Gunther Weber

Summary

Affiliation: Institute of Spectrochemistry and Applied Spectroscopy
Country: Germany

Publications

  1. ncbi request reprint Total determination of metal-binding carbohydrates in plant extracts by using FIA with electrochemical detection
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Dortmund, Germany
    Fresenius J Anal Chem 367:356-8. 2000
  2. ncbi request reprint Determination of phytosiderophores by anion-exchange chromatography with pulsed amperometric detection
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Dortmund, Germany
    J Chromatogr A 928:171-5. 2001
  3. ncbi request reprint Effect of extraction pH on metal speciation in plant root extracts
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Dortmund, Germany
    Fresenius J Anal Chem 371:921-6. 2001
  4. ncbi request reprint Speciation of iron coordinated by phytosiderophores by use of HPLC with pulsed amperometric detection and AAS
    Gunther Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Bunsen Kirchhoff Str 11, 44139 Dortmund, Germany
    Anal Bioanal Chem 373:767-71. 2002
  5. ncbi request reprint Speciation of Mg, Mn and Zn in extracts of medicinal plants
    Gunther Weber
    Institute of Spectrochemistry and Applied Spectroscopy, Bunsen Kirchhoff Str 11, 44139, Dortmund, Germany
    Anal Bioanal Chem 375:1067-73. 2003
  6. ncbi request reprint Ultratrace voltammetric determination of DNA-bound platinum in patients after administration of oxaliplatin
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Bunsen Kirchhoff Str 11, 44139 Dortmund, Germany
    Anal Bioanal Chem 380:54-8. 2004
  7. doi request reprint Evaluation of different column types for the hydrophilic interaction chromatographic separation of iron-citrate and copper-histidine species from plants
    Jessica Köster
    Leibniz Institut für Analytische Wissenschaften ISAS eV, Dortmund, Germany
    J Chromatogr A 1218:4934-43. 2011
  8. doi request reprint Investigation of ascorbate-mediated iron release from ferric phytosiderophores in the presence of nicotianamine
    Gunther Weber
    ISAS Institute for Analytical Sciences, Bunsen Kirchhoff Str 11, 44139 Dortmund, Germany
    Biometals 21:503-13. 2008
  9. doi request reprint Isoelectric focusing of small non-covalent metal species from plants
    Jessica Köster
    Leibniz Institut für Analytische Wissenschaften, ISAS, Dortmund, Germany
    Electrophoresis 32:772-81. 2011
  10. doi request reprint Senescence-induced iron mobilization in source leaves of barley (Hordeum vulgare) plants
    Rongli Shi
    Molecular Plant Nutrition, Leibniz Institute of Plant Genetics and Crop Plant Research IPK, Corrensstr 3, 06466 Gatersleben, Germany
    New Phytol 195:372-83. 2012

Collaborators

  • Bernd Kastenholz
  • Jessica Köster
  • Rongli Shi
  • Nicolaus von Wirén
  • Robert Zabel
  • Mohammad Reza-Hajirezaei
  • Fusuo Zhang
  • Chunqin Zou
  • Heiko Hayen

Detail Information

Publications12

  1. ncbi request reprint Total determination of metal-binding carbohydrates in plant extracts by using FIA with electrochemical detection
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Dortmund, Germany
    Fresenius J Anal Chem 367:356-8. 2000
    ..The latter detection mode is more sensitive, but less selective for carbohydrates...
  2. ncbi request reprint Determination of phytosiderophores by anion-exchange chromatography with pulsed amperometric detection
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Dortmund, Germany
    J Chromatogr A 928:171-5. 2001
    ..The method is used for the determination of phytosiderophores in root washings of iron-deficient and non-deficient wheat and barley plants...
  3. ncbi request reprint Effect of extraction pH on metal speciation in plant root extracts
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Dortmund, Germany
    Fresenius J Anal Chem 371:921-6. 2001
    ....
  4. ncbi request reprint Speciation of iron coordinated by phytosiderophores by use of HPLC with pulsed amperometric detection and AAS
    Gunther Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Bunsen Kirchhoff Str 11, 44139 Dortmund, Germany
    Anal Bioanal Chem 373:767-71. 2002
    ..The method has been applied to root washings of iron-deficient wheat and barley plants and to a xylem exudate of non-deficient maize...
  5. ncbi request reprint Speciation of Mg, Mn and Zn in extracts of medicinal plants
    Gunther Weber
    Institute of Spectrochemistry and Applied Spectroscopy, Bunsen Kirchhoff Str 11, 44139, Dortmund, Germany
    Anal Bioanal Chem 375:1067-73. 2003
    ..For zinc, many more species are detected, and there is no correlation to carbohydrates; instead (poly)phenols are involved in zinc complexation...
  6. ncbi request reprint Ultratrace voltammetric determination of DNA-bound platinum in patients after administration of oxaliplatin
    G Weber
    Institut fur Spektrochemie und Angewandte Spektroskopie, Bunsen Kirchhoff Str 11, 44139 Dortmund, Germany
    Anal Bioanal Chem 380:54-8. 2004
    ....
  7. doi request reprint Evaluation of different column types for the hydrophilic interaction chromatographic separation of iron-citrate and copper-histidine species from plants
    Jessica Köster
    Leibniz Institut für Analytische Wissenschaften ISAS eV, Dortmund, Germany
    J Chromatogr A 1218:4934-43. 2011
    ..Also in unspiked solutions iron citrate of 3:4 stoichiometry (plus 1:2 and 2:2) is detectable, but no species of 3:3 stoichiometry. Significant differences of related species patterns are found in real plant samples...
  8. doi request reprint Investigation of ascorbate-mediated iron release from ferric phytosiderophores in the presence of nicotianamine
    Gunther Weber
    ISAS Institute for Analytical Sciences, Bunsen Kirchhoff Str 11, 44139 Dortmund, Germany
    Biometals 21:503-13. 2008
    ..Hence, the combined results of electrochemistry and mass spectrometry indicate an ascorbate-mediated mechanism for the iron release from ferric PS, which highlights the role of ascorbate as a simple, but effective plant reductant...
  9. doi request reprint Isoelectric focusing of small non-covalent metal species from plants
    Jessica Köster
    Leibniz Institut für Analytische Wissenschaften, ISAS, Dortmund, Germany
    Electrophoresis 32:772-81. 2011
    ..Limitations of the proposed methods (preparative IEF and CIEF) and consequences of the results with respect to metal speciation in plants are discussed...
  10. doi request reprint Senescence-induced iron mobilization in source leaves of barley (Hordeum vulgare) plants
    Rongli Shi
    Molecular Plant Nutrition, Leibniz Institute of Plant Genetics and Crop Plant Research IPK, Corrensstr 3, 06466 Gatersleben, Germany
    New Phytol 195:372-83. 2012
    ....
  11. ncbi request reprint Improved separation of palladium species in biological matrices by using a combination of gel permeation chromatography and isotachophoresis
    Gunther Weber
    Institute of Spectrochemistry and Applied Spectroscopy ISAS, Dortmund, Germany
    Electrophoresis 25:1758-64. 2004
    ..However, cITP reveals that each of the separated peaks is still a mixture of at least five different compounds...
  12. doi request reprint Comparative study of the oxidation behavior of sulfur-containing amino acids and glutathione by electrochemistry-mass spectrometry in the presence and absence of cisplatin
    Robert Zabel
    Leibniz Institut für Analytische Wissenschaften ISAS e V, Otto Hahn Str 6b, 44227, Dortmund, Germany
    Anal Bioanal Chem 408:1237-47. 2016
    ..This is traced back to thiol reactivity and highlights the important role of sulfenic acid intermediates, which may function as a switch between different oxidation routes...