The total concentrations of PCDD/Fs (ΣPCDD/Fs) in DWTC and adjacent villages varied from2.325 to 2.829 pg Nm−3 with amean value of 2.556 pg Nm−3 and from1.638 to 2.714 pg Nm−3 with a mean value of 2.136 pg Nm−3, respectively. ΣPCDD/Fs in DWTC were slightly higher than that of adjacent villages.