Flame Spectrophotometric Determination of Copper in Nonferrous Alloy

Abstract

The Beckman Model DU flame spectrophotometer has been applied to the determination of copper in aluminum-, tin-, and zinc-base alloys. The copper arc emission lines in an oxyacetylenc flame at 324.7 and 327.4 mg were

Flame Spectrophotometric Determination of Microgram Quantities of Copper

“…Most cations show considerable radiation interference; however, the increase in the radiant power of copper caused by the addition of nine cations to standard copper solutions was determinable at a wave length of 325.1 mg. Inasmuch as no preliminary separations are necessary, the method is adaptable to routine determinations.The results are as accurate as conventional microchemical procedures.ALTHOUGH there are many publications on the determina-jTX. tion of alkali and alkaline earth metals by flame photometry, relatively few investigators have reported on the flame photometric determination of copper (1,3,(9)(10)(11)(15)(16)(17). Of these, only Dean (3) and Jordan ( 11) have described methods in detail.…”

“…ALTHOUGH there are many publications on the determina-jTX. tion of alkali and alkaline earth metals by flame photometry, relatively few investigators have reported on the flame photometric determination of copper (1,3,(9)(10)(11)(15)(16)(17). Of these, only Dean (3) and Jordan ( 11) have described methods in detail.…”

Nonferrous Metallurgy

“…Dean obtained excellent results in the determination of copper using the flame photometer on aluminum, tin, and zincbase alloys (56). The 3247 copper line, being more sensitive, is recommended for concentrations less than 100 p.p.m., although this line is more subject to selfabsorption than the 3274 line recommended for concentrations exceeding 100 p.p.m.…”

Extraction

“…This is the trend of the previous biennium, ably reviewed by Swerdlow, Dalton, and Birks (286). As concluded by Brown (43), the time has passed when problems were being sought specifically to find a use for the transmission electron microscope. Now, the reflection microscope has been improved and is providing a new approach.…”