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High-conversion-rate electronic integrator with digital readout for flameless atomic absorption spectrometry.

Authors
Bertram-F Jr.; Taphorn-JE III; Robbins-WB; Younginger-EJ; Caruso-JA
Source
Anal Chem 1976 Dec; 48(14):2271-2274
NIOSHTIC No.
00071488
Abstract
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)
Keywords
NIOSH-Publication; NIOSH-Grant; Grants-other; Analytical-methods; Measurement-instrumentation; Trace-metals; Trace-substances; Contaminants; Metals; Equipment; Analytical-instrumentation; Instrumentation
Contact
Chemistry Department of Chemistry University of Cincinnati Cincinnati, Ohio 45221
CODEN
ANCHAM
Publication Date
19761201
Document Type
Journal Article
Funding Amount
31941.00
Funding Type
Grant
Fiscal Year
1977
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-00415
Issue of Publication
14
ISSN
0003-2700
Priority Area
Other Occupational Concerns; Grants-other
Source Name
Analytical Chemistry
State
OH
Performing Organization
University of Cincinnati, Cincinnati, Ohio
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