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Simplex optimization of aluminum analysis by electrothermal atomic absorption spectrometry

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Date Issued:
1997
Summary:
A novel simplex method was applied for the systematic selection of optimal concentrations of two matrix modifiers, nitric acid and magnesium nitrate, for aluminum analysis in aqueous samples using electrothermal atomic absorption spectrometry. Independent optimizations of sensitivity were performed over several practical concentration ranges for each matrix modifier and optimum concentrations were chosen by comparison of data obtained for the resulting simplexes. The results indicate a strong interdependency between magnesium and nitric acid in the achievement of conditions for optimum sensitivity. Using the optimized conditions, detection limits of less than 7 parts per billion of aluminum were achieved, with relative standard deviations of less than 10%. A variety of aqueous samples were analyzed yielding relative standard deviations from 2 to 10%.
Title: Simplex optimization of aluminum analysis by electrothermal atomic absorption spectrometry.
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Name(s): Creelman, David Karl.
Florida Atlantic University, Degree grantor
Haky, Jerome E., Thesis advisor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1997
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 60 p.
Language(s): English
Summary: A novel simplex method was applied for the systematic selection of optimal concentrations of two matrix modifiers, nitric acid and magnesium nitrate, for aluminum analysis in aqueous samples using electrothermal atomic absorption spectrometry. Independent optimizations of sensitivity were performed over several practical concentration ranges for each matrix modifier and optimum concentrations were chosen by comparison of data obtained for the resulting simplexes. The results indicate a strong interdependency between magnesium and nitric acid in the achievement of conditions for optimum sensitivity. Using the optimized conditions, detection limits of less than 7 parts per billion of aluminum were achieved, with relative standard deviations of less than 10%. A variety of aqueous samples were analyzed yielding relative standard deviations from 2 to 10%.
Identifier: 9780591333923 (isbn), 15399 (digitool), FADT15399 (IID), fau:12166 (fedora)
Collection: FAU Electronic Theses and Dissertations Collection
Note(s): Thesis (M.S.)--Florida Atlantic University, 1997.
Charles E. Schmidt College of Science
Subject(s): Atomic absorption spectroscopy
Aluminum--Analysis
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/15399
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.