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Thermodynamic approach to the optimization of instrumental parameters in inductively coupled plasma atomic fluorescence spectrometry for the analysis of superconductors

Conference ·
OSTI ID:273563
;  [1];  [2]
  1. Moscow State Univ., Moscow (Russian Federation)
  2. Univ. of Massachusetts, Amherst, MA (United States)
Successful applications of inductively coupled plasma atomic fluorescence spectrometry (ICP AFS) for multielement simultaneous analysis and obtaining adequate analytical performance require the right selection of compromise conditions for spectrum excitation and registration, especially when spectrochemically different elements are to be determined in a sample. Therefore, the study of the physicochemical processes in the atomizer (ICP) is important. High-temperature superconducting Y-Ba-Cu-O and Bi-Pb-Ca-Sr-Cu-O ceramics represent the systems that consist of spectrochemically different elements. The purpose of the current study is to perform the thermodynamic simulations of the processes in the ICP with Y, Ba, and Cu or Bi, Pb, Ca, Sr, and Cu aqueous solutions nebulized into it, and to study the behavior of the fluorescence signal of the above elements under various experimental conditions. All the experimental measurements were performed using an AFS 2000 spectrometer (Baird Corp., Bedford MA, USA).
OSTI ID:
273563
Report Number(s):
CONF-960113--
Country of Publication:
United States
Language:
English