کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1241495 969208 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A semi-quantitative standard-less analysis method for laser-induced breakdown spectroscopy
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
A semi-quantitative standard-less analysis method for laser-induced breakdown spectroscopy
چکیده انگلیسی

We report on recently developed analytical software to model laser-induced breakdown spectroscopy emission spectra and predict sample composition using a proposed calibration-free algorithm. The model uses a database of atomic emission lines to create a theoretical emission spectrum for selected elements using defined plasma parameters. The resulting theoretical spectrum is fitted to experimental data obtained from a laser-induced breakdown spectroscopy instrument comprising of four compact spectrometers that image the plasma emission. Elemental concentrations are obtained by comparing observed and predicted spectra while varying the plasma temperature and relative elemental concentrations. The use of the model for analysis of major elements in bauxites, brass and mineral samples as well as the analysis of laboratory air is demonstrated. For the majority of elements investigated agreement within 25% is achieved between estimated and certified values.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 61, Issue 2, February 2006, Pages 200–209
نویسندگان
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