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  • Electrothermal atomic absorption spectrometry  (1)
  • Fluorimetric detection  (1)
  • Springer  (2)
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  • Springer  (2)
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  • 1
    Digitale Medien
    Digitale Medien
    Identification of vitamin B12 analogues by liquid chromatography with electrothermal atomic absorption detection (1996)
    Springer
    Chromatographia 42 (1996), S. 566-570 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Column liquid chromatography ; Electrothermal atomic absorption spectrometry ; Vitamin B12 analogues ; Cobalamins and cobalt ; Meat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary The coupling of liquid chromatography and electrothermal atomic absorption spectrometry (LC-ETAAS) lowers the detection limit for identification of vitamin B12 analogues. Cobalamins and aqueous cobalt (II) were separated by reversed-phase liquid chromatography using a linear gradient: 26∶74 (v/v) methanol:0.05 M phosphate buffer (pH 4.2) to 50∶50 mixture over 8 min. The vitamins were quantitatively determined in the column effluent by measuring total cobalt by ETAAS. The analysis of meat and liver extracts by LC-ETAAS showed that the matrix did not interfere with the determination of cobalt. Hence, recoveries of cobalt in spiked meat and liver samples were satisfactory.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02290293
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Determination of methyl anthranilate and methyl N-methylanthranilate in beverages by liquid chromatography with fluorescence detection (1993)
    Springer
    Chromatographia 35 (1993), S. 681-684 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Column liquid chromatography ; Methyl anthranilate ; Methyl N-methylanthranilate ; Beverages ; Fluorimetric detection
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary A reversed phase HPLC method for the separation and determination of two anthranilic acid derivative esters, methyl anthranilate and methyl N-methylanthranilate, has been developed. These esters are aromatic compounds of wines and fruits. A gradient elution technique, using methanol: water changing from 40∶60 to 80∶20 mixtures, is used to decrease the analysis time. The sensitivity of the determination is improved by using fluorescence detection. The proposed method is applied to the determination of the esters in wines, brandies, grape beverages and fruit juices.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02267938
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
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