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Showing 201-217 of 217 results

  1. Liquid Chromatography Element-specific Detection Systems for Analysis of Molecular Species

    Systems for the separation of inorganic compounds of environmental interest are described. They consist of a high-pressure liquid chromatograph...
    K. J. Irgolic, F. E. Brinckman in The Importance of Chemical “Speciation” in Environmental Processes
    Conference paper 1986

  2. The Dependence of Toxic Reactions on the Chemical Species of Elements

    A distinction is made between the toxicology of metal and metalloid elements which form stable oxyanions and those which do not. As examples of the...
    M. Piscator in The Importance of Chemical “Speciation” in Environmental Processes
    Conference paper 1986

  3. Importance and Determination of Chemical Species in Biological Systems

    Biological systems constantly synthesize, change, and degrade organic and inorganic chemical species. These processes and the interactions among...
    W. R. Wolf, K. J. Irgolic, ... M. Zeppezauer in The Importance of Chemical “Speciation” in Environmental Processes
    Conference paper 1986

  4. Importance of Chemical Species in Uptake, Loss, and Toxicity of Elements for Marine Organisms

    The influence of chemical species on the uptake and the toxicity of As, Cd, Cr, Cu, Fe, I, Hg, Ru, and Zn is reviewed in this paper. Experiments in...
    M. Bernhard, S. G. George in The Importance of Chemical “Speciation” in Environmental Processes
    Conference paper 1986

  5. Chemical Species in Seawater and Marine Particulates

    In recent years analytical techniques have become available which make it possible to identify individual chemical species in seawater and marine...
    M. O. Andreae in The Importance of Chemical “Speciation” in Environmental Processes
    Conference paper 1986

  6. Evidence for the presence of arsenobetaine as a major arsenic compound in the shrimpSergestes lucens

    The major arsenic compound in the shrimp Sergestes lucens was isolated and identified as arsenobetaine (CH 3 ) 3 A S + CH 2 COO − . Arsenobetaine accounted...

    K. Shiomi, A. Shinagawa, ... T. Kikuchi in Experientia
    Article 01 November 1984

  7. Alteichin: an unusual phytotoxin fromAlternaria eichorniae, a fungal pathogen of water hyacinth

    The phytopathogenic fungus Alternaria eichorniae attacks water hyacinth, an economically significant aquatic weed. The novel phytotoxin alteichin was...

    D. Robeson, G. Strobel, ... J. Clardy in Experientia
    Article 01 November 1984

  8. Isolation and partial characterization of a phytotoxic glycoprotein from culture filtrates ofRhynchosporium secalis

    Rhynchosporium secalis (Oud.) Davis produces a phytotoxic compound with a mol. wt of 275×10 3 which is able to induce chlorotic symptoms in both...

    C. Mazars, K. D. Hapner, G. A. Strobel in Experientia
    Article 01 November 1984

  9. Arsenic in marine organisms

    A review of the nature and accumulation of arsenic in marine organisms is presented. A study of the literature has revealed a lack of information...

    W. A. Maher in Biological Trace Element Research
    Article 01 April 1984

  10. Phytoplankton Solved the Arsenate-Phosphate Problem

    Phosphate is so effectively consumed by photosynthetic activity in surface waters of much of the ocean that its concentration diminishes to that of...
    A. A. Benson in Marine Phytoplankton and Productivity
    Chapter 1984

  11. Arsenic

    Since ancient times, arsenicals have been characterized by actions both benevolent and malevolent. The sulfides of arsenic—realgar (tetraarsenic...
    Forrest H. Nielsen, Eric O. Uthus in Biochemistry of the Essential Ultratrace Elements
    Chapter 1984

  12. The Relationships Between Metal Speciation in the Environment and Bioaccumulation in Aquatic Organisms

    Recent advances in methodology have resulted in a much better understanding of the speciation of metals in natural waters. However, despite the...
    W. J. Langston, G. W. Bryan in Complexation of trace metals in natural waters
    Chapter 1984

  13. Standard Setting and Metal Speciation: Arsenic

    Environmental quality standards are usually based upon concentrations of metals as such, not taking into account essential differences in...
    R. L. Zielhuis, A. A. E. Wibowo in Changing Metal Cycles and Human Health
    Conference paper 1984

  14. Dimethyloxarsylethanol from anaerobic decomposition of brown kelp (Ecklonia radiata): A likely precursor of arsenobetaine in marine fauna

    The novel arsenic compound, dimethyloxarsylethanol, has been isolated from anaerobically incubated Ecklonia radiata . It is proposed that this compound...

    J. S. Edmonds, K. A. Francesconi, J. A. Hansen in Experientia
    Article 01 June 1982

  15. Study of the metabolites ofPhyllosticta maydis. I. Isolation and partial identification

    Various metabolites of the fungus Phyllosticta maydis have been isolated, particularly mevalonolactone. The most interesting of these compounds, which...

    G. Aranda, A. Bervillé, ... B. Poiret in Experientia
    Article 01 June 1982

  16. Effect of diphosphonates on ATP and Pi content, Pi uptake and energy charge of cultured calvaria cells

    In previous studies we have shown that glycolysis is strongly inhibited in cultured calvaria cells treated with ethane-1-hydroxy-1, 1-diphosphonate...

    R. Felix, H. Fleisch in Experientia
    Article 01 June 1982

  17. Chemical characteristics of arsenic in a marine food chain

    The various chemical forms of 74 As accumulated from either water or food by the marine food chain [ Fucus spiralis (L.)→ Littorina littoralis (L.)→ Nuce...

    D. W. Klumpp, P. J. Peterson in Marine Biology
    Article 01 June 1981
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