Slurry sampling techniques for the determination of lead in Bangladeshi fish samples by electrothermal atomic absorption spectrometry with a metal tube atomizer.
Ultrasonic slurry sampling electrothermal atomic absorption spectrometry with a metal tube atomizer has been applied to the determination of lead in Bangladeshi fish samples. The slurry sampling conditions, such as slurry stabilizing agent, slurry concentration, pyrolysis temperature for the slurried fish samples, particle size and ultrasonic agitation time, were optimized for electrothermal atomic absorption spectrometry with the Mo tube atomizer. Thiourea was used as the chemical modifier for the interference of matrix elements. The detection limit was 53 fg (3S/N). The determined amount of lead in Bangladeshi fish samples was consistent with those measured in the dissolved acid-digested samples. The advantages of the proposed methods are easy calibration, simplicity, low cost and rapid analysis.
Department of Chemistry for Materials, Faculty of Engineering, Mie University, Mie 514-8507, Japan. marahman76@yahoo.com
Mohammad Arifur
MA
Rahman
Satoshi
S
Kaneco
Tohru
T
Suzuki
Hideyuki
H
Katsumata
Kiyohisa
K
Ohta
D000818:Animals; D001459:Bangladesh; D005399:Fishes; D007202:Indicators and Reagents; D007854:Lead / Q000032:analysis*; D008670:Metals / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013054:Spectrophotometry, Atomic / Q000379:methods*
D007202:Indicators and Reagents; D008670:Metals; D007854:Lead