[Study on determination of polycholorinated biphenyls in fish by isotopedilution GC-LRMS].
OBJECTIVE
To develop a method for determination of 20 indicator polycholorinated biphenyls in fish by GC-LRMS.


METHODS
Fish sample was added 13C lablled internal standard and cleaned-up by a multilayer silica column and a alumina column. Sample was analyzed by HRGC-LRMS using SIM mode.


RESULTS
Detection limits of 20 indicator polycholorinated biphenyls were 0.009 - 0.044 ng/g. Average recovery were 79.7% - 112.6%, RSD were 1% - 8% (n = 6).


CONCLUSIONS
Results showed that the method was suitable for determination of indicator PCB in fish sample.
Li
Jing-Guang
JG
Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing, China.
Wu
Yong-Ning
YN
D000818:Animals; D005399:Fishes / Q000378:metabolism*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D011865:Radioisotope Dilution Technique
D011078:Polychlorinated Biphenyls