Determination of PCDD/Fs and dioxin-like PCBs in food and feed using gas chromatography-triple quadrupole mass spectrometry

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2017,（5）
• 页码范围: 670-677
• 页数: 8页
• 语种: 英文
• DOI: 10.1007/s11426-016-9017-9

摘要

A method was developed on a gas chromatograph coupled to a triple quadrupole mass spectrometer (GC-MS/MS) for trace level determination of polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) in food and feed.The results demonstrated good sensitivity and repeatability for PCDD/Fs and DL-PCBs at an extremely low level (10 pg mL-1 for 2,3,7,8-TCDD/F),as well as wide linear response of over 3 or 4 orders of magnitude in concentration ranges;0.5-200 ng mL-1 for PeCDD/F and 0.2-2000 ng mL 1 for DL-PCBs.The method detection limits for PCDD/Fs and DL-PCBs were in the range from 0.018-0.17 pg g-1 to 0.13-0.36 pg g-1,respectively.The performance of the GC-MS/MS for food and feed sample analysis showed high precision and accuracy compared to the high resolution gas chromatograph/high resolution mass spectrometer.The results indicated the feasibility of GC-MS/MS as a confirmatory method for the measurement of PCDD/Fs and DL-PCBs in food and feed as required by European Union legislation.