Concentrations of dioxin-like polychlorinated biphenyls (dl-PCBs) and non-dioxin-like PCBs (ndl-PCBs) in 26 serum samples of the residents from Hubei Province were analyzed via high-resolution gas chromatograph tandem high-resolution mass spectrometer (HRGC-HRMS) method. Total concentrations of twelve dl-PCBs (Σdl-PCBs) were in range of 366.30-4 945.77 pg/g fat, with the mean value (2 093.76 pg/g fat), and PCB 118 was the predominant congener. For six ndl-PCBs, total concentrations (Σndl-PCBs) were in range of 2 671.32-20 626.26 pg/g fat (mean 12 505.45 pg/g fat), and PCB 153 was the predominant congener. Mean concentration of Σdl-PCBs were significantly and positively associated with age (rs=0.574, P=0.002). The mean World Health Organization toxicity equivalent (WHO-TEQ) of dl-PCBs (ΣTEQdl-PCBs) were range from 0.07 to 8.69 pg/g fat.
采用同位素稀释-高分辨气相-高分辨质谱（HRGC-HRMS）法测定湖北省某地区26名居民血清中12种二噁英类PCBs（dl-PCBs）和6种非二噁英类PCBs（ndl-PCBs）的污染水平。总dl-PCBs（Σdl-PCBs）的浓度范围为366.30~4 945.77 pg/g 脂肪，平均值为2 093.76 pg/g 脂肪，PCB 118为dl-PCBs的主要异构体。总ndl-PCBs（Σndl-PCBs）的浓度范围为2 671.32~20 626.26 pg/g 脂肪，平均值为12 505.45 pg/g 脂肪，PCB 153为ndl-PCBs的特征异构体。血清中Σdl-PCBs的平均浓度水平与年龄呈显著正相关（rs=0.574，P=0.002）。按毒性当量（TEQ）计，总TEQ（ΣTEQdl-PCBs）含量范围为0.07~8.69 pg/g 脂肪。.