title: Certified reference material for quantification of polycyclic aromatic hydrocarbons in sediment from the National Metrology Institute of Japan.
abstract: The National Metrology Institute of Japan has issued a certified reference material (CRM) of freshwater lake sediment for polycyclic aromatic hydrocarbon (PAHs) analyses. The certification used three extraction techniques: pressurized liquid extraction (PLE) with toluene, PLE with dichloromethane/ethyl acetate (1:1 by volume), and alkaline extraction (1 M KOH in methanol) in combination with microwave-assisted extraction. Both gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/dopant-assisted atmospheric pressure photoionization/MS (LC/DA-APPI/MS) analyses were used. Certified values are provided for 18 PAHs at 1-25 microg kg(-1) except for perylene (2.08 x 10(3) microg kg(-1)), and information values are provided for two. Since the values of PAHs in the CRM are much lower than those in other CRMs and are comparable to those found at sites with little human influence, the CRM is suitable for PAH monitoring in sediment and soil samples.
authors.affiliation: National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1, Umezono, Tsukuba, Ibaraki, 305-8563, Japan. nobuyasu-itoh@aist.go.jp
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Itoh
authors.forename: Yoshie
authors.initials: Y
authors.lastname: Aoyagi
authors.forename: Akiko
authors.initials: A
authors.lastname: Takatsu
authors.forename: Takashi
authors.initials: T
authors.lastname: Yarita
mesh_terms: D000047:Academies and Institutes; D002623:Chemistry Techniques, Analytical / Q000592:standards*; D019015:Geologic Sediments / Q000737:chemistry*; D006077:Government Agencies; D007564:Japan; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012015:Reference Standards; D015203:Reproducibility of Results
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons