Villalba, MM, Litchfield, VJ, Smith, RB, Franklin, AM, Lawrence, NS and Davis, J (2008) Rapid assessment of the latent hazard posed by dissolved mercaptans within aqueous effluent. JOURNAL OF HAZARDOUS MATERIALS, 154 (1-3). pp. 444-450. [Journal article]
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The presence of mercaptans (RSH) can usually be detected by their inherent noxious odour but there is a need to quantify the concentration within effluent and hence allow an assessment of the latent hazard to be made prior to disposal. The versatility of using naphthoquinone as a rapid derivatising agent through which to trap such species has been evaluated. The quinone moiety provides a label that can be quantified using colorimetric, electrochemical and chromatographic means and offers a significant advantage over conventional thiol labelling agents. The analytical characteristics of each approach have been investigated and the selectivity, sensitivity and applicability of the reaction system critically assessed for a range of model compounds. The naphthoquinone system has a detection limit in the low micromolar range with little interference from other components common to discharge water with 96% recovery of mercaptopropionate. The reaction to sulfide (HS-) has also been assessed and a disparity in response between the detection methods observed and a possible reaction pathway outlined.
|Item Type:||Journal article|
|Keywords:||sulfur; sulfide; mercaptan; naphthoquinone; chromatography; analysis|
|Faculties and Schools:||Faculty of Computing & Engineering|
Faculty of Computing & Engineering > School of Engineering
|Research Institutes and Groups:||Engineering Research Institute|
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
|Deposited By:||Professor James Davis|
|Deposited On:||14 Feb 2010 15:17|
|Last Modified:||21 Feb 2014 11:25|
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