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  • Cell design  (2)
  • MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT  (2)
  • Capillary columns, 100 μm I.D.  (1)
  • 1
    Electronic Resource
    Electronic Resource
    On-column injection technique for use with 100 μm I.D. capillary columns (1984)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 7 (1984), S. 697-699 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography, GC ; Capillary columns, 100 μm I.D. ; On-column injector ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240071206
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Evaluation of electron capture cell designs for use in high resolution capillary column gas chromatography (1983)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 6 (1983), S. 427-430 
    Details
    ISSN: 0935-6304
    Keywords: Capillary GC ; Electron capture detector ; Cell design ; Time constant, purge flow ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A comparison of the effects on peak shape is made between a 350 and 100 microliter displaced coaxial and a 350 microliter concentric cylinder electron capture cell. Peaks as fast as W1/2 = 0.5 second were detected using electronics operating in the constant current mode. The measured peak shapes are compared to those obtained by computer simulation assuming either complete mixing or plug-like flow within ECD cell. The advantage of controlling the flow pattern through the cell to obtain plug-like flow is demonstrated. Differences in peak shape between the displaced coaxial and concentric cylinder cells of the same volume are explained in terms of the electrostatic fields within the cells.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240060805
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A micro-volume electron capture detector for use in high resolution capillary column gas chromatography (1983)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 6 (1983), S. 651-654 
    Details
    ISSN: 0935-6304
    Keywords: Capillary GC ; Electron capture detector ; Cell design ; Hydrogen carrier gas ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new design for an electron capture detector cell is described. The cell is compatible with the requirements of high resolution capillary columns and is shown to be useful in applications that require high analysis speed. A unique method of sample introduction reduces the problems of sample loss by adsorption on the surfaces of the cell. Previously reported problems of sample loss by adsorption on active surfaces within the cell when using hydrogen carrier gas are shown to have been eliminated. Examples are shown demonstrating the increased speed of analysis that can be obtained when using hydrogen carrier gas and 100 micron diameter columns.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240061203
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    Paper (German National Licenses)
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  • 4
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    Combination of an electrolytic pretreatment unit with secondary water reclamation processes (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The design and fabrication of a flight concept prototype electrolytic pretreatment unit (EPU) and of a contractor-furnished air evaporation unit (AEU) are described. The integrated EPU and AEU potable water recovery system is referred to as the Electrovap and is capable of processing the urine and flush water of a six-man crew. Results of a five-day performance verification test of the Electrovap system are presented and plans are included for the extended testing of the Electrovap to produce data applicable to the combination of electrolytic pretreatment with most final potable water recovery systems. Plans are also presented for a program to define the design requirements for combining the electrolytic pretreatment unit with a reverse osmosis final processing unit.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-147448 , MDC-G4787
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Potable water recovery for spacecraft application by electrolytic pretreatment/air evaporation (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A process for the recovery of potable water from urine using electrolytic pretreatment followed by distillation in a closed-cycle air evaporator has been developed and tested. Both the electrolytic pretreatment unit and the air evaporation unit are six-person, flight-concept prototype, automated units. Significantly extended wick lifetimes have been achieved in the air evaporation unit using electrolytically pretreated, as opposed to chemically pretreated, urine feed. Parametric test data are presented on product water quality, wick life, process power, maintenance requirements, and expendable requirements.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: ASME PAPER 75-ENAS-49 , Intersociety Conference on Environmental Systems; Jul 21, 1975 - Jul 24, 1975; San Francisco, CA
    Format: text
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    NASA TECHNICAL REPORTS
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