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This publication is an overview of atomic absorption (AA) theory. This is based upon the Varian booklet 'Introducing Atomic Absorption Analysis' . For detailed graphite furnace and Zeeman theory, refer to 'Analytical Methods for Graphite Furnace Atomizers' . An atomic absorption spectrometer is an instrument which is used to analyze the concentrations of metals in solution. Sixty eight elements can be determined directly over a wide range of concentrations from ppb to percent levels, with good precision–typically better than 1 % RSD. Sample preparation is generally simple and frequently involves little more than dissolution in an appropriate acid. The instrument is easy to tune and operate.
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