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  • lead  (4)
  • bromine  (3)
  • copper  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Geochemical mapping in Jamaica (1996)
    Springer
    Environmental geochemistry and health 18 (1996), S. 89-97 
    Details
    ISSN: 1573-2983
    Schlagwort(e): Aluminium ; bauxite ; bromine ; gamma intensities ; geochemical mapping
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Medizin
    Notizen: Abstract A high-precision regional geochemical data base of Jamaica is being developed as a basis for a wide variety of economic and environmental applications. These include pollution studies, resource identification and management, agriculture, land use, and the relationship between geochemistry and the health of crops, animals, and man. The acquisition of analytical data is mainly by instrumental neutron activation analysis using a SLOWPOKE reactor and by energy dispersive X-ray fluorescence. Concentration ranges and means in soil are presented for 31 elements and maps illustrating the distributions of Al, Br, Co, and the γ-ray intensities are presented as examples. Compared with world averages the levels of many heavy metals in Jamaican soils are found to be relatively high and in the main strongly correlated with bauxite occurrences. The high content of bromine in the soils appears to reflect the impact of sea-spray.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01771284
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  • 2
    Digitale Medien
    Digitale Medien
    Heavy metals in Jamaican surface soils (1996)
    Springer
    Environmental geochemistry and health 18 (1996), S. 113-121 
    Details
    ISSN: 1573-2983
    Schlagwort(e): Heavy metals ; arsenic ; cadmium ; copper ; lead ; soils ; neutron activation analysis ; X-ray fluorescence atomic absorption spectrophotometry ; bauxite
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Medizin
    Notizen: Abstract A regional survey of Jamaican surface soils has been conducted in which more than 200 samples were collected at a sample density of 1 per 64 km2 across the island and analysed for total concentrations of 31 elements by instrumental neutron activation analysis (INAA), energy dispersive X-ray fluorescence (EDXRF) analysis and atomic absorption spectrophotometry (AAS). The aim of the survey was to begin the construction of a high-precision geochemical database to provide information on elemental levels in soils for application to environmental studies, agriculture, and human and animal health. Results on the regional scale are presented for As, Cd, Cu, Hg and Pb. Although Jamaican surface soils are enriched in several heavy metals compared with world soil means and crustal abundances, lead is of particular importance at this stage because of its occurrence in residential areas. Except for Cu, the distribution maps of these elements are highly correlated with bauxite which in Jamaica is associated with white limestone geology and residualterra rossa soils.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01771287
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  • 3
    Digitale Medien
    Digitale Medien
    Suspended particulates in the Jamaican atmosphere (1997)
    Springer
    Environmental geochemistry and health 19 (1997), S. 0-0 
    Details
    ISSN: 1573-2983
    Schlagwort(e): Atmospheric particulates ; bromine ; Jamaica ; lead
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Medizin
    Notizen: Abstract The results of a survey of air particulates at 23 sites across Jamaica for total suspended particulates (TSP), Al, Br, Cl, Na, Pb, and V, by instrumental neutron activation analysis (INAA) and X-ray fluorescence analysis (XRF) are reported. The geometric mean of TSP values, 35 g m-3, is well within the World Health Organisation's standard of 60 g m-3 for TSP, but in areas of high vehicular traffic density the TSP values exceeded this limit. The correlation coefficient between Br and Pb concentrations in the particulates was 0.92 and the Br/Pb ratio of 0.38 compares well with a ratio of 0.39 found in commercial petrol indicating that the exhaust from vehicular traffic is the major source of Pb in atmospheric particulate matter in Jamaica.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1018481901288
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  • 4
    Digitale Medien
    Digitale Medien
    Spatial pattern of arsenic and lead distributions in Jamaican soils (1996)
    Springer
    Environmental geochemistry and health 18 (1996), S. 105-111 
    Details
    ISSN: 1573-2983
    Schlagwort(e): Arsenic ; lead ; soil ; GRASS GIS ; Jamaica
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Medizin
    Notizen: Abstract The spatial patterns of arsenic and lead distribution in Jamaican soils were studied using the Geographical Resources Analysis Support System (GRASS) and data from an island wide soil survey. Arsenic and lead were analysed by instrumental neutron activation analysis (INAA) and energy-dispersive X-ray fluorescence (EDXRF) techniques. The frequency distribution of each element is discussed in relation to major lithological groups. The As-Pb background levels for different areas in Jamaica were estimated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01771286
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  • 5
    Digitale Medien
    Digitale Medien
    The application of geographic information systems to geochemical studies in Jamaica (1996)
    Springer
    Environmental geochemistry and health 18 (1996), S. 99-104 
    Details
    ISSN: 1573-2983
    Schlagwort(e): Geographic information systems ; lead ; bromine ; GRASS
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Medizin
    Notizen: Abstract The Centre for Nuclear Sciences (CNS) uses a raster based geographic information system (GIS), integrated with a relational database to store information on point sampled data, including concentrations of over 50 elements and/or ions in a variety of sample materials. These data are filtered in the GIS to create surface layers and are assigned colours according to percentile ranges allowing visual inspection to be used to identify significant features and trends. The database currently contains raster map layers for soils and geologic features, point site data for water and air, and vector data for roads, rivers and streams. While data are still being added to the database interesting results are already being obtained and a few instances where the GIS was used to assist in the data interpretation are reported.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01771285
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