Determination of brominated flame retardants in electrical and electronic equipments with microwave-assisted extraction and gas chromatography-mass spectrometry.
Determination of brominated flame retardants in electrical and electronic equipments (EEE) was achieved through microwave-assisted extraction (MAE) and gas chromatography-mass spectrometry. Polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) including mono-brominated through deca-brominated congeners were qualified and quantified with good linearity (0.9963-0.9998) and repeatability (RSD, 1.1-8.1%). Multivariable orthogonal experimental design was used to optimize the MAE parameters. Extraction temperature and time were the most significant factors for extraction process. The extractants were cleaned up with SPE method after extraction. Recoveries of spiked blank samples ranged from 72.4% to 108.4% for most of the analytes. The method was applied to the determination of PBBs and PBDEs in several kinds of real EEE samples. It was found that no detectable level of PBBs was detected among them. Different contents of PBDEs were tested in the tested samples and the total contents ranged from 25.0 ng g(-1) to 194.0 ng g(-1). The proposed approach demonstrated an environmentally friendly and convenient alternative, which only consumed 10mL hexane to microwave extraction for 10min at 100 degrees C.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
Ying
Y
Li
Tianran
T
Wang
Yuki
Y
Hashi
Haifang
H
Li
Jin-Ming
JM
Lin
D055615:Electrical Equipment and Supplies; D004785:Environmental Pollutants / Q000032:analysis / Q000302:isolation & purification; D005411:Flame Retardants / Q000032:analysis / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000302:isolation & purification; D006586:Hexanes; D011075:Polybrominated Biphenyls / Q000032:analysis / Q000302:isolation & purification; D015203:Reproducibility of Results; D052616:Solid Phase Extraction; D013696:Temperature
D004785:Environmental Pollutants; D005411:Flame Retardants; D055768:Halogenated Diphenyl Ethers; D006586:Hexanes; D011075:Polybrominated Biphenyls