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  • 1985-1989  (2)
  • 1980-1984  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Residue analysis of triazine herbicides in soil: Comparison of a capillary gas chromatographic and a high-performance liquid chromatographic method (1986)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 325 (1986), S. 377-380 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary Two methods for the determination of triazines in soil were developed and compared. After extraction of the residues with methanol and clean-up by gel permeation chromatography, the samples evaporated were analysed for triazines by splitless capillary gas-chromatography with NP-detector (GC-NPD) and microbore high performance liquid chromatography with UV detector (HPLC-UV) at 222 nm. Both methods gave similar results. The microbore HPLC method was suitable for the analysis of a number of triazines at 10 ppb whereas capillary GC method was used for the analysis of triazines at 5 ppb. Satisfactory average recoveries for the two methods were obtained at 80 ppb and 20 ppb, respectively.
    Notes: Zusammenfassung Zwei Methoden zur Bestimmung von Triazinen im Boden wurden entwickelt und miteinander verglichen. Nach der Extraktion der Rückstände mit Methanol und clean-up durch Gelpermeations-Chromatographie wurden die Proben eingeengt und auf Triazin-Rückstände hin untersucht. Zur Detektion wurden die splitlose Capillar-Gas-Chromatographie mit NP-Detektor (GC-NPD) und die Microbore-Hochdruckflüssig-Chromatographie mit UV-Detektor (HPLC-UV) bei 222 nm verwendet. Beide Methoden ergaben vergleichbare Ergebnisse bei einem Minimum an Zeit- und Materialaufwand und der Möglichkeit der Automatisation der Rückstandsanalytik. Die Microbore-HPLC-Methode erreichte nach einfachem GPC clean-up eine Nachweisgrenze von 10 ppb im Vergleich zu 5 ppb bei der Capillar-GC-Methode. Zufriedenstellende Wiederfindungsraten wurden für beide Methoden bei 80 ppb und 20 ppb ermittelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00505463
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Standardisierung des GSF-Tests: Bestimmung und Wertung von Einflußgrößen bei der Photomineralisierung (1983)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 314 (1983), S. 751-754 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Der von Korte und Mitarbeitern in den OECD-Richtlinien vorgeschlagene Test zur Bestimmung der Photomineralisierung adsorbierter organischer Chemikalien wird mit Hilfe14C-markierter Testsubstanzen hinsichtlich seiner Durchführbarkeit und Reproduzierbarkeit untersucht. Die Beeinflussung der Meßergebnisse durch die Art der Probenvorbereitung und Versuchsdurchführung wird beschrieben.
    Notes: Summary 14C-Labeled substances have been used to examine the feasibility and reproducibility of the test suggested by Korte and coworkers in the OECD Guidelines for determining the photomineralization of adsorbed organic chemicals. The influence of sample preparation and experimental procedure on the test results is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00467108
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Release routes of incorporated desmetryn from EVA-films. An example for the behavior of low volatility additives in polymers under outdoor conditions (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 34 (1987), S. 2069-2077 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Release of desmetryn into the gas phase from films of ethylene-vinyl acetate copolymer, in which the herbicide was incorporated for special agricultural applications, was investigated for comparison with release into water and under outdoor conditions. It could be shown that the rate of release of the active chemical into the gas phase was negligible compared with that into water and only slightly dependent on temperature in the range 0-75°C.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1987.070340602
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    Paper (German National Licenses)
    Fulltext
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