% 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{Wissel:1499,
      author       = {Wissel, H. and Mayr, C. and Lücke, A.},
      title        = {{A} new approach for the isolation of cellulose from
                      aquatic plant tissue and freshwater sediments fro stable
                      isotope analysis},
      journal      = {Organic geochemistry},
      volume       = {39},
      issn         = {0146-6380},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-1499},
      pages        = {1545 - 1561},
      year         = {2008},
      note         = {We are indebted to Mrs. A. Richter for IR spectroscopic
                      analysis. D. Enters provided sediments from the Sacrower
                      See. Determination of aquatic plants by B. Messyasz is
                      gratefully acknowledged. We thank T.W.D. Edwards and P.
                      Finch for valuable comments. Financial support was provided
                      by the German Federal Ministry of Education and Research in
                      the framework of the German Climate Research Programme
                      DEKLIM (Grant 01 LD 0001).},
      abstract     = {Isotope studies of the cellulose of plant tissue and
                      sediments are increasingly important in ecological and
                      palaeoenvironmental studies. The reliability of analytical
                      results in these investigations depends on the ability to
                      separate pure cellulose from the organic and inorganic
                      matrix. This study evaluates the performance of a new
                      approach for the isolation of cellulose based on wet
                      oxidation and cellulose dissolution in cuprammonium solution
                      (CUAM) with respect to conventional techniques using solely
                      wet oxidation or wet oxidation in combination with density
                      separation. All the methods led to identical changes in
                      isotopic composition of standard cellulose powder samples,
                      providing evidence that CUAM-treated cellulose is
                      isotopically indistinguishable from cellulose treated with
                      conventional methods. The performance of CUAM with aquatic
                      plant tissue was at least equal to those of the other
                      methods used and in numerous cases achieved better results
                      in terms of cellulose purification and precision of the
                      isotope signal. Compared to conventional methods,
                      contamination of several samples with small amounts of
                      minerogenic matter and biogenic opal could be completely
                      removed from the extraction residue with CUAM. While
                      conventional methods failed to result in isolation of
                      cellulose from two typical fine-grained lacustrine
                      sediments, extraction residues from CUAM treatments revealed
                      infrared (IR) spectra resembling those of standard cellulose
                      powder, without evidence of minerogenic matter, biogenic
                      opal, chitin or refractory organic matter. A series of
                      sedimentary materials ranging from soil, to sediment trap
                      and sediment core material were extracted with CUAM. IR
                      spectra of all materials tested correspond to cellulose, and
                      carbon and oxygen isotope compositions of the extracted
                      cellulose fractions agreed with previous knowledge about the
                      samples. Our results prove that CUAM is a reliable method
                      that yields clean and pure cellulose for high quality
                      isotope analysis from plant tissue and different types of
                      sediments alike. (C) 2008 Elsevier Ltd. All rights
                      reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-5},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB143},
      pnm          = {Geosysteme - Erde im Wandel},
      pid          = {G:(DE-Juel1)FUEK405},
      shelfmark    = {Geochemistry $\&$ Geophysics},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000260948800006},
      doi          = {10.1016/j.orggeochem.2008.07.014},
      url          = {https://juser.fz-juelich.de/record/1499},
}