Manufacturing Industry

Guide to Engineered Materials: Testing/Analysis/Metallography.

Advanced Materials & Processes, December, 2001

Bulk-analysis methods AAS (atomic-absorption spectrometry): Quantitative analysis of approximately 70 elements. Detection limits range from subparts per billion to parts per million. Limitations: Cannot analyze directly for sulfur, carbon, or nitrogen; basically a single-element technique.

COMB (high-temperature combustion): Determination of carbon and sulfur in metals and organics. Limitations: Specimen must be homogeneous; graphite-bearing specimens require special handling; method is destructive. EFG (elemental and functional-group analysis): Identification of organic compounds and determination of their empirical formulas; determination of the composition of a mixture; determination of purity. ESR (electron spin resonance): Identification of elements...

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