title: Determination of bismuth in open ocean waters by inductively coupled plasma sector-field mass spectrometry after chelating resin column preconcentration.
abstract: A novel low-blank method is described for the analysis of bismuth in seawater based on preconcentration using an ethylenediaminetriacetic acid chelating resin column followed by determination with inductively coupled plasma sector-field mass spectrometry (ICPSFMS). A sample is siphoned into and drains through the column with the flow rate being kept constant by using a flotation device. Bi in 250 mL of acidified seawater is extracted onto the column in this process and eluted with 2 mL of 3 M HNO(3) followed by 3 mL of ultra-high purity water. The concentration of Bi in the eluate is measured by ICPMS. The benefits of the method compared to others are its simplicity, a smaller amount of seawater, and lower procedural blanks and detection limits at pg kg(-1) levels. Data on dissolved Bi in open ocean reference samples of SAFe and GEOTRACES programs are presented for the first time.
authors.affiliation: Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan. knorisue@inter3.kuicr.kyoto-u.ac.jp
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Norisuye
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Sohrin
mesh_terms: D001729:Bismuth / Q000032:analysis*; D002614:Chelating Agents / Q000737:chemistry*; D004492:Edetic Acid / Q000737:chemistry*; D013058:Mass Spectrometry / Q000379:methods*; D009792:Oceans and Seas; D012117:Resins, Synthetic / Q000737:chemistry*; D012623:Seawater / Q000737:chemistry*
chemical_list: D002614:Chelating Agents; D012117:Resins, Synthetic; D004492:Edetic Acid; D001729:Bismuth