Determination of Rubidium Salt on Copper-Coated Steel Welding By Use of Atomic Absorption.
Abstract
Rubidium salt on copper-coated steel welding wire used in arch welding is determined by atomic absorption. Six-inch pieces of the wire are treated with 2 ml of potassium chloride solution (0.75%) and 10 ml of water, the solution is boiled down to 3-5 ml, the volume is brought up to 10 ml in a volumetric flask, and atomic absorption measurements are made at 780.0 nm using an air-acetylene flame. The potassium chloride is necessary to reduce the ionization of rubidium; without the potassium chloride, much lower absorption readings were obtained for the rubidium. It is shown the coating of rubidium carbonate produced on copper-coated steel welding wire by passing the wire horizontally through a wick saturated with rubidium carbonate solution (10%) and then through an annular compressed felt squeegie is quite variable. The results obtained ranged from a low of 0.044 to a high of 0.168 mg of rubidium carbonate per linear ft. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1976
- Accession Number
- ADA040007
Entities
People
- George Norwitz
- Herman Gordon
- Martin E. Everett
Organizations
- Frankford Arsenal