Size is everything

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Blog Post

  • Published: May 14, 2012
  • Author: Steve Down
  • Channels: Chemometrics & Informatics / UV/Vis Spectroscopy / Infrared Spectroscopy / MRI Spectroscopy / NMR Knowledge Base / Base Peak / Atomic / X-ray Spectrometry / Proteomics / Raman

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A series of mini-graphite tubes have been fabricated by scientists in Germany to be used as sample holders for high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GFAAS). As they describe in the Journal of Analytical Atomic Spectrometry, the internal diameters are way smaller than conventional tubes, at 1, 1.5 and 2 mm compared with 5.8 mm. These resulting smaller atomiser volumes are responsible for better sensitivities for most elements tested, despite a loss of lamp radiation for the smaller tubes. For the 2-mm tube, sensitivities were improved by a factor of 6-12 for 51 elements.


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