Abstract

A spectrographic technique using a specially designed cup electrode is proposed for the determination of indium and gallium in a solution of cadmium telluride. The electrode consists of an alumina cup which serves as a reservoir for the sample and a central tungsten rod supporting a graphite rod. It allows the excitation under low voltage over damped discharge. The method is especially useful for analysis of small quantities of material. The addition of a suitable amount of lithium has been found to enhance the intensity of the neutral atom lines of indium and gallium. Approximate determination limits for indium and gallium are 0.5 μg/ml, and the coefficient of variation for the determination is about 6% at the 5 μg/ml level.

Optical switching in cadmium telluride using a light-induced electrode nonlinearity

Mehrdad Ziari and William H. Steier
Appl. Opt. 32(29) 5711-5723 (1993)

Spectrographic Determination of Trace Elements in 70/30 Brass and Admiralty Brass. Part I*

P. A. Leichtle
J. Opt. Soc. Am. 34(8) 454-463 (1944)

Far-Infrared Spectrum of Cadmium Telluride

O. M. Stafsudd, F. A. Haak, and K. Radisavljević
J. Opt. Soc. Am. 57(12) 1475-1476 (1967)

Electro-optic coefficient spectrum of cadmium telluride

David B. Chenault, Russell A. Chipman, and Shih-Yau Lu
Appl. Opt. 33(31) 7382-7389 (1994)

The Effect of Alkali and Alkaline Earth Salts on the Spectrographic Determination of Strontium*

E. Fast and J. Rud Nielsen
J. Opt. Soc. Am. 37(8) 614-622 (1947)