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      Determination of EDTA in dairy wastewater and adjacent surface water

      Xie, Congmin Zoe; Healy, Terry R.; Robinson, Peter; Stewart, Kevin
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      Xie, C., Z., Healy, T. R., Robinson, P., & Stewart, K. (2010). Determination of EDTA in dairy wastewater and adjacent surface water. International Journal of Civil and Environmental Engineering, 2(1), 44-48.
      Permanent Research Commons link: https://hdl.handle.net/10289/8111
      Abstract
      An HPLC-UV analytical method was developed to determine ethylenediaminetetraacetic acid (EDTA) in dairy wastewater and surface water. The optimizing separation was achieved by reversed–phase ion-pair liquid chromatography on a C18 column using methanol as mobile phase solvent, tetrabutylammonium bromide as the ion-pair reagent in pH 3.3 formate buffer solution at a flow rate of 0.9 mL min⁻¹ with a UV detector at 265 nm. No interference of Ca, Mg or NO₃⁻ was detected. Method performance was evaluated in terms of linearity, repeatability and reproducibility. The method detection limit was 5 µg L⁻¹. The contents of EDTA in dairy effluents were 72 ~ 261 µg L⁻¹ at a large dairy site. A change of EDTA concentration was observed downstream of the dairy effluent discharge, but this was well under the predicted no effect concentration for aquatic ecosystem
      Date
      2010
      Type
      Journal Article
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      This article has been published in the journal: International Journal of Civil and Environmental Engineering.
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      • Science and Engineering Papers [3077]
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