title: Determination of manganese in herbal medicine samples by slurry-sampling electrothermal atomic absorption spectrometry with a metal tube atomizer.
abstract: An ultrasonic slurry-sampling electrothermal atomic absorption spectrometry with a molybdenum tube atomizer has been developed for the determination of manganese in herbal medicine samples. Ten percent glycerol solution was used as the slurry medium. The optimum pyrolysis temperature was 400 degrees C. The detection limit was 69 fg (3xS/N). Matrix element interference was checked and it was found that glycerol as a chemical modifier eliminated the interference. The amounts of manganese in herbal medicines determined by the proposed method are in good accordance with those measured in dissolved acid-digested samples. The method enables rapid calibration, and simple and rapid analysis of manganese in herbal medicine samples at low cost.
authors.affiliation: Department of Chemistry for Materials, Faculty of Engineering, Mie University, Tsu, Mie 514-8507, Japan. nurul34@hotmail.com
authors.forename: M Nurul
authors.initials: MN
authors.lastname: Amin
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kaneco
authors.forename: Tohru
authors.initials: T
authors.lastname: Suzuki
authors.forename: Yako
authors.initials: Y
authors.lastname: Taniguchi
authors.forename: Kiyohisa
authors.initials: K
authors.lastname: Ohta
mesh_terms: D029001:Herbal Medicine; D006358:Hot Temperature; D008345:Manganese / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013054:Spectrophotometry, Atomic / Q000379:methods*
chemical_list: D004364:Pharmaceutical Preparations; D008345:Manganese