کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1240564 969129 2007 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of charge transfer with non-argon gaseous species in mixed-gas inductively coupled plasma-atomic emission spectrometry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Investigation of charge transfer with non-argon gaseous species in mixed-gas inductively coupled plasma-atomic emission spectrometry
چکیده انگلیسی
Potential charge-transfer reactions with non-argon gaseous species in a mixed-gas inductively coupled plasma were probed by means of two different experimental methodologies, namely the plasma-related matrix-effect approach and the relative-intensity technique. The foreign gases, introduced one by one into the central channel, were oxygen, hydrogen, nitrogen, krypton, methane and carbon dioxide at volumetric concentrations of 15%, 10%, 5%, 100%, 3% and 3%, respectively. Both matrix effects and relative intensities showed no change in behavior for emission lines with excitation energies in the vicinity of the ionization potentials of the foreign gases. This pattern suggests that the contribution of charge transfer from the foreign-gas ion is not important to the overall ionization and excitation of the analyte, in the normal analytical zone of the plasma and at the concentration of foreign gases used here.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 62, Issue 3, March 2007, Pages 196-210
نویسندگان
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