| dc.description.abstract | To date, trace levels of polybrominated diphenyl ethers (PBDEs) in environmental samples have been primarily measured using the gas chromatography/high resolution mass spectrometer (GC/HRMS) system. While GC/HRMS systems have many advantages such as excellent precision and detection limits, they also have several major bottlenecks for technology promotion including expensive acquisition, costly operation and maintenance, as well as bulky volume, resulting in only few laboratories in Taiwan that have the capacity to perform PBDEs analysis with GC/HRMS systems. Nonetheless, due to its substantial sensitivity improvement, the gas chromatography/tandem mass spectrometry (GC-MS/MS) system has draw a great deal of attention lately and is considered potentially to be used as a confirmatory method for PBDEs in the future. In fact, the GC-MS/MS system has been included in the regulations of the European Union on analysis for the official control of dioxin levels in 2014. The major reasons for it are, in contrast to these restrictions of GC/HRMS systems, that they are cheaper to acquire and operate, easier to maintain, and have a relatively compact size. In this study, we aimed to develope an analytic method for PBDEs by the use of Thermo Scientific™ TSQ™ 8000 Evo system and its establishment specification is referencing European Commission Regulation (EU) No 589/2014 and NIEA M802.00B, which is announced by Environmental Analysis Laboratory, Taiwan. The total 27 congeners of PBDEs established convering one to ten bromine moieties that were tested by the following settings: DB-5HT column (Length: 15m, I.D.: 0.25mm and Film: 0.1μm), 24 minutes as analysis period, and the calibration curve was prepared using five groups of standard solution. The results show that most of their Relative Response Factor of the relative standard deviation were less than 20%, except BDE-156 and BDE-196 that were 21.1% and 24.7%, respectively. Moreover, these results were obtained in good linearity (R2> 0.998), excellent detection limits, precision and accuracy. Our results suggest that the GC-MS/MS system has broad application prospects for the detection of trace PBDEs among diverse environmental matrices due to that performance achieves merely 20% negative systemic deviation in comparison with GC/HRMS systems (at both ppt and ppq levels). | en_US |