title: Certification of mono-, di-, and tributyltin compounds in marine sediment certified reference material by species-specific isotope dilution mass spectrometric analysis using synthesized 118Sn-labeled butyltins.
abstract: A new marine sediment reference material (NMIJ CRM 7301-a) for butyltins analysis was prepared and certified by the National Metrological Institute of Japan, National Institute of Advanced Industrial Science and Technology (NMIJ/AIST). The original material of the sediment was collected at a bay near industrial activities in Japan. The sediment material was air-dried, sieved, homogenized, and packaged into 1,000 glass bottles (60 g each). Certification of NMIJ CRM 7301-a was carried out at NMIJ using two different types of species-specific isotope dilution mass spectrometry: isotope dilution-ethylation-gas chromatography/inductively coupled plasma mass spectrometry (GC/ICPMS) and isotope dilution-ethylation-gas chromatography/mass spectrometry (GC/MS). A mixture of (118)Sn-enriched monobutyltin, dibutyltin, and tributyltin was synthesized in our laboratory and was used as a spike for both techniques. Certified values are given for tributyltin (0.044+/-0.004 mg kg(-1) as Sn), dibutyltin (0.056+/-0.006 mg kg(-1) as Sn, and monobutyltin (0.058+/-0.013 mg kg(-1) as Sn), being at lower levels than currently available sediment CRMs for the analysis of organotins.
authors.affiliation: Environmental Standard Section, National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, Tsukuba Central 3, 305-8563, Ibaraki, Japan.
authors.forename: Kazumi
authors.initials: K
authors.lastname: Inagaki
authors.forename: Akiko
authors.initials: A
authors.lastname: Takatsu
authors.forename: Takuro
authors.initials: T
authors.lastname: Watanabe
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Kuroiwa
authors.forename: Yoshie
authors.initials: Y
authors.lastname: Aoyagi
authors.forename: Kensaku
authors.initials: K
authors.lastname: Okamoto
mesh_terms: D002568:Certification; D019015:Geologic Sediments / Q000737:chemistry*; D007554:Isotopes / Q000032:analysis; D013058:Mass Spectrometry / Q000379:methods; D009947:Organotin Compounds / Q000032:analysis*; D011865:Radioisotope Dilution Technique; D012015:Reference Standards
chemical_list: D007554:Isotopes; D009947:Organotin Compounds