GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2000-2004
  • 1990-1994  (3)
  • 1992  (3)
Document type
Publisher
Years
  • 2000-2004
  • 1990-1994  (3)
Year
  • 1
    facet.materialart.
    Unknown
    High Resolution PCB Analysis of Kanechlor, Phenoclor and Sovol Mixtures Using Multidimensional Gas Chromatography (1992)
    Taylor & Francis
    In:  International Journal of Environmental Analytical Chemistry, 47 (3). pp. 201-215.
    Details
    Publication Date: 2018-03-21
    Description: Kanechlor-300, -400, -500 and -600, Phenoclor DP-3, -4, -5 and -6 and Sovol mixtures were analyzed for their chlorobiphenyl (CB) composition using high-resolution one-dimensional and multidimensional gas chromatography-electron capture detection (MDGC-ECD) techniques. The congener patterns of tested Kanechlor and Phenoclor mixtures resembled Aroclor 1016, 1242, 1254 and 1260. However, differences in the percentage contribution of minor constituents were noticed among these mixtures, which could be due to variations in the boiling-point fractionation of these commercial products. CB pattern of Sovol was different from the rest of the mixtures tested. It showed a composition in between ca. 30%, 40%, 50% and 60% overall chlorine levels. MDGC-ECD study showed the presence of hitherto unnoticed non-CB compounds coeluting with CBs in some commercial PCBs. The use of these mixtures as quantitation standards should be considered with caution. CB patterns of Sovol and a water extract of the Gulf of Finland matched closely, indicating a point source contamination to these waters.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1080/03067319208027029
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
    facet.materialart.
    Unknown
    Analyse von Polychlorierten Biphenylen und anderen organischen Spurenstoffen im Trinkwasser (1992)
    VCH
    In:  Zeitschrift für Wasser- und Abwasser-Forschung, 25 . pp. 115-121.
    Details
    Publication Date: 2019-02-27
    Description: Eine Analysenmethode, die für die organische Spurenstoff-Bestimmung im Meerwasser konzipiert ist, wurde auf die Analytik von Grund- und Trinkwasser übertragen. Es zeigte sich, daß mit den üblichen Meßmethoden keine ausreichenden Analysen möglich sind. Hauptprobleme sind zu geringe Probenvolumina (1-10 1), ungenügende Clean-up Methoden und unvollständige gaschromatographische Trennungen von koeluierenden Verbindungen. Die Konzentrationen an Chlorbiphenylen im untersuchten Trinkwasser lagen zwischen 0,1 und 50 pg/1 und somit weit unter den nach der Trinkwasserverordnung vom Dezember 1990 zulässigen Höchstmengen. Die Gehalte waren aber zum Teil höher als im Meerwasser der als sehr belastet angesehenen Nordsee und Ostsee. Unter diesen Gesichtspunkten, wie auch unter Berücksichtigung der unterschiedlichen Toxizitäten der Einzelkomponenten, erscheint der in der Trinkwasserverordnung vorgeschriebene Grenzwert viel zu hoch
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
    facet.materialart.
    Unknown
    CO2 partial pressure in Northeast Atlantic and adjacent shelf waters: Processes and seasonal variability (1992)
    Elsevier
    In:  Journal of Marine Systems, 3 (6). pp. 453-463.
    Details
    Publication Date: 2018-03-15
    Description: CO2 partial pressure in surface water was measured in the Northeast Atlantic and in the Hebride Shelf/North Sea area during a cruise with R.V. Poseidon in June 1991. A mean pCO2 of 303 μatm was found in the Atlantic between 50°N and 60°N. For an atmospheric CO2 content of 357.5 ppm(v) this corresponds to a partial pressure difference of −55 μatm. This supports the view that the subarctic Atlantic is a significant sink within the CO2 cycle between the ocean and the atmosphere. A comparison of our measurements with other data reveals that the pCO2 distribution changes significantly during May/June. This explained by seasonal warming, CO2 exchange with the atmosphere and biomass production. The contribution by each of these processes to the seasonal variations is calculated. It was found that during a plankton bloom the production of biomass is the dominating factor and may lower seawater pCO2 by almost 100 μatm. The shelf areas are charactrized by strong pCO2 gradients which are explained by water exchange with the Atlantic, temperature effects and biomass production.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/0924-7963(92)90016-2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...