Journal ArticleDOI
Trace metal fronts in European shelf waters
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In this paper, the results obtained in summer 1981 on a transect between the open North Atlantic and the German Bight (Fig. 1) confirm that the hydrographical front is accompanied by dramatic increases in inorganic nutrients (phosphate, silicate) and dissolved trace elements such as Cd, Cu, Mn, and 226Ra (Figs 2 and 3).Abstract:
The Hebrides shelf edge area is characterized by strong horizontal salinity gradients (fronts) which mark the boundary between Scottish coastal and oceanic waters1,2. The results presented here, obtained in summer 1981 on a transect between the open North Atlantic and the German Bight (Fig. 1), confirm that the hydrographical front is accompanied by dramatic increases in inorganic nutrients (phosphate, silicate) and dissolved trace elements such as Cd, Cu, Mn, and 226Ra (Figs 2 and 3). These data (together with measurements from North Sea regions) suggest that the trace metals are mobilized from partly reduced (organic-rich) sediments and vertically mixed into the surface waters3. The regional variations evident from the transect are interpreted as being the result of the hydrography prevailing in waters around the British Isles4.read more
Citations
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Journal ArticleDOI
Northeast Pacific iron distributions in relation to phytoplankton productivity
John H. Martin,R. Michael Gordon +1 more
TL;DR: In this article, the authors measured the dissolved and particulate Fe concentrations, measured at three deep ocean stations on a 1600 km inshore-offshore VERTEX transect, compared with those found at four shallow California continental margin stations.
Journal ArticleDOI
Critical review of selected heavy metal and chlorinated hydrocarbon concentrations in the marine environment
TL;DR: A critical review of existing concentrations of the potential pollutants Hg, Cd, Pb, PCBs and DDT in marine waters, sediments and biota of the global ocean indicates that the highest concentrations are usually found in the most densely populated and industrialized regions which are often located near major river estuaries as discussed by the authors.
Journal Article
Scaling percentages and distributional patterns of benthic Foraminifera with flux rates of organic carbon
Alexander Volker Altenbach,Uwe Pflaumann,Ralf Schiebel,Andrea Thies,Sven Timm,Martin H. Trauth +5 more
TL;DR: In this paper, Wuellerstorfi et al. quantified flux rate dependent faunal patterns in surface sediments and compared the counts of benthic foraminifera at 382 surface sediment stations from the equatorial Guinea Basin to the Arctic Ocean.
Book ChapterDOI
Trace elements in the oceans
TL;DR: Trace elements are present in sea water at concentrations that range down to picomoles per litre (pmol 1-1) and even lower as discussed by the authors, and it is only recently that these have been fully overcome.
Book ChapterDOI
Sediments as a source for contaminants
TL;DR: This review article covers the processes affecting trace metals in deposited sediments and plays the major role in the potential flux of trace metals from the sediments, however this interface is not well studied at present.
References
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BookDOI
Methods of seawater analysis
TL;DR: The Automatic Determination of Dissolved Organic Carbon (DOC) by Wet Chemical Oxidation is described in this paper, along with the results of HPLC analysis of photosynthetic pigments.
Journal ArticleDOI
Oceanographic distributions of cadmium, zinc, nickel, and copper in the North Pacific
TL;DR: The vertical profiles of Cd, Zn, Ni, and Cu have been determined at three stations in the North Pacific and in the surface waters on a transect from Hawaii to Monterey, California as discussed by the authors.
Journal ArticleDOI
An improved metal extraction procedure for the determination of trace metals in sea water by atomic absorption spectrometry with electrothermal atomization
TL;DR: In this paper, a rapid carbamate extraction method with pyrrolidinedithiocarbamate (PDI) and diethyldithionic carbamate (DHC) was described for the simultaneous determination of Cd, Co, Cu, Fe, Ni, Pb and Zn in sea water by atomic absorption spectrometry with a graphite atomizer.
Journal ArticleDOI
Manganese in the North Pacific
TL;DR: A quantitative and precise method for determination of dissolved Mn at the nanomole(nmol)/kg level in seawater has been developed and used to study the distribution of Mn in the northeast Pacific as discussed by the authors.
Journal ArticleDOI
Early diagenesis in sediments from the eastern equatorial Pacific, II. Pore water metal results
TL;DR: The results from these four sites suggest that the pore water profiles of these metals are controlled by processes involving the major oxidants (O2, NO3−, Mn and Fe oxides) as discussed by the authors.