کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10564288 970533 2005 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Trace and ultratrace analysis in liquids by atomic spectrometry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Trace and ultratrace analysis in liquids by atomic spectrometry
چکیده انگلیسی
Inductively coupled plasma mass spectrometry (ICP-MS) and ICP atomic emission spectrometry (ICP-AES) are widely used as routine techniques in analytical laboratories for multi-elemental determination at the trace and ultratrace level in liquid samples of quite different matrix composition. Limits of detection (LODs) varied between the ng/ml range in ICP-AES down to fg/ml range in ICP-MS for trace-element analysis in aqueous solution. Using special separation and enrichment techniques for analytes, the LOD can be improved (e.g., in ICP-MS, down to the sub-fg/ml range, which is relevant for special applications in microelectronics, and determination of long-lived radionuclides (e.g., Pu) in body fluids or in environmental samples). In addition, ICP-MS possesses the unique capability of measuring precise, accurate isotope ratios, which is applied in the precise determination of element concentrations by the isotope-dilution technique. In this article the capability, advantages and limits of ICP-MS and ICP-AES are examined as the most important multi-elemental atomic spectrometric techniques in comparison with atomic absorption spectrometry or atomic fluorescence spectrometry for the analysis of trace impurities in liquid samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: TrAC Trends in Analytical Chemistry - Volume 24, Issue 3, March 2005, Pages 243-254
نویسندگان
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