caa a22 4500 445802774 CHVBK 20180317145146.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10337-010-1843-z doi (NATIONALLICENCE)springer-10.1007/s10337-010-1843-z Influence of Gas Chromatographic Parameters on Determination of Decabromodiphenyl Ether [Elektronische Daten] [Kebede Kefeni, Jonathan Okonkwo, Ben Botha] In this paper, we present a study on the influence of chromatographic parameters on determination of decabromodiphenyl ether in an attempt to arrive at optimum conditions that enhance its detection in environmental samples. Gas chromatography-electron capture detector (GC-ECD) equipped with digital pressure and gas flow control, ZB-5 capillary column of 15 and 30m length (0.25mm id, 0.25μm d f) are used. 1μL of 20ngμL−1 commercial decabromodiphenyl ether mixture dissolved in toluene is injected into the column in splitless mode and each parameter varied. Injection temperature of 290°C, initial and final oven temperatures of 90°C and 300-310°C, respectively, 1.0min splitless time and 2.5mLmin−1 flow rate found to be optimum on 15m column. Under optimum condition, entrance of BDE209 into the column is improved; retention time reduced by a factor of three and high repeatability with almost no degradation observed. Finally, the developed method is validated using standard reference material and applied to indoor dust samples. The average concentrations of decabromodiphenyl ether found from dust analysis in ngg−1 are 118±6.6, 103±11 and 26±1.6 in hotel, office and computer room, respectively. Springer-Verlag, 2011 Gas chromatography nationallicence Chromatographic parameters nationallicence BDE209 nationallicence Indoor dust nationallicence Kefeni Kebede Environmental Chemistry Research Group, Department of Environmental, Water and Earth Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa aut Okonkwo Jonathan Environmental Chemistry Research Group, Department of Environmental, Water and Earth Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa aut Botha Ben Environmental Chemistry Research Group, Department of Environmental, Water and Earth Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa aut Chromatographia Springer-Verlag 73/9-10(2011-05-01), 965-973 0009-5893 73:9-10<965 2011 73 10337 https://doi.org/10.1007/s10337-010-1843-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-010-1843-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kefeni Kebede Environmental Chemistry Research Group, Department of Environmental, Water and Earth Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa aut NATIONALLICENCE 700 1- Okonkwo Jonathan Environmental Chemistry Research Group, Department of Environmental, Water and Earth Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa aut NATIONALLICENCE 700 1- Botha Ben Environmental Chemistry Research Group, Department of Environmental, Water and Earth Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, South Africa aut NATIONALLICENCE 773 0- Chromatographia Springer-Verlag 73/9-10(2011-05-01), 965-973 0009-5893 73:9-10<965 2011 73 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer