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Scaling Down EPA Methods 8270 and 625: Solid Phase Extraction of 100 mL Samples or Less

UCT, Inc.
28 Jun 2017

The EPA has updated methods 8270 (8270E) and 625 (625.1) to both now permit the use of solid phase extraction (SPE) to analyze for semi-volatile organic compounds (SVOCs) in aqueous samples and TCLP leachates. The revised methods will also now allow more sensitive and selective instrumentation for analyte detection and quantitation, such as GC/MS with large volume injection (e.g. PTV), GC/MS in SIM mode, ion trap MS, and tandem MS. As a result of these enhanced technological advancements, smaller sample sizes can now be utilized to obtain required method detection limits, reducing solvent and standard consumption and overall sample preparation time. This application note describes a reliable, efficient, and cost-effective SPE method utilizing two stacked cartridges for the extraction of 100 mL water samples or less.

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Enviro-Clean® Universal Cartridges

UCT, Inc.

These cartridges are designed to meet large volume, real world samples. The frits and sorbent bed resist plugging, the format fits several types of manual and automated extraction systems. Various bonded phases available including C18, C8, DVB, & graphitized carbon black.

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Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity.  Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.Solid-Phase ExtractionSolid-phase extraction (SPE) is used for clean-up, extraction and concentration of semi-volatile or non-volatile analytes from complex mixtures including blood, urine and food samples. Multiple formats are available for conducting SPE, including prepacked SPE cartridges, disks and microplates, as well as SPE sorbent powders for manual packing. SPE systems can be used to automate the process and extract multiple samples at once. Solid-phase microextraction (SPME) and supported liquid extraction (SLE) products are also available in the same formats. Find the best SPE, SLE and SPME equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Water PurificationThere are a number of water purification methods available to remove contamination from laboratory water. These systems include demineralization, reverse osmosis, filtration and ultrafiltration. A combination of methods is sometimes necessary to achieve purified water suitable for use in experiments.Sample PreparationSample preparation can improve the quality and speed of separation techniques. Products to assist sample preparation include filtration equipment, evaporators, membranes and sieves.EPA MethodsEPA methods are procedures approved by the U.S. Environmental Protection Agency for monitoring and analyzing environmental pollutants, including air, water, and soil samples. These methods are critical in ensuring public health and environmental safety. Explore EPA methods and tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.Food SafetyFood safety describes the prevention of food-borne illnesses. Contamination with a variety of pathogens can be prevented with adequate temperature control, hygiene and labeling. Food samples can be tested using GC/MS, HPLC, SPE, and qPCR to ensure their adherence to regulations.Water Security MonitoringWater AnalysisAnalytical methods used to test the purity of drinking water include determining the level of contaminants abides to the level set by the Environmental Protection Agency (EPA).Environmental AnalysisEnvironmental analysis describes a variety of tests that determine the effect of chemicals, processes and particulates such as persistent organic pollutants (POPs) have on the environment.Solid Phase Extraction (SPE)Solid phase extraction (SPE) is a sample preparation technique used to separate and concentrate analytes from complex mixtures. It is widely used in environmental, pharmaceutical, and clinical analysis. SPE provides higher sensitivity and selectivity compared to traditional liquid-liquid extraction methods, making it essential for accurate and reproducible results. Explore SPE tools and systems in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.

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