The method detection limits for both 2,3,7,8-tetrachloro-dibenzo-furan (TCDF) and 2,3,7,8-tetrachloro- dibenzo-p-dioxin (TCDD) are 0.01 pg/g.

• 样品中 1 7个同系物异构体以OCDD的含量为最高 ；为 0 .；65 3pg g；OCDF为0 1 2 6pg g；其它均未检出。