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  • 1
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    Compounds in airborne particulates - Salts and hydrocarbons (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Concentrations of 10 polycyclic aromatic hydrocarbons (PAH), the aliphatics as a group, sulfate, nitrate, fluoride, acidity, and carbon in the airborne particulate matter were measured at 16 sites in Cleveland, OH over a 1-year period during 1971 and 1972. Analytical methods used included gas chromatography, colorimetry, and combustion techniques. Uncertainties in the concentrations associated with the sampling procedures, and the analytical methods are evaluated. The data are discussed relative to other studies and source origins. High concentrations downwind of coke ovens for 3,4 benzopyrene are discussed. Hydrocarbon correlation studies indicated no significant relations among compounds studied.
    Keywords: ENVIRONMENT POLLUTION
    Type: Air Pollution Control Association; vol. 27
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Elemental composition of airborne particulates and source identification - An extensive one year survey (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Concentrations of 60 chemical elements in the airborne particulate matter were measured at 16 sites in Cleveland, OH over a 1 year period during 1971 and 1972 (45 to 50 sampling days). Analytical methods used included instrumental neutron activation, emission spectroscopy, and combustion techniques. Uncertainties in the concentrations associated with the sampling procedures, the analytical methods, the use of several analytical facilities, and samples with concentrations below the detection limits are evaluated in detail. The data are discussed in relation to other studies and source origins. The trace constituent concentrations as a function of wind direction are used to suggest a practical method for air pollution source identification.
    Keywords: ENVIRONMENT POLLUTION
    Type: Air Pollution Control Association; vol. 26
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Concentrations of trace elements and compounds in the airborne suspended particulate matter in Cleveland, Ohio, from August 1971 to August 1972 and their dependence on wind direction: Complete data listing and concentration roses (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Concentrations of 75 chemical constituents in the airborne particulate matter were measured in Cleveland, Ohio during 1971 and 1972. Daily values, maxima, geometric means and their standard deviations covering a 1-year period (45 to 50 sampling days) at each of 16 sites are presented on microfiche for 60 elements, and for a lesser number of days for 10 polycyclic aromatic hydrocarbon compounds (PAH), the aliphatic hydrocarbon compounds (AH) as a group and carbon. In addition, concentration roses showing directional properties are presented for 39 elements, 10 PAH and the AH as a group. The elements (except carbon) are shown both in terms of concentration and percentage of the suspended particulate matter.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-X-73453 , E-8795
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Extensive 1-year survey of trace elements and compounds in the airborne suspended particulate matter in Cleveland, Ohio (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Concentrations of 75 chemical constituents in the airborne particulate matter were measured in Cleveland, Ohio, during 1971 and 1972. Values covering a 1-year period (45 to 50 sampling days) at each of 16 sites are presented for 60 elements. A lesser number of values is given for sulfate, nitrate, fluoride, acidity, 10 polynuclear aromatic hydrocarbon compounds, and the aliphatic hydrocarbon compounds as a group. Methods used included instrumental neutron activation, emission spectroscopy, gas chromatography, combustion techniques, and colorimetry. Uncertainties in the concentrations associated with the sampling procedures, the analysis methods, the use of several analytical facilities, and samples with concentrations below the detection limits are evaluated in detail. The data is discussed in relation to other studies and source origins. The trace constituent concentrations as a function of wind direction are used to suggest a practical method for air pollution source identification.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TN-D-8110 , E-8173
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Elemental composition of suspended particulates as functions of space and time in Cleveland, Ohio (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: An approach to the analysis of a very large elemental concentration data set. The particular data considered was generated by instrumental neutron activation and emission spectroscopy analyses of over 750 24-hour ambient air particulate samples collected at 16 sites in Cleveland, Ohio, during the 15 months from August 1971 thru October 1972. Examples are presented that show the use of multiple approaches to interpreting the data, including pairwise correlation statistics, selective data plotting and cluster analysis.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-X-71688 , E-8288 , Ann. Meeting of the Air Pollution Control Assoc.,; Jun 15, 1975 - Jun 20, 1975; Boston, MA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Pattern recognition methods and air pollution source identification (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Directional air samplers, used for resolving suspended particulate matter on the basis of time and wind direction were used to assess the feasibility of characterizing and identifying emission source types in urban multisource environments. Filters were evaluated for 16 elements and X-ray fluorescence methods yielded elemental concentrations for direction, day, and the interaction of direction and day. Large numbers of samples are necessary to compensate for large day-to-day variations caused by wind perturbations and/or source changes.
    Keywords: ENVIRONMENT POLLUTION
    Type: In: Joint Conference on Sensing of Environmental Pollutants; Nov 06, 1977 - Nov 11, 1977; New Orleans, LA
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Elemental composition and size distribution of particulates in Cleveland, Ohio (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Measurements were made of the elemental particle size distribution at five contrasting urban environments with different source-type distributions in Cleveland, Ohio. Air quality conditions ranged from normal to air pollution alert levels. A parallel network of high-volume cascade impactors (5-state) were used for simultaneous sampling on glass fiber surfaces for mass determinations and on Whatman-41 surfaces for elemental analysis by neutron activation for 25 elements. The elemental data are assessed in terms of distribution functions and interrelationships and are compared between locations as a function of resultant wind direction in an attempt to relate the findings to sources.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-X-71839 , Intern. Conf. on Heavy Metals in the Environ.; Oct 27, 1975 - Oct 31, 1975; Toronto, Ont.; Canada
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Elemental composition and size distribution of particulates in Cleveland, Ohio (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Measurements have been made of the elemental particle size distribution at five contrasting urban environments with different source-type distributions in Cleveland, Ohio. Air quality conditions ranged from normal to air pollution alert levels. A parallel network of high-volume cascade impactors (5-stage) were used for simultaneous sampling on glass fiber surfaces for mass determinations and on Whatman-41 surfaces for elemental analysis by neutron activation for 25 elements. The elemental data are assessed in terms of distribution functions and interrelationships and are compared between locations as a function of resultant wind direction in an attempt to relate the findings to sources.
    Keywords: ENVIRONMENT POLLUTION
    Type: International Conference on Heavy Metals in the Environment; Oct 27, 1975 - Oct 31, 1975; Toronto; Canada
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Elemental composition of suspended particulates as functions of space and time in Cleveland, Ohio (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: ENVIRONMENT POLLUTION
    Type: Air Pollution Control Association, Annual Meeting; Jun 15, 1975 - Jun 20, 1975; Boston, MA
    Format: text
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    NASA TECHNICAL REPORTS
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