Some Difficult Working Areas in Atomic-Absorption Flame Photometry
Some specific problems encountered in quantitative determinations by atomic-absorption flame photometry are reviewed. These result from instrument limitations, analytical behavior of analytes, and chemical composition of original and/or prepared samples. Different methods are discussed which may be used to overcome these difficulties by choosing better working conditions, different types of flames, and proper sample preparation. Chemical interference is discussed in detail and illustrated with experimental results obtained in the study of several frequent interference systems. Attention is given to calibration procedures and dataprocessing and representation.
KeywordsFree Atom Organic Solvent Extraction Difficult Area Methyl Isobutyl Ketone Interference Diagram
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