This study was conducted on basis of the measured data of polychlorinated biphenyl content in ice water during the frozen period

at the Toudaoguai section of Yellow river in 2012-2013. The distribution characteristics of polychlorinated biphenyl content and its origins were analyzed at this specific section in the frozen period. Results showed that: the ΣPCBs concentration in water is 10.19~5300 ng·L

-1



and the average concentration is 31.87 ng·L

-1

; the ΣPCBs concentration in ice is 2.91~34.34 ng·L

-1



and the mean one is 15.11 ng·L

-1



the content of Low PCB is larger than the High PCB

which is in consistence with the practical situation that Low PCB was massively produced and used in our country. Compared to the corresponding period in 2011-2012

the content of Low PCB was increased by 65.7%， but

the High PCB one was lowered by 20.39%

the general content was enlarged by 28.96%. The PCBs content in Flow Ling period is the maximum one

and it becomes smaller and smaller in the frozen period

while depicts a slight inclination of increase in the Ice Melting period. The origins of PCBs in ice water during the frozen period are: electric insulating oil

paint additive and Bleaching industries.