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  • DNA extraction  (1)
  • Diffuse reflectance spectrometry  (1)
  • Springer  (2)
  • American Physical Society (APS)
  • Blackwell Publishing Ltd
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Publisher
  • Springer  (2)
  • American Physical Society (APS)
  • Blackwell Publishing Ltd
Years
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solid state electrochemistry 1 (1997), S. 62-67 
    ISSN: 1433-0768
    Keywords: Key wordsSpectroelectrochemistry ; Diffuse reflectance spectrometry ; Solid state electrochemistry ; Voltammetry ; Microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract An instrumental setup is described which allows electrochemical measurements to be performed with solid particles immobilized on the surface of a graphite electrode with in situ recording of diffuse reflectance spectra under an incident light microscope. The instrument used includes a special electrochemical cell and a microscope which is interfaced by a light␣guide to a transputer-integrated photodiode-array spectrometer allowing measurements ranging from 320 to 950 nm with a resolution of 3.2 nm/pixel and a PC-interfaced potentiostat. The 0R0 geometry of the optical arrangement and the use of crossed polarization filters for blocking specular reflectance makes it possible to use the Kubelka-Munk function for quantifying the optical measurements. The above instrument has been used for the study of the electrochromic system of solid silver octacyanomolybdate(IV/V) adjacent to a silver nitrate solution. The in situ diffuse reflec tance spectroelectrochemical measurements prove that the electrochemical reaction starts at the graphite/sample interface and then advances into the bulk of the sample towards the sample/electrolyte interface. The ratios Red:Ox determined by spectrometry and chronocoulometry as a function of electrode potentials are identical.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1572-9818
    Keywords: cpDNA ; DNA extraction ; fingerprinting ; forest trees ; M13 fingerprinting ; method ; PCR ; rDNA ; RFLP ; rhododendron ; plant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Four DNA extraction protocols were compared for ability to produce DNA from the leaves or needles of several species: oak, elm, pine, fir, poplar and maize (fresh materials) and rhododendron (silica dried or frozen material). With the exception of maize and poplar, the species are known to be difficult for DNA extraction. Two protocols represented classical procedures for lysis and purification, and the other two were a combination of classical lysis followed by anion exchange chromatography. The DNA obtained from all procedures was quantified and tested by PCR and Southern hybridisation.Test results indicated superiority of one of the four protocols; a combination of CTAB lysis followed by anion exchange chromatography which enabled DNA extraction from all seven species. A second protocol also produced DNA from leaves or needles of all species investigated and was well suited for PCR applications but not Southern hybridisations. The remaining protocols produced DNA from some but not all species tested. Abbreviations: CTAB, hexadecyltrimethylammonium bromide; EtOH, Ethanol; TBE, tris-borate-EDTA.
    Type of Medium: Electronic Resource
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