Determination of brominated diphenyl ethers in atmospheric particulate matter using selective pressu

• 作者: Qian Zhang Yongxiao Wang Guilin Han Tao Liang
• 来源期刊: 地球化学学报(英文）
• 关键词: Brominated diphenyl ethers Atmospheric particulate matters Selective pressurised liquid extraction Gas chromatography-mass spectrometry
• 年，卷（期）: 2017,（3）
• 页码范围: 531-534
• 页数: 3页
• 语种: 英文
• DOI: 10.1007/s11631-017-0226-7

摘要

This study describes the development and validation of a sensitive and reliable method for determination of polybrominated diphenyl ethers (PBDEs) in atmospheric particulate matter using selective pressurized liquid extraction (SPLE) and gas chromatography–mass spectrometry with a negative chemical ionization (GC-NCI-MS). Extraction and clean-up were performed using PLE with 2 g florisil and 3 g silica placed in the extraction cells. Under optimal conditions, 14 PBDEs were extracted at 70℃ using hexane/dichloromethane (50:50, v/v) as solvent. Validation of SPLE returned excellent recoveries for most analytes, with relative standard deviations mostly below 20%. Method detection limits ranged from 0.13 to 15.38 ng·mL-1 for the GC-MS analyses. The method was successfully applied to atmospheric particulate matter of Beijing, where analytes were detected in the range of 182.79 to 468.99 pg·m-3.