title: [Preconcentration with crosslinked chitosan for determination of trace manganese in waters by flame atomic absorption spectrometry].
abstract: A novel method for the preconcentration with crosslinked chitosan (CCTS) and determination of trace manganese in waters by flame atomic absorption spectrometry has been presented. The absorption rate of manganese (VII) by CCTS was 98% at pH 3.00. The effect of preconcentration time, dosage of CCTS, temperature, sample volume and co-existing elements have been investigated. The mechanism of adsorption of CCTS for Mn(VII) was also discussed. The detection limit of the method was 1.86 microg x L(-1), and the relative standard deviation (RSD) was 2.0% (n = 10). The method has been applied to the determination of trace manganese in south lake and Changjiang water with satisfactory results.
authors.affiliation: Sciences College, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Ai-fang
authors.initials: AF
authors.lastname: Xue
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
authors.forename: Xing-cai
authors.initials: XC
authors.lastname: Luo
authors.forename: Yu-qiong
authors.initials: YQ
authors.lastname: Wu
authors.forename: Jin-song
authors.initials: JS
authors.lastname: Xie
mesh_terms: D048271:Chitosan / Q000737:chemistry*; D005618:Fresh Water / Q000032:analysis / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008345:Manganese / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D045483:Rivers / Q000737:chemistry; D013054:Spectrophotometry, Atomic / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D008345:Manganese; D048271:Chitosan