Characterization of certified reference material for quantification of polychlorinated biphenyls and organochlorine pesticides in fish.
Fish certified reference material (CRM), NMIJ CRM 7404-a, for the analysis of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) was developed by the National Metrology Institute of Japan, part of the National Institute of Advanced Industrial Science and Technology. Fish samples (Japanese seabass) used for the preparation of the CRM were collected from Tokyo Bay, and the edible part was freeze-dried, pulverized, sieved, homogenized, and sterilized by gamma-irradiation. This sample is in the form of a powder comprising approximately 10 g stored in a brown glass bottle. The certification was carried out using multiple analytical methods such as pressurized liquid extraction, Soxhlet extraction, saponification, and homogenization to ensure the reliability of analytical results; the certified values of target PCBs (PCB 28, PCB 70, PCB 105, PCB 153, and PCB 170) and OCPs (trans-nonachlor, dieldrin, p,p'-DDE, p,p'-DDT, and p,p'-DDD) were 1.05-14.0 microg kg(-1) and 1.57-18.0 microg kg(-1) for PCBs and OCPs, respectively. This is the first fish powder CRM in which PCBs and OCPs were determined by isotope dilution mass spectrometry.
Otake
Takamitsu
T
National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Umezono, Tsukuba, Ibaraki 305-8563, Japan. t-ootake@aist.go.jp
Aoyagi
Yoshie
Y
Yarita
Takashi
T
Numata
Masahiko
M
D000818:Animals; D005399:Fishes; D006843:Hydrocarbons, Chlorinated / Q000032:analysis / Q000592:standards*; D007564:Japan; D008722:Methods; D010575:Pesticides / Q000032:analysis / Q000592:standards*; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000592:standards*; D012015:Reference Standards
D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D011078:Polychlorinated Biphenyls