Duinker j c (8 Ergebnisse)

10 pp., 2 figs, gr. 8.

Concentrations of organochlorines were determined in Macoma balthica, Arenicola marina, Crangon crangon and sediments from the Dutch Wadden Sea. Maximum concentrations of (total) PCB, _-HCH and dieldrin were found in the western part; a pronounced maximum of HCB was found in the western part. Concentrations of PCB, p,p_-DDD and p,p_-DDE in sediment were correlated with the percentage of particles <50 _m. The relative contribution of each individual component to total PCB is very similar in Macoma and Arenicola and is independent of the concentration of total PCB. The relative concentrations of some components with structures facilitating metabolism, were lower in Crangon. The patterns of pentachloro- and higher chlorinated biphenyls were equal in Macoma, Arenicola and sediments. Since these components are not found in solution, they must be taken up from sediment and food. The results are in agreement with partitioning between body lipids and water as the dominant mechanism determining concentrations of persistent lipophilic contaminants in the animals. Partitioning with the ambient water may also determine the concentrations in the sediment. 20 pp., 7 figs., gr. 8. …

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Museum Boymans-van Beuningen, Rotterdam, 1982. 144 S. mit vielen Abbildungen, kartoniert, quer, (Rückenkanten teils leicht berieben)---- sonst gutes Exemplar / gutes Exemplar / Gemeentemuseum Arnheim / Karl Ernst Osthaus Museum, Hagen / zweisprachig: niederländisch und deutsch - 442 Gramm.

Zustand: Hervorragend. Zustand: Hervorragend | Seiten: 472 | Sprache: Englisch | Produktart: Bücher | It is presently well recognized that total concentrations of trace elements in any environmental compartment supply insufficient information to understand important phenomena. The distinction and separate analysis of specific chemical species are essential for understanding cycles in the aquatic environment, involving identification and quantification of sources, transport pathways, distributions and sinks, or, in the area of interactions between trace elements and organisms to understand uptake, distribution, excretion mechanisms and effects. In the past, various ways have been developed to determine the nature and extent of complexation of trace elements in natural systems. Approaches have been followed along very different lines. These have not always been fully appreciated by specialists working in even related fields of complexation research. The first International Symposium on the Complexation of Trace metals in Natural Waters was held at the Netherlands Institute for Sea Research (NIOZ, Texel, the Netherlands from 2-6 May 1983. The scientific programme was planned by the chief organizers Drs. C.J.M. Kramer and J.C. Duinker (NIOZ) together with Prof. Dr. H.W. Nurnberg (Kernforschungsanlage, Julich, Federal Republic of Germany) and Dr. M. Branica (Rudjer Boskovic Institute, Zagreb, Yugoslavia).…

Zustand: New. In English.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - It is presently well recognized that total concentrations of trace elements in any environmental compartment supply insufficient information to understand important phenomena. The distinction and separate analysis of specific chemical species are essential for understanding cycles in the aquatic environment, involving identification and quantification of sources, transport pathways, distributions and sinks, or, in the area of interactions between trace elements and organisms to understand uptake, distribution, excretion mechanisms and effects. In the past, various ways have been developed to determine the nature and extent of complexation of trace elements in natural systems. Approaches have been followed along very different lines. These have not always been fully appreciated by specialists working in even related fields of complexation research. The first International Symposium on the Complexation of Trace metals in Natural Waters was held at the Netherlands Institute for Sea Research (NIOZ, Texel, the Netherlands from 2-6 May 1983. The scientific programme was planned by the chief organizers Drs. C.J.M. Kramer and J.C. Duinker (NIOZ) together with Prof. Dr. H.W. Nurnberg (Kernforschungsanlage, Julich, Federal Republic of Germany) and Dr. M. Branica (Rudjer Boskovic Institute, Zagreb, Yugoslavia).…

Paperback. Zustand: Brand New. 472 pages. 9.30x6.20x1.30 inches. In Stock.