摘要
建立了大流量空气采样高分辨气相色谱/高分辨质谱(HRGC/HRMS)同时分析测定大气样品中多氯联苯(PCBs)和多溴联苯醚(PBDEs)的分析方法。结果表明在采样过程中污染物没有发生穿透。通过添加13C同位素标准物质进行评价,PCBs和PBDEs的加标回收率分别为60.7%～121.4%和69.9%～140.4%,均符合美国环保署相关方法的要求。PCBs和PBDEs的方法检出限分别低于0.019pg/m3和0.189pg/m3;色谱分离效果良好,可以满足大气样品中PCBs和PBDEs的监测需要。
A method for the determination of polychlorinated biphenyls （PCBs） and polybrominated diphenyl ethers （PBDEs） in ambient air using high volume sampling and high resolution gas chromatography coupled with high resolution mass spectrometry （HRGC/HRMS） was developed. The results indicated that no breakthrough happened during the sampling procedure. The recoveries of 13C labeled compound standards of PCBs and PBDEs were in the ranges of 60.7%-121.4% and 69.9%-140.4%,respectively,which were qualified by the corresponding EPA methods. The limits of detection （LODs） of PCBs and PBDEs in real samples were lower than 0.019 pg/m^3 and 0.189 pg/m^3,respectively. The chromatograms of PCBs and PBDEs show good performance in the separation. It is demonstrated that the method is suitable for the determination of PCBs and PBDEs in ambient air.
出处
《色谱》
CAS
CSCD
北大核心
2010年第5期449-455,共7页
Chinese Journal of Chromatography
基金
环境保护部"大气污染物对土壤质量的影响研究"项目和国家科技支撑计划课题项目(No.2007BAC27B01)
关键词
高分辨气相色谱/高分辨质谱
多氯联苯
多溴联苯醚
大气
high resolution gas chromatography/high resolution mass spectrometry （HRGC/HRMS）
polychlorinated biphenyls （PCBs）
polybrominated diphenyl ethers （PBDEs）
ambient air
