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Occurrence and environmental levels of triclosan and triclocarban in selected wastewater treatment plants in Gauteng Province,South Africa

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Emerging Contaminants 2017年第3期3卷 107-114页

作者： raisibe f.lehutso Adegbenro P.Daso Jonathan O.Okonkwo Department of Environmental Water&Earth SciencesFaculty of ScienceTshwane University of Technology175 Nelson Mandela DrivePrivate Bag X680ArcadiaPretoria 0001South Africa

Triclosan and triclocarban are industrial chemicals that are frequently added into consumer and personal care *** on the levels on these compounds in water systems in the African continent is still very *** the present study,the occurrence,seasonal variation,and estimated removal of TCS and TCC in six different wastewater treatment plants in Gauteng Province,South Africa,were investigated over a period of two years,together with effluent receiving river *** instrumental analysis was carried out using Shimadzu LCMS/MS 8030,employing negative electrospray *** target compounds were ubiquitously detected with influent and raw sludge having elevated ***,TCS concentrations were higher than those of *** concentrations obtained for TCS were(influent,2.01e17.6 mg/L;effluent,0.990e13.0 mg/L;river,0.880e8.72 mg/L;raw sludge,3.65e15.0 mg/kg;treated sludge,2.08e7.81 mg/kg and biosolids,2.16e13.5 mg/kg);while TCC levels were obtained to be(influent,0.0860e2.84 mg/L;effluent,f TCS in wastewater was found to be influenced by temporal *** was not the case for occurrence of TCS and TCC in sludge *** to their environmental occurrence,the estimated treatment efficiencies also varied across the wastewater treatments plants,with the highest elimination rates of 63%and 97%for TCS and TCC,respectively.

关键词： Triclosan Triclocarban LC-MS/MS Seasonal concentrations Wastewater Sludge South Africa

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