% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Bulska:81075,
      author       = {Bulska, E. and Wysocka, I. A. and Wierzbicka, M. H. and
                      Proost, K. and Janssens, K. and Falkenberg, G. and DESY},
      title        = {{I}n vivo investigation of the distribution and the local
                      speciation of selenium in {A}llium cepa {L}. by means of
                      microscopic {X}-ray absorption near-edge structure
                      spectroscopy and confocal microscopic {X}-ray fluorescence
                      analysis},
      journal      = {Analytical chemistry},
      volume       = {78},
      issn         = {0003-2700},
      address      = {Columbus, Ohio},
      publisher    = {American Chemical Society},
      reportid     = {PHPPUBDB-3402},
      pages        = {7616-7624},
      year         = {2006},
      abstract     = {In this work, microscopic X-ray absorption near-edge
                      structure spectroscopy (mu-XANES) and confocal microscopic
                      X-ray fluorescence analysis (mu-XRF) were used for the in
                      vivo determination of the distribution of total selenium and
                      for the local speciation of selenium in roots and leaves of
                      onion. Selected Allium cepa L. plants were grown
                      hydroponically in a standard medium containing inorganic
                      selenium compounds (selenite or selenate). The measurements
                      were performed in vivo, that is, on living plants without
                      the need for any form of sampling or sample pretreatment and
                      without the necessity for cutting plant tissues into pieces.
                      Distinct energy differences of the XANES spectra of various
                      selenium reference compounds having different oxidation
                      states allow adjusting the excitation energies used for
                      mu-XRF mapping in such a manner that the distribution of
                      selenium in various oxidation states is obtained with a
                      spatial resolution of a few tens of micrometers within the
                      virtual cross section of the onion tissues. We find that the
                      ratio of inorganic to amino acid selenium compounds differs
                      in various subparts of the plant. Detailed in vivo
                      investigation of the distribution of various selenium
                      species in virtual cross sections of root tips and green
                      leaf shows that the selenium transport takes place via
                      different mechanisms, depending on the nature of the
                      selenium compounds originally taken up.},
      keywords     = {Amino Acids: analysis / Microscopy, Confocal: methods /
                      Microscopy, Fluorescence: methods / Onions: chemistry /
                      Organoselenium Compounds: analysis / Oxidation-Reduction /
                      Plant Leaves: chemistry / Plant Leaves: ultrastructure /
                      Plant Roots: chemistry / Plant Roots: ultrastructure /
                      Selenium: analysis / Spectrometry, X-Ray Emission: methods /
                      Amino Acids (NLM Chemicals) / Organoselenium Compounds (NLM
                      Chemicals) / Selenium (NLM Chemicals)},
      cin          = {HASYLAB},
      ddc          = {540},
      cid          = {$I:(DE-H253)HASYLAB_-2012_-20130307$},
      pnm          = {DORIS Beamline L (POF1-550)},
      pid          = {G:(DE-H253)POF1-L-20130405},
      experiment   = {EXP:(DE-H253)D-L-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17105151},
      UT           = {WOS:000242021400003},
      doi          = {10.1021/ac060380s},
      url          = {https://bib-pubdb1.desy.de/record/81075},
}