title: Multivessel system for cold-vapor mercury generation. Determination of mercury in hair and fish.
abstract: A multivessel system for the determination of mercury (Hg) by cold-vapor atomic absorption spectrometry (CV-AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) was developed. The performance of the proposed device was tested by determining total Hg in quality-control samples of hair and fishes following acid digestion. Application of the apparatus to the determination of Hg by CV-AAS following alkaline digestion was studied as well. The detection limit obtained for CV-AAS was 0.11 ng/mL and for ICP-AES 1.39 ng/mL. The results show that the system is appropriate to be used in techniques involving cold-vapor generation of Hg.
authors.affiliation: Instituto de Geociências, Universidade de Brasília, Brazil.
authors.forename: G R
authors.initials: GR
authors.lastname: Boaventura
authors.forename: A C
authors.initials: AC
authors.lastname: Barbosa
authors.forename: G A
authors.initials: GA
authors.lastname: East
mesh_terms: D000818:Animals; D005399:Fishes / Q000378:metabolism*; D006197:Hair / Q000737:chemistry*; D006801:Humans; D008628:Mercury / Q000032:analysis*; D011786:Quality Control; D015203:Reproducibility of Results; D013052:Spectrometry, X-Ray Emission / Q000379:methods; D013054:Spectrophotometry, Atomic / Q000295:instrumentation / Q000379:methods; D013464:Sulfuric Acids
chemical_list: D013464:Sulfuric Acids; D008628:Mercury; C033158:sulfuric acid