Atomization of Bismuthane in a Dielectric Barrier Discharge: A Mechanistic Study

Analytical Chemistry
Jan KratzerJiří Dědina

Abstract

Atomization of bismuthane in a planar dielectric barrier discharge (DBD) atomizer was investigated using a variety of probes, including atomic absorption spectrometry (AAS) to monitor distribution of free atoms along the optical path and direct analysis in real time (DART) coupled to an Orbitrap mass spectrometer to identify the structure of the species arising from the hydride generator as well as the atomizer. Results obtained with the DBD were compared to those from a conventional externally heated quartz tube atomizer (QTA). Free Bi atoms were essentially absent outside the central part of the DBD atomizer, suggesting their high reactivity. The gas phase analyte fraction transported beyond the confines of the DBD or QTA atomizers, quantified by inductively coupled plasma mass spectrometry (ICP-MS), was less than 10%. The amount of Bi found in acidic leachates of the interiors of both atomizers, representing the fraction retained on their surfaces, was ca. 90%. These complementary experiments comprising the determination of recovered Bi in the nitric acid leachates from deposition in the atomizer on the one hand and quantification of the Bi fraction transportable outside the atomizer on the other, were in excellent agreement...Continue Reading

References

Oct 30, 2009·Analytical Chemistry·Daniel L G BorgesZoltán Mester
May 13, 2011·The Analyst·C MeyerJ Franzke
Nov 24, 2012·Combinatorial Chemistry & High Throughput Screening·Wameath S Abdul-Majeed, William B Zimmerman
Jul 30, 2014·Analytical and Bioanalytical Chemistry·Anastasia AlbertCarsten Engelhard

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