title: Determination of lead in preserved egg by flame atomic absorption spectrometry after chemically modified preconcentration.
abstract: A sensitive method for the determination of lead in preserved egg by flame absorption spectrometry using ammonium pyrrolidine dithiocarbamate-polystyrene chemically modified platinum wire matrix is presented. The modified platinum wire matrix, after preconcentrating the lead, is placed in a flame burner for direct atomization and measurement. The concentration range is linear between 5 and 500 ng/ml lead in solution and the detection limit is 0.65 ng/ml. This new technique is sensitive and convenient.
authors.affiliation: Department of Chemistry, Central China Normal University, Wuhan, People's Republic of China.
authors.forename: G
authors.initials: G
authors.lastname: Lu
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Wan
authors.forename: S
authors.initials: S
authors.lastname: Fon
authors.forename: H Y
authors.initials: HY
authors.lastname: Xu