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Automated Cryogenic Sampling And Gas Chromatographic Analysis Of Ambient Vapor Phase Organic Compounds
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Book Synopsis Automated Cryogenic Sampling and Gas Chromatographic Analysis of Ambient Vapor-phase Organic Compounds by : Karen D. Oliver
Download or read book Automated Cryogenic Sampling and Gas Chromatographic Analysis of Ambient Vapor-phase Organic Compounds written by Karen D. Oliver and published by . This book was released on 1985 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Automated Cryogenic Sampling and Gas Chromatographic Analysis of Ambient Vapor-phase Organic Compounds System Design by : Joachim D. Pleil
Download or read book Automated Cryogenic Sampling and Gas Chromatographic Analysis of Ambient Vapor-phase Organic Compounds System Design written by Joachim D. Pleil and published by . This book was released on 1983 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EPA-600/4 written by and published by . This book was released on 1988 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Gas Chromatographic Detection of Vapor-Phase Organics in Ambient Air by : JW. Bozzelli
Download or read book Selective Gas Chromatographic Detection of Vapor-Phase Organics in Ambient Air written by JW. Bozzelli and published by . This book was released on 1980 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-resolution capillary-column gas chromatography (GC) efficiently separates the many organic compounds that exist in ambient air. However, the identification of these compounds by retention times alone is difficult. The response ratios of sample components on several different types of GC detectors can be used to identify selected peaks more positively. Electron capture (ECD), photoionization (PID), and flame ionization (FID) detectors have been evaluated in this study. Samples split between an ECD and FID are readily analyzed for such electron-capturing species as carbon tetrachloride and tetrachloroethylene. Replicate samples are run on a PID for identification of peaks due to aromatic compounds and other unsaturated materials. This system of three detectors gives sufficient information to confirm the identity of the compounds that have been chosen for quantitation.
Book Synopsis Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air by : William T. Winberry
Download or read book Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air written by William T. Winberry and published by . This book was released on 1988 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 1986 EPA/APCA Symposium on Measurement of Toxic Air Pollutants by :
Download or read book Proceedings of the 1986 EPA/APCA Symposium on Measurement of Toxic Air Pollutants written by and published by . This book was released on 1986 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Method for Concentrating and Determining Trace Organic Compounds in the Atmosphere by :
Download or read book A Method for Concentrating and Determining Trace Organic Compounds in the Atmosphere written by and published by . This book was released on 1972 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of subpart-per-billion (sub-ppb) levels of volatile organic compounds in the atmosphere by flame ionization gas chromatography requires sample sizes of at least several hundred milliters of air. Cryogenic methods of concentrating trace compounds before analysis have the disadvantage of also concentrating large amounts of water, a serious problem in gas-liquid chromatography. A simple method was developed for sample collection and concentration using porous polymer adsorbants with the unique properties of high capacity for retention of organic compounds and minimal capacity for retention of water. This technique was used to determine sub-ppb levels of volatile organic compounds in a typical rural atmosphere. Probable sources of these organic compounds were vehicle exhaust, biological processes, natural gas leaks, and industrial chemicals.
Book Synopsis Report summaries by : United States. Environmental Protection Agency
Download or read book Report summaries written by United States. Environmental Protection Agency and published by . This book was released on 1983 with total page 1584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rapid, Automated Gas Chromatographic Detection of Organic Compounds in Ultra-pure Water by :
Download or read book Rapid, Automated Gas Chromatographic Detection of Organic Compounds in Ultra-pure Water written by and published by . This book was released on 2000 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: An automated gas chromatography was used to analyze water samples contaminated with trace (parts-per-billion) concentrations of organic analytes. A custom interface introduced the liquid sample to the chromatography. This was followed by rapid chromatographic analysis. Characteristics of the analysis include response times less than one minute and automated data processing. Analytes were chosen based on their known presence in the recycle water streams of semiconductor manufacturers and their potential to reduce process yield. These include acetone, isopropanol, butyl acetate, ethyl benzene, p-xylene, methyl ethyl ketone and 2-ethoxy ethyl acetate. Detection limits below 20 ppb were demonstrated for all analytes and quantitative analysis with limited speciation was shown for multianalyte mixtures. Results are discussed with respect to the potential for on-line liquid process monitoring by this method.
Book Synopsis The Determination of Volatile Organic Compounds at the [micro]g/1 Level in Water by Gas Chromatography by : Thomas A. Bellar
Download or read book The Determination of Volatile Organic Compounds at the [micro]g/1 Level in Water by Gas Chromatography written by Thomas A. Bellar and published by . This book was released on 1974 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring Methods for Toxics in the Atmosphere by : Walter L. Zielinski
Download or read book Monitoring Methods for Toxics in the Atmosphere written by Walter L. Zielinski and published by ASTM International. This book was released on 1990 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ASTM Standards on Environmental Sampling by : American Society for Testing Materials
Download or read book ASTM Standards on Environmental Sampling written by American Society for Testing Materials and published by ASTM International. This book was released on 1997 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete reference of American Society for Testing and Materials standards on environmental sampling, covering standards for sampling soil, water, particulate matter, and vapors in workplaces, wells, laboratories, and natural areas, with guides for safe practices in areas such as construction, chemical testing, groundwater monitoring, and air monitoring at waste management facilities. Annotation copyright by Book News, Inc., Portland, OR
Book Synopsis Indexes by : United States. Environmental Protection Agency
Download or read book Indexes written by United States. Environmental Protection Agency and published by . This book was released on 1983 with total page 1760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Automated Determination of Volatile Organic Contaminants in Ambient Air And/or Soil Gas by Gas Chromatography with Selective Detectors by : E. Almasi
Download or read book The Automated Determination of Volatile Organic Contaminants in Ambient Air And/or Soil Gas by Gas Chromatography with Selective Detectors written by E. Almasi and published by . This book was released on 1991 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volatile Organic Contaminants (VOCs) are major air pollutants in our environment. Whole air sampling has become the primary method for sampling air with EPA method TO-14. With this technique, an air sample is drawn through a cryogenically cooled trap to freeze out and concentrate VOC contaminants. The trap is then quickly heated and the VOCs are transferred to a cryogenically cooled column. Several variations and improvements have been studied: 1) automation for multiple samples, 2) use of a variable temperature absorption trap to eliminate cryogenics and a water removal device, and 3) elimination of the requirement for a cryogenically cooled oven. Two automated analytical systems are discussed: a fixed and a variable volume system. Precision, method detection limits, system linearity, and carryover are reported. Finally, ambient, dry-cleaner, and indoor air samples are analyzed using the techniques described.
Book Synopsis Field Sampling Procedures Manual by :
Download or read book Field Sampling Procedures Manual written by and published by . This book was released on 1992 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AUTOMATED HIGH-SPEED REPETITIVE GC SYSTEMS FOR VAPOR ANALYSIS (GAS CHROMATOGRAPHY). by : CHRISTINE LYNN RANKIN
Download or read book AUTOMATED HIGH-SPEED REPETITIVE GC SYSTEMS FOR VAPOR ANALYSIS (GAS CHROMATOGRAPHY). written by CHRISTINE LYNN RANKIN and published by . This book was released on 1991 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: which successive, near real-time analyses are required.
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