Analysis by Flameless Atomic Absorption.
Abstract
Techniques for the analysis of trace metals in natural waters as well as other samples of biological and environmental interest by flameless atomic absorption spectrometry have been developed. Aqueous standard and unknown solutions are applied to a tungsten-rhenium wire loop atomizer, which can be electrically heated. Employing pure aqueous standards, peak height absorbance was utilized as a measure of the transient atomic absorption signal in order to establish calibration curves for zinc, iron, chromium, silver, manganese, cadmium, copper, and lead. Natural water samples, provided by the United States Army Environmental Hygiene Agency, have been analyzed for these metals. The results obtained from the wire loop aliquot method are compared to those found by 'referee' analysis techniques -- flame and nonflame atomic absorption spectrometry. Any interferences arising from the presence of transition metal salts or the sodium salts of various common anions, each at a concentration of ca. 10/3M, in 1.0 ppm solutions of the above metals are reported and evaluated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 20, 1976
- Accession Number
- ADA032016
Entities
People
- Charles L. Yuan
- Donald G. Davis
- John F. Molina
- Judy V. Chauvin
- Mike H. West
Organizations
- University of New Orleans