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      Sorption of sulfamethoxazole, sulfachloropyridazine and sulfamethazine onto six New Zealand dairy farm soils

      Srinivasan, Prakash; Sarmah, Ajit K.; Manley-Harris, Merilyn; Wilkins, Alistair L.
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      Srinivasan, P., Sarmah, A.K., Manley-Harris, M. & Wilkins, A.L. (2010). Sorption of sulfamethoxazole, sulfachloropyridazine and sulfamethazine onto six New Zealand dairy farm soils. In Proceedings of 19th World Congress of Soil Science, Soil Solutions for a Changing World, 1-6 August 2010, Brisbane, Australia.
      Permanent Research Commons link: https://hdl.handle.net/10289/4684
      Abstract
      We have investigated the sorption potential of three sulfonamides (SAs) in six New Zealand dairy farming soils using a modified batch equilibrium method employing 0.005 M CaCl₂ as background solution. Both liquid and solid phases were extracted to analyse for the antibiotic concentrations in order to avoid underestimation that may arise a result of photolysis or biotic degradation. The experimental data were later used to construct Freundlich isotherms to determine the effective distribution coefficients. Low log Koc value for all SAs suggests considerable leaching potential for SAs under conditions that are conducive for leaching. The sorption affinity for all soils followed the trend SCP>SMZ>SMO.
      Date
      2010
      Type
      Journal Article
      Rights
      This article has been published in proceedings of 19th World Congress of Soil Science, Soil Solutions for a Changing World, 1-6 August 2010, Brisbane, Australia.

      © 2010 19th World Congress of Soil Science, Soil Solutions for a Changing World. Used with permission.
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