Physical Sciences and Mathematics Commons^™

Development And Testing Of A Double-Beam Absorption Spectrograph For The Simultaneous Determination Of Different Cations In Water, William H. Dennen

KWRRI Research Reports

Construction and testing of a double-beam absorption spectrographic analysis system using a d. c. arc multielement source has been conducted. An optical system design which brings analytical and reference beams together to illuminate the upper and lower portions of the spectrograph slit has been shown to be functional. However, ad. c. arc will not serve as a multielement source for the intended purposes because of excessive thermal broadening of emission lines.

A direct excitation d. c. arc method was reviewed which can be used for the rapid determination of some cations in water.

Determination Of Trace Elements In Water Utilizaing Atomic Absorption Spectroscopy Measurement, Gary D. Christian, J. Preston Miles Iii, Ronald Sensmeier, Melvin Sensmeier, Loraine Craig, Lynn Phibrick, Sudarshan Lal

KWRRI Research Reports

A variety of flameless atomic absorption methods have been investigated for the possible determination of trace elements in water. The general applicability of each technique was determined and where applicable, procedures have been developed for the determination of trace elements in natural waters.

Metals were preconcentrated by electrodeposition on a wire. The metals were then atomized for atomic absorption measurement by resistive heating of the wire. As little as 0.01 part per million (ppm) of mercury could be determined in this way.

A mercury cold vapor cell was constructed in which the sample is treated with a reducing agent to …