title: Preparation and certification of hijiki reference material, NMIJ CRM 7405-a, from the edible marine algae hijiki (Hizikia fusiforme).
abstract: A certified reference material, NMIJ CRM 7405-a, for the determination of trace elements and As(V) in algae was developed from the edible marine hijiki (Hizikia fusiforme) and certified by the National Metrology Institute of Japan (NMIJ), the National Institute of Advanced Industrial Science and Technology (AIST). Hijiki was collected from the Pacific coast in the Kanto area of Japan, and was washed, dried, powdered, and homogenized. The hijiki powder was placed in 400 bottles (ca. 20 g each). The concentrations of 18 trace elements and As(V) were determined by two to four independent analytical techniques, including (ID)ICP-(HR)MS, ICP-OES, GFAAS, and HPLC-ICP-MS using calibration solutions prepared from the elemental standard solution of Japan calibration service system (JCSS) and the NMIJ CRM As(V) solution, and whose concentrations are certified and SI traceable. The uncertainties of all the measurements and preparation procedures were evaluated. The values of 18 trace elements and As(V) in the CRM were certified with uncertainty (k = 2).
authors.affiliation: Environmental Standard Section, National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 3, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Narukawa
authors.forename: Kazumi
authors.initials: K
authors.lastname: Inagaki
authors.forename: Yanbei
authors.initials: Y
authors.lastname: Zhu
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Kuroiwa
authors.forename: Izumi
authors.initials: I
authors.lastname: Narushima
authors.forename: Koichi
authors.initials: K
authors.lastname: Chiba
authors.forename: Akiharu
authors.initials: A
authors.lastname: Hioki
mesh_terms: D001152:Arsenicals / Q000032:analysis* / Q000302:isolation & purification; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods; D000459:Phaeophyceae / Q000737:chemistry*; D012015:Reference Standards; D014131:Trace Elements / Q000032:analysis* / Q000302:isolation & purification
chemical_list: D001152:Arsenicals; D014131:Trace Elements