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[Study on determination of polycholorinated biphenyls in fish by isotopedilution GC-LRMS]
1Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing, China.
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).
Conclusion:
Results showed that the method was suitable for determination of indicator PCB in fish sample.
