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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 299 (1979), S. 190-193 
    ISSN: 1618-2650
    Keywords: Best. von Bismut in Pflanzenmaterial, Tee, Laub ; Spektralphotometrie, Atomabsorption ; Graphitrohrküvette, Xylolextraktion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A sensitive method for the extraction and atomic absorption spectrometric measurement with electrothermal atomization has been developed for the determination of bismuth in tea and orchard leaves. Bismuth is extracted into m-xylene as diethyldithiocarbamate complex. 2.5–3.0 l/min of argon flow rate, 650–800° C of ashing temperature and 2,200–2,600° C of atomization temperature were the best experimental conditions. A detection limit of 0.02 ng was obtained with a precision of 2–7% and minimal interference effects.
    Notes: Zusammenfassung Ein empfindliches Verfahren zur Bi-Bestimmung in Tee und Blättern von Obstbäumen wurde ausgearbeitet. Bismut wird dabei als Diethyldithiocarbamat mit m-Xylol extrahiert. Optimale Arbeitsbedingungen sind: 2,5–3 l Argon/min, 650–800° C Veraschungstemperatur, 2200–2600° C Atomisierungstemperatur. Nachweisgrenze ist 0,02 ng und die Reproduzierbarkeit beträgt 2–7%. Störeffekte durch andere Elemente sind gering.
    Type of Medium: Electronic Resource
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