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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 286 (1977), S. 248-248 
    ISSN: 1618-2650
    Keywords: Best. von Kupfer in Gemüse ; Polarographie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 278 (1976), S. 287-288 
    ISSN: 1618-2650
    Keywords: Best. von Kupfer in Serum ; Polarographie ; Gleichstrom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 262 (1972), S. 100-101 
    ISSN: 1618-2650
    Keywords: Best. von Kupfer in Wasser ; Polarographie, Square-Wave
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A square-wave polarograph [3] has been used to determine trace amounts of copper in potable water and in Iowa River water. By using a combination of sodium chloride (1.0 M) and perchloric acid (0.07 M) as a supporting electrolyte under acidic conditions (pH〈1), 2 ppb copper could be determined in the samples without and with preconcentration. Copper in the samples was determined with reproducibility of ± 0.13 ppb and so this technique is more reliable than a more used determination of complex salts by atomic absorptionspectrophotometry.
    Notes: Zusammenfassung Ein früher [3] beschriebener Square-Wave-Polarograph wurde zur Spurenbestimmung von Kupfer in Trink- und Flußwasser (Iowa River) benutzt. Der verwendete Grundelektrolyt war 1,0 M an NaCl und 0,07 M an HClO4 (pH〈1). Noch 2 ppb Cu konnten mit und ohne Vorkonzentrierung bestimmt werden. Die Reproduzierbarkeit war ± 0,13 ppb. Das Verfahren ist zuverlässiger als die Bestimmung über Komplexsalze durch Atomabsorptionsspektrophotometrie.
    Type of Medium: Electronic Resource
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