University of North Florida
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Contact Info

Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Raymond E. Dessy

Abbrev:
Dessy, R.E.
Other Names:
Address:
Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA
Phone:
540-231-5842
Fax:
540-231-3255

Citations 5

"Microelectronics In Analytical Chemistry"
J. Chem. Inf. Comput. Sci. 1985 Volume 25, Issue 3 Pages 282-288
Raymond E. Dessy

Abstract: Although small computer systems have impacted the practice of analytical chemistry by their ability to help capture and electronically manipulate data in traditional ways, even greater effects of this microelectronic revolution are becoming apparent. First, microelectronic fabrication techniques are being used to make new classes of transducers. Second, new integrated circuits are being developed that allow the chemist to correlate, convolve, and domain convert data both before and after capture by the computer. These front-end and back-end processing elements open up the world of small computers to techniques usually requiring large mainframe processors. Third, arrays of nonspecific sensors are being used that are based on solid-state detectors and chemometric techniques. Finally, new classes of self-optimizing instruments are being created. Typical examples from each of these areas are presented.
General Computer Optimization

"The Electronic Toolbox. 2"
Anal. Chem. 1985 Volume 57, Issue 12 Pages 1298A-1314A
Raymond E. Dessy

Abstract: Integrated circuits can provide specific functions for operations such as Fourier transform, filtering, correlation and convolution. Detector arrays and non-specific sensors are available for rapid collection and resolution of spectra, measurement of particle size and distribution and the monitoring of atmospheres for hazardous components. An example for the use of self-optimizing instruments involves the establishment of conditions for flow injection analysis.
Computer Optimization Fourier transform

"The Electronic Toolbox. 1"
Anal. Chem. 1985 Volume 57, Issue 11 Pages 1188A-1202A
Raymond E. Dessy

Abstract: A review with 14 references. The application of microelectronics in anal. chemical is discussed. The discussion includes microelectronic sensors and new software tools.
Theory Computer Electronic sensor

"Potentiometric Stripping With Matrix Exchange Techniques In Flow Injection Analysis Of Heavy Metals In Groundwaters"
Anal. Chem. 1983 Volume 55, Issue 2 Pages 320-328
Alex Hu, Raymond E. Dessy, and Anders Graneli

Abstract: Potentiometric stripping analysis, in conjunction with flow injection analysis techniques, provides a convenient automated method for the determination of Cu, Cd, and Pb in groundwater. The theory behind the method is developed, and the hardware, software, and instrumentation required are presented. Application to real groundwater samples provides a comparison with previously described techniques. The separation of nearby oxidation peaks in potentiometric stripping analysis can be effected by matrix exchange techniques which involve plating in one environment and stripping in another. Flow injection analysis provides a convenient mechanism to automate this process. Heavy metals commonly found in groundwater, such as Pb, TI, Cd, Bi, Cu, and Sn, are studied by using this technique to explore the scope and limitations of the method.
Copper Cadmium Metals, heavy Lead Ground Potentiometry Potentiometric stripping analysis Theory

"Continuous-flow Kinetic Techniques In Flow Injection Analysis"
Anal. Chem. 1983 Volume 55, Issue 2 Pages 313-320
David J. Hooley and Raymond E. Dessy

Abstract: Continuous-flow analysis (CFA) is of interest in chemical systems where kinetic methods are applicable. Flow injection analysis (FIA) techniques can provide a convenient reagent conserving mechanism in such a system. A simple, inexpensive multiplier detector head colorimeter system for use in such an analysis is described and tested. The system consists of a pump-free, dual flow-detector/flow-controller transport system coupled to multiple LED/photodiode colorimeter heads. All elements use feedback control for stability and application purposes.
Permanganate Spectrophotometry Kinetic Light emitting diode Photodiode