarities in an environmental matrix, and validated according to the rigorous standards of a large commercial laboratory reporting data requiring regulatory acceptance with the purpose of ...
-
Matching Oil in Water Analyses with Regulatory Methods - Case study
When analyzing oil and grease in water while out in the field, it is important to use an EPA approved method and equipment. While the amount of oil in water is highly regulated, it can also be a challenging measurement. It is complicated by the fact that oil conies in many forms and the measurement is defined by the particular regulatory method. When EPA 1664 is the regulatory method, the "oil" ...
-
New ASTM Test Method Offers Quick and Easy Oil and Grease Measurement for Water and Soil Samples
Onsite Field Measurement of Oil and Grease A quick and easy field analysis method for determining oil and grease concentration levels is important for both offshore oil platforms and soil remediation sites.. Prior to the Montreal Protocol, infrared (IR) analysis using Freon as an extraction solvent was a widely used field and laboratory method. In 1999, the U.S. EPA promulgated Method 1664A to ...
-
Water Treatment Plant (Wtp) Optimization Techniques
Introduction Given the seemingly ubiquitous, yet episodic nature of pathogen presence in source waters, monitoring and opti-mizmg the performance of water treatment plants is an increasingly important aspect in many suppliers' plans for maintaining w;ater quality . Filtration Plant Optimization (FPO) The Filtration Plant Optimization (FPO) analysis w:as developed by the EPA to replace the ...
-
VOC control efficiency compliance test case study
Skyworks Solutions, Inc. (Skyworks) selected CK to perform a compliance emissions testing program to determine the control efficiency of a new Roto-Concentrator followed by a thermal oxidizer (RC/TOx) used to control volatile organic compounds/hazardous air pollutants (VOC/HAP) from multiple manufacturing processes. A facility air permit condition required compliance testing of the subject ...
-
Emulsion breakingtechniques for oil in water solvent extractions
Certain types of samples, such as those containing detergent, may form emulsions when doing an oil in water extraction into a solvent. The boundary between the solvent and the sample will have an emulsion layer that lias a cloudy or milky appearance as shown in tlris photo. According to U.S. EPA Method 1664, "if the emulsion is greater than one-third the volume of the solvent layer. Hie ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you