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Tuesday, May 19, 2020 | History

1 edition of Evaluation of sample extract cleanup using solid-phase extraction cartridges found in the catalog.

Evaluation of sample extract cleanup using solid-phase extraction cartridges

Evaluation of sample extract cleanup using solid-phase extraction cartridges

  • 391 Want to read
  • 16 Currently reading

Published by U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory in Las Vegas, NV .
Written in English

    Subjects:
  • Environmental laboratories -- United States -- Equipment and supplies,
  • Soils -- United States -- Sampling,
  • Refuse and refuse disposal -- United States

  • Edition Notes

    StatementViorica Lopez-Avila ... [et al.]
    ContributionsLopez-Avila, Viorica, Environmental Monitoring Systems Laboratory (Las Vegas, Nev.)
    The Physical Object
    Pagination11 p. ;
    Number of Pages11
    ID Numbers
    Open LibraryOL14681975M

    To simplify sample extract cleanup, the practicality of the use of commercially available disposable cartridges is investigated. These cartridges contain specified amounts of standardized adsorbents such as Florisil, alumina, and silica gel, or silica modified to Cited by: 3. Journal Article: Interferences in solid-phase extraction using C bonded porous silica cartridges Title: Interferences in solid-phase extraction using C .

    Solid phase extraction is an effective technique for cleaning up and concentrating samples, prior to HPLC or GC analysis. The technique offers targeted selectivity for analytes of interest, versatility for a wide range of sample volumes, can be easily automated for high-throughput, and is performed by following quick and simple methods (load. tial single-phase extraction of 10 g sample with 10 mL acetonitrile, followed by liquid–liquid parti-tioning formed by addition of 4 g anhydrous MgSO4 plus 1 g NaCl. Removal of residual water and cleanup are performed simultaneously by us-ing a rapid procedure called dispersive solid-phase extraction (dispersive-SPE), in which mg anhy-.

    Today, solid-phase extraction (SPE) has become a widely acclaimed sample preparation tool for analytical chemists. This technique was developed as an alternative to liquid-liquid extraction (LLE). Historical evidences and some scientists claimed that the first literature reference to SPE was found in Bible (Riemon and Walton, ). @article{osti_, title = {Extraction and detection of pesticide residues from air filter inserts using supercritical carbon dioxide}, author = {Zemanian, T.S. and Robins, W.H. and Lee, R.N. and Wright, B.W.}, abstractNote = {Trace quantities of airborne herbicide residues were collected on adsorbent bed cartridges and were subsequently extracted from the adsorbent using supercritical.


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Evaluation of sample extract cleanup using solid-phase extraction cartridges Download PDF EPUB FB2

EVALUATION OF SAMPLE EXTRACT CLEANUP USING SOLID-PHASE EXTRACTION CARTRIDGES by __ Viorica Lopez-Avila, Janet Benedicto, and June Milanes (^ Acurex Coiporation i Environmental Systems Division ^ Mountain View, California I Contract Number 1 1 Project Officer Werner F. Beckert Quality Assurance Division Environmental Monitoring Systems.

A draft protocol for the use of SPE cartridges for sample extract cleanup was prepared and tested with spiked synthetic matrices and with spiked extracts of real samples. The results of this study indicate that such use of SPE cartridges is feasible for a variety of matrices and target compounds.

The complete report, entitled "Evaluation of Sample Extract Cleanup Using Solid- Phase Extraction Cartridges," (Order No. PB AS; Cost: $, subject to change) will be available only from: National Technical Information Service Port Royal Road Springfield, VA Telephone: The EPA Project Officer can be.

Evaluation of sample extract cleanup using solid-phase extraction cartridges Author: Viorica Lopez-Avila ; Environmental Monitoring Systems Laboratory (Las Vegas, Nev.). This paper describes the application of solid-phase extraction cartridges containing silica gel, Florisil, or alumina to the fractionation and cleanup of sample extracts containing organochlorine pesticides, polychlorinated biphenyls, and phthalate esters.

Solid-phase extraction for liquid samples became a widely used laboratory technique with the introduction of disposable sorbent cartridges containing porous, siloxane-bonded silica particles, sized to allow sample processing by gentle suction (Figure 2).A typical solid-phase extraction cartridge consists of a short column (generally an open syringe barrel) containing a sorbent with a nominal.

Solid phase extraction (SPE) is a technique designed for rapid, selective sample preparation and purification prior to chromatographic analysis. Using liquid chromatography principles to control selectivity, SPE provides the sample cleanup, recovery, and concentration necessary for accurate quantitative analysis.

The EU’s Commission Regulation (EC) No / sets a maximum μg/kg concentration for AFB1 used to produce cereal products for infants and children. 5 Solid Phase Extraction (SPE) is a popular choice for sample cleanup prior to HPLC or LC/MS analysis of aflatoxin samples. Broadly, two modes of SPE are employed: bind and elute and.

US EPA "Evaluation of Sample Extract Cleanup Using Solid-Phase Extraction Cartridges," Project Report, December Evaluation of SW Method for W F Beckert. Request PDF | Evaluation of alternative sorbents for dispersive solid-phase extraction clean-up in the QuEChERS method for the determination of pesticide residues in rice by liquid chromatography.

19 Sep-Pak Cartridges for Rapid Sample Preparation Plus, Light and Classic Cartridges 20 Benefits of Sep-Pak Cartridges 36 Table 5. Nominal Weight of Sorbent in Sep-Pak ® 21 Sorbent Chemistries Vac Cartridges 29 Choosing a Cartridge 70 Figure 2.

General Elution Protocol for Normal Phase 37 Solid Phase Extraction Methods Development 72 Figure 3. Solid-phase analytical derivatization (SPAD) is a sample preparation method where both solid-phase extraction and analytical derivatization are combined to a one-pot reaction wherein extraction and derivatization occur on the solid phase with no intermediate isolation of the analyte.

Solid Phase Extraction Solid-phase extraction (SPE) is a sample preparation method where the compounds that are dissolved or suspended in a liquid mixture are separated from other compounds depending on their physical and chemical properties.

Solid-phase extraction is designed for rapid sample preparation and purification prior to. Solid Phase Extraction is a fast and efficient sample preparation technique for cleanup or concentration for analysis, HPLC, GC, TLC, UV, IR and an excellent tool for method development that is used by most chromatographers today.

SPE is a form of digital (step-wise) chromatography designed to extract, partition, and / or adsorb one or more components from a liquid phase (sample) onto a. Using Solid Phase Extraction for Multi-Cartridge Extractions and Extract Clean-up Procedures.

Objective • Utilize the FMS / Turbo Trace SPE system’s • Both cartridges conditioned with a 1% NH 3OH solution • Cartridges independently dried with N 2. Simplifying Solid-Phase Extraction Waters introduced Oasis HLB ineffectively changing the way scientists performed solid-phase extraction (SPE), as well as their expectations of this process.

Constructed with a water-wettable copolymer that is stable from pH 0–14, Oasis HLB created a whole new range of solid-phase extraction. A number of options were explored for the clean-up of lipids, proteins and other impurities present in the matrix.

Zirconium dioxide-based sorbents as dispersive solid-phase extraction (d-SPE) and protein-lipid removal filter cartridges (Captiva ND Lipids) provided the best results for GC-MS and LC-MS analysis by: Isolate trace organics from large-volume aqueous matrices using the Thermo Scientific™ Dionex™ AutoTrace™ SPE system.

The automated system traps and concentrates analytes of interest so that one run can accommodate 6 samples in 2 to 3 hours with only 15 minutes of operator time.

Video for PFAS Extraction - EPA Method /, DoD and modified methods. Febru Solid Phase Extraction Method Development Tips and Tricks Carol Haney Ball, Ph.D.

Application Scientist – Cartridges dried under vacuum for 10 minutes before the equilibration step Sample clean-up – SampliQ OPT Solid Phase Extraction. AN LC-MS/MS Method for the Determination of Raloxifene and its Glucuronide Metabolites from Human Plasma Using SPE Micro Elution; AN Selective and Highly Accurate Analysis of Desmopressin from Human Plasma; AN Increased Speed and Sample Throughput of Opioid Analysis from Human Urine Using Micro-Elution Solid Phase Extraction.Solid Phase Extraction If extract requires cleanup for phthalates esters proceed to Florisil or Alumina cleanup stages Extract Clean-upFlorisil or Alumina Add sample extract to the cartridge then rinse vial with 2 mL of hexane.

UCT, LLC • Bartram Road • Bristol, PA • • • chem File Size: 4MB. Wang et al. reported a high throughput sample preparation method utilizing mixed-mode solid phase extraction (SPE) in well plate format for the determination of free arachidonic acid in plasma by LC-MS/MS.

J. Knutsson et al. reported an uncertainty budget for the determination of fully labile Cu in water using a DGT passive by: 2.