Daso Adegbenro P, Rohwer Egmont R, Koot Dwayne J, Okonkwo Jonathan O
Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South Africa.
Department of Environmental, Water and Earth Sciences, Tshwane University of Technology, 175 Nelson Mandela Drive, Private Bag X680, Arcadia, Pretoria, South Africa.
Environ Monit Assess. 2017 Aug;189(8):418. doi: 10.1007/s10661-017-6131-z. Epub 2017 Jul 27.
The occurrence of selected brominated flame retardants, including nine polybrominated diphenyl ether (PBDE) congeners, hexabromocyclododecane (HBCDD) and tetrabromobisphenol A (TBBPA) in leachate samples from eight landfill sites in South Africa, were investigated. In addition, the possible influences of dissolved organic carbon on their levels were also evaluated. Filtered leachate samples were subjected to solid-phase extraction to isolate the various target compounds. PBDEs with six bromine substituents and above, as well as α-HBCDD, β-HBCDD and TBBPA, were generally found below the detection limit. However, the mean value of the total lower PBDE congeners ranged between 0.04 and 0.48 μg L, and the concentrations of γ-HBCDD ranged from not detectable (ND) to 0.05 μg L. No significant correlation was observed between the target compounds and dissolved organic carbon, although weak to moderate correlations were mostly observed for the lower PBDEs.
对南非八个垃圾填埋场渗滤液样品中选定的溴化阻燃剂的出现情况进行了调查，这些溴化阻燃剂包括九种多溴二苯醚（PBDE）同系物、六溴环十二烷（HBCDD）和四溴双酚A（TBBPA）。此外，还评估了溶解有机碳对其含量的可能影响。对过滤后的渗滤液样品进行固相萃取，以分离出各种目标化合物。一般发现含六个及以上溴取代基的多溴二苯醚以及α-HBCDD、β-HBCDD和四溴双酚A低于检测限。然而，较低多溴二苯醚同系物总量的平均值在0.04至0.48μg/L之间，γ-HBCDD的浓度范围为未检出（ND）至0.05μg/L。目标化合物与溶解有机碳之间未观察到显著相关性，尽管较低多溴二苯醚大多观察到弱至中等程度的相关性。
