Plasma parameter and film casting optimization for the determination of particulate matter in a sol–gel matrix by radiofrequency glow discharge optical emission spectrometry (rf-GD-OES)

Literature Information

Publication Date 2005-12-12
DOI 10.1039/B511260E
Impact Factor 4.023
Authors

Tim M. Brewer, W. Clay Davis, R. Kenneth Marcus


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Abstract

Solids analysis has typically suffered from the lack of true analytical blanks and the inability to study particulate solids in their native state. Reported here is an approach to the analysis of particulate matter entrapped in a sol–gel matrix by radiofrequency glow discharge optical emission spectroscopy (rf-GD-OES). Sol–gel glasses are synthesized by acid-catalyzed condensation of methyltrimethoxysilane (MTMOS) and spun cast onto glass substrates. Slurries of powdered NIST standard reference materials (SRMs) 1884a Portland Cement and 1648 Urban Particulate Matter were incorporated into the films and analyzed for both main and trace element components. Cast films were analyzed to determine the discharge operating conditions and effects of particle size and deposited layer thickness while monitoring optical emission lines of a number of analytes. Using the sol–gel method, analytical blanks were obtained by use of an undoped sol–gel. Detection limits were determined for minor elements using background/blank subtraction and were found to be in the range of 1–12 μg g−1 in Portland Cement for elements Al, Ca, P, Mn and Fe, which corresponds to single-nanogram absolute detection limits.

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Journal of Analytical Atomic Spectrometry

Journal of Analytical Atomic Spectrometry
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The Journal of Analytical Atomic Spectrometry (JAAS) is the central journal for publishing innovative research on fundamentals, instrumentation, and methods in the determination, speciation and isotopic analysis of (trace) elements within all fields of application. This includes, but is not restricted to, the most recent progress, developments and achievements in all forms of atomic and elemental detection, isotope ratio determination, molecular analysis, plasma-based analysis and X-ray techniques. The journal welcomes full papers, communications, technical notes, critical and tutorial review articles, editorials, and comments, in addition to the Atomic Spectrometry Updates (ASU) literature reviews that are prepared by an expert panel. Submissions are welcome in the following areas, but note this list reflects the current scope and authors are strongly encouraged to contact the Editorial team if they believe that their work offers potentially new and emerging research relevant to the journal remit: Fundamental studies in the following. New and existing sources for atomic emission, absorption, fluorescence and mass spectrometry and those that provide both atomic and molecular information Sample introduction techniques for solids, liquids, gases Improvements in sensitivity, selectivity, precision, accuracy and/or robustness Isotope ratio measurements, including techniques for improving precision and mass bias correction Single channel and multichannel simultaneous detection systems Chemometrics, statistics, calibration techniques and internal standardisation Theoretical and numerical modelling of fundamental processes related to all of the above methodologies Novel or improved methodologies in areas of application including, but not limited to the following. Biosciences, including elemental, speciation and isotopic analysis in biological systems, immunoassays based on metal-labeled antibodies, bio-imaging, and nanoparticle toxicology Geochemistry Environmental science Materials science, including engineered nanoparticles and quantum dots Metrology, including reference materials Forensic analysis Food and agricultural sciences Energy Archaeometry Molecular analysis. Molecular sources for elemental and isotopic analysis Atomic sources for molecular analysis Atomic and molecular techniques simultaneously used for complementary chemical information All contributions are judged on originality and quality of scientific content, and appropriateness of length to content of new science.

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