Sediment certified reference materials for the determination of polychlorinated biphenyls and organochlorine pesticides from the National Metrology Institute of Japan (NMIJ).
Two marine sediment certified reference materials, NMIJ CRM 7304-a and 7305-a, have been issued by the National Metrology Institute of Japan in the National Institute of Advanced Industrial Science and Technology (NMIJ/AIST) for the determination of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). The raw materials of the CRMs were collected from a bay near industrial activity in Japan. Characterization of these CRMs was conducted by NMIJ, where the sediments were analyzed using multiple analytical methods such as pressurized liquid extraction (PLE), microwave-assisted extraction (MAE), saponification, Soxhlet extraction, supercritical fluid extraction (SFE), and ultrasonic extraction; the target compounds were determined by one of the primary methods of measurements, isotope dilution-mass spectrometry (ID-MS). Certified values have been provided for 14 PCB congeners (PCB numbers 3, 15, 28, 31, 70, 101, 105, 138, 153, 170, 180, 194, 206, 209) and 4 OCPs (gamma-HCH, 4,4'-DDT, 4,4'-DDE, 4,4'-DDD) in both CRMs. NMIJ CRM 7304-a has concentrations of the contaminants that are a factor of 2-15 greater than in CRM 7305-a. Both CRMs have information values for PCB homolog concentrations determined by collaborative analysis using a Japanese official method for determination of PCBs. The total PCB concentrations in the CRMs are approximately 920 and 86 microg kg(-1) dry mass respectively.
Numata
Masahiko
M
Organic Standards Section 2, National Metrology Institute of Japan (NMIJ), AIST, 1-1-1, Umezono, Tsukuba, Ibaraki, 305-8563, Japan.
Yarita
Takashi
T
Aoyagi
Yoshie
Y
Tsuda
Yoko
Y
Yamazaki
Misako
M
Takatsu
Akiko
A
Ishikawa
Keiichiro
K
Chiba
Koichi
K
Okamaoto
Kensaku
K
D002568:Certification; D019015:Geologic Sediments / Q000737:chemistry*; D006077:Government Agencies / Q000592:standards*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis / Q000737:chemistry*; D007564:Japan; D010575:Pesticides / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D012015:Reference Standards; D014131:Trace Elements / Q000032:analysis*
D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014131:Trace Elements; D011078:Polychlorinated Biphenyls