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A Model System for the Investigation of Methods of Herbicide Speciation

  • Robert D. Guy
  • Deoraj R. Narine
Part of the Environmental Science Research book series (ESRH, volume 16)

Abstract

Organic chemicals in the aquatic environment may exist in a number of chemical forms; for example, the chemical may be in true solution, adsorbed onto inorganic colloids (Haque, 1975), associated with soluble and particulate humic substance (Haque, 1975), dissolved in lipid coatings on particulates (Hartung, 1975; Hance, 1969), and incorporated into the biotic material. The relative distribution of an organic chemical among the different forms will depend on the properties of the compounds (charge, polar functional groups, size etc.), the composition of the particulates, and the ultimate relationship between chemical speciation and bioavailability.

Keywords

Humic Substance Humic Acid Methylene Blue Cation Exchange Capacity Clay Suspension 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Bailey, G.W. and L.L. White, 1970. Adsorption, desorption and movement of pesticides in soil. Residue Reviews, 32, 29 (1970).Google Scholar
  2. Bergman, K. and CT. O’Konski, 1963. A spectroscopic study of methylene blue monomer, dimer, and complexes with montmoril-lonite. J. Phys. Chem., 67, 2169 (1963).CrossRefGoogle Scholar
  3. Bonneau, Roland and Josette Pereyre, 1975. Mechanism of photo-reduction of thiazine dyes by EDTA. Photochem. Photobiol., 21, 173 (1975).Google Scholar
  4. Braswell, E.H. 1972. Equilibrium sedimentation studies of the aggregation of methylene blue. J. Phys. Chem., 76, 4026 (1972).CrossRefGoogle Scholar
  5. Chapman, H.D., 1965. Methods of Soil Analysis, Chapter 57. Edited by C.A. Black, Amer. Soc. Agronomy.Google Scholar
  6. Florence, T.M. and G.E. Batley, 1977. Chemical forms of trace metals in natural waters with special reference to copper, lead, cadmium and zinc. Talanta, 24, 151 (1977).CrossRefGoogle Scholar
  7. Foye, W.O., 1977. Antimicrobial activities of mineral elements, in Microorganisms and Minerals, edited by E.D. Weinberg, Marcel Dekker, New York, 1977. page 387.Google Scholar
  8. Frackowiak, D. and E. Rabinowitch, 1966. Methylene blue-ferrous iron reaction in a two phase system. J. Phys. Chem., 70, 3012, (1966).CrossRefGoogle Scholar
  9. Green, R.E., 1974. Pesticide-Clay-Water Interactions, in Pesticides in Soil and Water., Soil Science Soc. America, Madison, Wisconsin. page 3.Google Scholar
  10. Hance, R.J., 1969. Adsorption of linuron, atrazine, and EPTC by model aliphatic adsorbents and soil organic preparations. Weed Res., 9, 103 (1969).CrossRefGoogle Scholar
  11. Hang, P. Thi, and G.W. Brindley, 1970. Methylene blue adsorption by clay minerals. Determination of surface areas and cation exchange capacities. Clay and Clay Minerals,.18, 203 (1970).CrossRefGoogle Scholar
  12. Haque, Rizwanthul, 1975. Role of adsorption in studying the dynamics of pesticides in a soil environment, in Environmental Dynamics of Pesticides, ed. by R. Haque and V.H. Freed, Plenum, New York, 1975. p.97.Google Scholar
  13. Harris, C.I., 1962. Adsorption and desorption of herbicides by soil. Ph.D. Thesis, Purdue University.Google Scholar
  14. Härtung, Rolf, 1975. Accumulation of chemicals in the hydrosphere, in Environmental Dynamics of Pesticides, ed. by R. Haque and V.H. Freed, Plenum, New York, 1975. p.185.Google Scholar
  15. Hutchinson, T.C. and P.M. Stokes, 1975. Heavy metal toxicity and algal bioassays, in Water Quality Parameters, ed. by S. Barabas. ASTM STP 573, Philadelphia, 1975. p.320.CrossRefGoogle Scholar
  16. Nielsen, E. Steeman and S. Wium-Anderson, 1970. Copper ions as a poison in sea and in fresh water. Marine Biol., 6, 93 (1970).CrossRefGoogle Scholar
  17. Schnitzer, M. and S.U. Khan, 1972. Humic Substances in the Environment, Marcel Dekker, New York, 1972.Google Scholar
  18. Standard Methods for the Examination of Water and Wastewater, 14 Edition, APHA-AWWA-WPCF, 1975. p.748.Google Scholar
  19. Terce, Martine and R. Calvet, 1978. Adsorption of several herbicides by montmorillonite, kaolinite and illite clays. Chemosphere, 4, 365 (1978).CrossRefGoogle Scholar
  20. Weber, J.B. 1972. Interactions of organic pesticides with particulate matter in aquatic and soil systems, in Fate of Organic Pesticides in the Aquatic Environment, Ed. by R.F. Gould. Amer. Chem. Soc, Washington, D.C., page 55.CrossRefGoogle Scholar
  21. Zugel, M., Th. Forster and H.E.A. Kramer, 1972. Sensitized photooxygenation according to type I mechanism (radical mechanism). Part III. Continuous Illumination. Photochem. Photobiol., 15, 33 (1972).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Robert D. Guy
    • 1
  • Deoraj R. Narine
    • 1
  1. 1.Trace Analysis Research Centre, Dept. of ChemistryDalhousie UniversityHalifaxCanada

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