“…Atomic absorption spectroscopy has been found very useful in determining calcium and magnesium in ores, slags, and cast iron (25,177). Specific methods were described for determining aluminum (133,427,565), calcium (25), chromium (38,567), cobalt (118, 421), copper (21,23,38,421,541), lead (173,421), magnesium (25,253), manganese (22, 24, 38, 421, 567), nickel (38,421,567), tellurium (349), titanium (50,198,369), and zinc (253,540) in various ferrous materials.…”