Abstract
Microanalysis using mechanized solid sampling with graphite-furnace atomic-absorption gives accurate results in the determination of trace elements in different NBS Standard Reference Materials. Analytical conditions are optimized by use of the method of standard additions, and all capabilities of a microcomputer controlled graphite furnace, such as matrix modification by oxygen ashing, temperature ramping and maximum power heating for atomization are used. Direct calibration against acid standards is possible.
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