Guenter Knapp

Articles in Scholarly Journals [Incomplete List]

  1. Digestion of biological materials using the microwave-assisted sample combustion technique
    Microchemical Journal, vol. 82, no. 2, pp. 183–188, 2006
  2. Analytical Chemistry, vol. 76, no. 13, pp. 3525–3529, 2004
  3. Pressurized wet digestion in open vessels
    Analytical and Bioanalytical Chemistry, vol. 376, no. 5, pp. 715–720, 2003
  4. Efficiency of oxidation in wet digestion procedures and influence from the residual organic carbon content on selected techniques for determination of trace elementsPresented at the 2002 Winter Conference on Plasma Spectrochemistry, Scottsdale, AZ, USA, January 6???12, 2002.
    Journal of Analytical Atomic Spectrometry, vol. 17, no. 9, pp. 1121–1125, 2002
  5. Flow system with in-line separation/preconcentration coupled to graphite furnace atomic absorption spectrometry with W–Rh permanent modifier for copper determination in seawater
    Analytica Chimica Acta, vol. 463, no. 2, pp. 275–282, 2002
  6. Surface Corrosion Studies on High-Purity Quartz Vessels for Digestive Sample Preparation
    Microchimica Acta, vol. 137, no. 3-4, pp. 229–241, 2001
  7. Analytical Chemistry, vol. 73, no. 7, pp. 1515–1520, 2001
  8. Investigation of microwave assisted drying of samples and evaporation of aqueous solutions in trace element analysis
    Fresenius' Journal of Analytical Chemistry, vol. 366, no. 1, pp. 26–29, 2000
  9. Analytical Chemistry, vol. 71, no. 18, pp. 4050–4055, 1999
  10. Iodine determination in biological materials
    Fresenius' Journal of Analytical Chemistry, vol. 362, no. 6, pp. 508–513, 1998
  11. Counteracting the negative effects of rapeseed and rapeseed press cake in pig diets
    British Journal of Nutrition, vol. 78, no. 6, pp. 947–962, 1997
  12. Determination of halides by microwave induced plasma and stabilized capacitive plasma atomic emission spectrometry after on-line continuous halogen generation
    Talanta, vol. 44, no. 4, pp. 535–544, 1997
  13. Total digestion of silicate containing matrices (plants, soil, sludges) using a pressure ashing device with PFA-vessels
    Analytical and Bioanalytical Chemistry, vol. 356, no. 8, pp. 512–514, 1996
  14. Determination of noble metals after separation and preconcentration with silica-bonded complexing ligands
    Mikrochimica Acta, vol. 124, no. 3-4, pp. 235–240, 1996
  15. Separation of noble metal ions on silica with chemically bonded ligands
    Mikrochimica Acta, vol. 116, no. 1-3, pp. 83–90, 1994
  16. Multi-elemental analysis in biological samples by on-line preconcentration on 8-hydroxyquinoline-cellulose microcolumn coupled to simultaneous ICP-AES
    Fresenius' Journal of Analytical Chemistry, vol. 345, no. 8-9, pp. 600–606, 1993
  17. Application of an on-line preconcentration system in simultaneous ICP-AES
    Mikrochimica Acta, vol. 106, no. 3-6, pp. 191–201, 1992
  18. Mechanized techniques for sample decomposition and element preconcentration
    Mikrochimica Acta, vol. 104, no. 1-6, pp. 445–455, 1991
  19. Automatic off/on-line preconcentration for ICP-OES: Powerful instrumentation for water analysis
    Mikrochimica Acta, vol. 99, no. 3-6, pp. 257–265, 1989
  20. Einsatz des Hochdruckveraschers HPA nach Knapp [1] für die voltammetrische Bestimmung von Spurenelementen in biologischem Material
    Fresenius' Zeitschrift für Analytische Chemie, vol. 326, no. 2, pp. 142–145, 1987
  21. Preconcentration of trace elements on oxine cellulose
    Mikrochimica Acta, vol. 86, no. 5-6, pp. 401–415, 1985
  22. Der Weg zu leistungsfähigen Methoden der Elementspurenanalyse in Umweltproben
    Fresenius' Zeitschrift für Analytische Chemie, vol. 317, no. 3-4, pp. 213–219, 1984
  23. Novel method for the decomposition of organic and biological materials in an oxygen plasma excited at high frequency for elemental analysis
    Fresenius' Zeitschrift für Analytische Chemie, vol. 316, no. 5, pp. 482–487, 1983
  24. Selenbestimmung im ?g/g- und ng/g-Bereich in anorganischen und organischen Matrices nach Verdampfungsanalyse im dynamischen System durch AAS
    Fresenius' Zeitschrift f�r Analytische Chemie, vol. 305, no. 1, pp. 1–10, 1981
  25. The determination of arsenic at ng/g- and?g/g-levels in organic and biological matrices
    Mikrochimica Acta, vol. 75, no. 1-2, pp. 93–97, 1981
  26. Catalytic detection principle for high-performance liquid chromatography: Determination of enantiomeric iodinated thyronines in blood serum
    Journal of Chromatography B: Biomedical Sciences and Applications, vol. 224, no. 2, pp. 239–248, 1981
  27. Systematische Fehler bei der Selenbestimmung im ng/g-Bereich in biologischen Matrices nach dem Hydrid-AAS-Verfahren
    Fresenius' Zeitschrift für Analytische Chemie, vol. 300, no. 1, pp. 18–21, 1980
  28. X-ray fluorescence determination of traces of selenium in organic and biological matrices
    Fresenius' Zeitschrift für Analytische Chemie, vol. 301, no. 2, pp. 103–103, 1980
  29. High-pressure liquid chromatography for the determination of enantiomeric thyroxines in serum using catalytic detection
    Fresenius' Zeitschrift für Analytische Chemie, vol. 301, no. 2, pp. 187–187, 1980
  30. Ein Radioimmunoassay zur simultanen Bestimmung von T3 und T4 im Blutserum mit Hilfe kleiner Ionenaustauschersäulen
    Fresenius' Zeitschrift für Analytische Chemie, vol. 295, no. 5, pp. 402–405, 1979
  31. Eine mechanisierte katalytische Meßtechnik zur störungsfreien Bestimmung von Jodspuren in anorganischen und organischen Matrices
    Mikrochimica Acta, vol. 71, no. 3-4, pp. 291–302, 1979
  32. Ein Radioimmunoassay auf Ionenaustauschersäulen zur Bestimmung der Schilddrüsenhormone
    Fresenius' Zeitschrift für Analytische Chemie, vol. 290, no. 2, pp. 185–185, 1978
  33. Statistical investigations of interferences in graphite furnace atomic absorption spectroscopy
    Fresenius' Zeitschrift für Analytische Chemie, vol. 283, no. 2, pp. 97–103, 1977
  34. Statistical investigations of interferences in graphite furnace atomic absorption spectroscopy
    Fresenius' Zeitschrift für Analytische Chemie, vol. 283, no. 3, pp. 183–190, 1977
  35. Statistical investigations of interferences in graphite furnace atomic absorption spectroscopy
    Fresenius' Zeitschrift für Analytische Chemie, vol. 283, no. 1, pp. 9–14, 1977
  36. Ein neues system zur automatischen PBI-bestimmungA new technique for the automatic determination of protein-bound iodine
    Clinica Chimica Acta, vol. 30, no. 1, pp. 119–128, 1970