title: [Determination of trace barium in biological samples by Zeeman graphite AAS with coated graphite tube].
abstract: Using a tungstate-coated graphite tube, trace barium in biological samples was determined by Zeeman graphite AAS. The sensitivity of Ba can be significantly improved. The precision and the lifetime of graphite tube have been improved by adding matrix modifier. The method is simple. The recovery and precision are satisfactory.
authors.affiliation: Oncology Laboratory, First Affiliated Hospital, Anhui Medical University, 230022 Hefei.
authors.forename: H
authors.initials: H
authors.lastname: Pu
authors.forename: X
authors.initials: X
authors.lastname: Sun
authors.forename: H
authors.initials: H
authors.lastname: Dou
mesh_terms: D001464:Barium / Q000097:blood* / Q000652:urine*; D006108:Graphite; D006801:Humans; D013054:Spectrophotometry, Atomic / Q000295:instrumentation / Q000379:methods*
chemical_list: D001464:Barium; D006108:Graphite