High-conversion-rate electronic integrator with digital readout for flameless atomic absorption spectrometry.
Bertram-F Jr.; Taphorn-JE III; Robbins-WB; Younginger-EJ; Caruso-JA
Anal Chem 1976 Dec; 48(14):2271-2274
The application of flameless atomic absorption spectrometry to trace metal analyses has posed some problems in evaluating the analytical response, particularly in obtaining reproducible peak heights. This study describes a digital integrator where the voltage to frequency conversion is accomplished by firing a unijunction transistor. A detailed description of the analog signal conditioning and the peak detection circuitry is provided. This high rate of conversion electronic integrator is useful in flameless atomic absorption spectrometry. With the inclusion of variable input gain to extend the usable range of incoming signals, and the provision to balance the signals, this unit can be used in the emission mode. Also not precluded are other experiments requiring digital integration. (Grant No. R01-OH-00415)
NIOSH-Publication; NIOSH-Grant; Grants-other; Analytical-methods; Measurement-instrumentation; Trace-metals; Trace-substances; Contaminants; Metals; Equipment; Analytical-instrumentation; Instrumentation
Chemistry Department of Chemistry University of Cincinnati Cincinnati, Ohio 45221
Other Occupational Concerns; Grants-other
University of Cincinnati, Cincinnati, Ohio