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  • 1970-1974  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 44 (1972), S. 2046-2049 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 12 (1974), S. 752-758 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Conclusions Crop extracts of the triazine herbicides, atrazine and simazine, were suitably cleaned up by low temperature precipitation for glc and nitrogen detection. The use of this technique as a multiresidue cleanup method for the glc screening of pesticides may be extended to include these and other similar triazine herbicides. The ec detector was found to be unsuitable for triazine analysis using the low temperature cleanup technique on the crops studied.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 254 (1971), S. 271-274 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A fluorimetric in situ method is described for the determination of Sevin and α-naphthol. The compounds are extracted, separated on silicagel-gel thin layers and sprayed with NaOH solution to render them fluorescent. Sevin is converted to α-naphthol by this treatment. The fluorescence of both spots is measured at 488 nm (excitation: 338 nm). Visual detection limit is 0.006 μg/spot, by instrumental measurement it is 0.001 μg/spot. Reproducibility and accuracy are comparable to gas chromatography and other methods.
    Notes: Zusammenfassung Die Substanzen werden extrahiert, auf Silicagel-Dünnschichten getrennt und mit Natronlauge besprüht, wodurch sie fluorescierend werden. Sevin wird dabei in α-Naphthol umgewandelt. Die Fluorescenz der beiden Flecke wird bei 488 nm gemessen (Anregung: 338 nm). Die Nachweisgrenze liegt visuell bei 0,006 μg je Fleck, bei instrumenteller Messung bei 0,001 μg. Reproduzierbarkeit und Genauigkeit des Verfahrens sind der Gas-Chromatographie und anderen Methoden vergleichbar.
    Type of Medium: Electronic Resource
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