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@ARTICLE{Krachler:61060,
      author       = {Krachler, M. and Emons, H. and Barbante, C. and Cozzi, J.
                      P. and Cescon, P. and Shotyk, W.},
      title        = {{I}nter-method comparison for the determination of antimony
                      and arsenic in peat samples},
      journal      = {Analytica chimica acta},
      volume       = {458},
      issn         = {0003-2670},
      address      = {Amsterdam},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-61060},
      pages        = {387 - 396},
      year         = {2002},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Four analytical approaches, based on different physical
                      principles, for the determination of antimony (Sb) and
                      arsenic (As) in ancient peat samples were critically
                      evaluated: (a) open vessel digestion/hydride
                      generation-atomic absorption spectrometry (HG-AAS), (b)
                      closed-pressurized digestion in a microwave oven followed by
                      sector field-inductively coupled plasma-mass spectrometry
                      (SF-ICP-MS), (c) digestion in a microwave autoclave and
                      subsequent quadrupole-inductively coupled plasma-mass
                      spectrometry (Q-ICP-MS) measurements and (d) instrumental
                      neutron activation analysis (E, AA). The quality control
                      scheme applied, always included the use of adequate plant
                      reference materials to ensure the accuracy and precision of
                      the analytical procedures. Additionally, two internal peat
                      reference materials were analyzed using all four analytical
                      approaches, generally showing good agreement for both
                      elements. Method detection limits for As and Sb provided by
                      all procedures were approximately 5 and 2 ng g(-1) which is
                      sufficiently low for the reliable quantification of both
                      elements in ancient, pre-anthropoaenic peat samples. A
                      comparison of As and Sb concentrations in a set of peat
                      samples determined by INAA, HG-AAS and SF-ICP-MS revealed
                      that INAA underestimated the values in a systematic manner,
                      whereas HG-AAS and SF-ICP-MS data agreed very well. Best
                      precision of the results was obtained by analytical
                      procedures involving HG-AAS or Q-ICP-MS and varied from 3.6
                      to $4.3\%$ and 7.1 to $7.5\%$ for As (at about 0.5 mug
                      g(-1)) and Sb (at about 0.1 mug g(-1)), respectively. The
                      highest sample throughput (40 samples per run accomplished
                      in 2h) combined with low risk of sample contamination could
                      be realized in the high-pressure microwave autoclave. The
                      amount of sample required by all approaches was 200 mg,
                      except for INAA which needed at least 25 times more sample
                      mass to achieve comparable detection limits. For the
                      quantification of As and Sb, inductively coupled plasma-mass
                      spectrometry (ICP-MS) was preferred over LNAA and HG-AAS,
                      mainly because (a) less sample is needed and (b) As and Sb
                      can be determined simultaneously. In addition, ICP-MS offers
                      the possibility to measure concurrently a wide range of
                      other elements which also are of environmental interest. (C)
                      2002 Elsevier Science B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-III},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB49},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Chemistry, Analytical},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000175752500015},
      doi          = {10.1016/S0003-2670(02)00061-2},
      url          = {https://juser.fz-juelich.de/record/61060},
}