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Open AccessJournal ArticleDOI

On-line computers in classical chemical analyse

M. Bos
- 06 Nov 1980 - 
- Vol. 122, Iss: 2, pp 193-200
TLDR
In chemical analysis, computerization can provide higher precision, higher speed and lower costs and the value of interactive systems in routine work is emphasized.
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This article is published in Analytica Chimica Acta.The article was published on 1980-11-06 and is currently open access. It has received 6 citations till now. The article focuses on the topics: Value (mathematics) & Line (text file).

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Citations
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A GENERALIZED APPROACH FOR THE CALCULATION AND AUTOMATION OF POTENTIOMETRIC TITRATIONS Part 2. Redox Titrations

TL;DR: In this paper, the titration curves of complicated redox systems were calculated using the fast calculation procedure described earlier for calculating the Titration Curve of complicated complex systems and the theory was extended slightly to cover inhomogeneous redox system.
Journal ArticleDOI

Digital techniques in electrochemistry

TL;DR: The recent literature on the application of digital techniques to electrochemical and electrode kinetic studies is reviewed in this article, where the principles of operation of a technical microcomputer are described, and illustrated with examples from electrode kinetic experiments in the field of electrochemical energy conversion.
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Entwicklung eines universellen, preiswerten Interfaces zur Kopplung von Personal Computern mit Analysengeräten

Abstract: This paper presents an expansion of the electronic interface I-O-16 described in some former publications This new system makes it possible to link an experimental set-up for cyclic voltammetry at the interface between two immiscible electrolyte solutions and a personal computer Thus the data recording is managed as well as the generation of the potential scan by the computer A following mathematical treatment allows a numeric correction of the ohmic drop when using a special glass cell for the measurements
References
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An algorithm for the machine calculation of complex Fourier series

TL;DR: Good generalized these methods and gave elegant algorithms for which one class of applications is the calculation of Fourier series, applicable to certain problems in which one must multiply an N-vector by an N X N matrix which can be factored into m sparse matrices.
Journal ArticleDOI

Four levels of pattern recognition

TL;DR: In this paper, the problem of pattern recognition in chemistry and other subjects can be divided conveniently into four different types depending on the level of scope of the problem: (1) classification into one of a number of defined classes.
Frequently Asked Questions (12)
Q1. What are the contributions in this paper?

Motives for computerization, technical possibilities and some human aspects are considered in the following sections. 

several processes recur in a variety of applications: signal averaging, digital filtering, direct digital control, and the display of results. 

Increasing labour costs and decreasing costs of computers and secondary memory now favour the introduction of computers in classical chemical analysis. 

Applications of on-line computers in the laboratory with emphasis on reduction of human labour mostly concern data acquisition, report generation and simple pre-programmed routine control actions. 

Modern high-speed digital hardware enables on-line computers equipped with analog-to-digital converters (ADC) and digital-to-analog converters (DAC) to perform these tasks. 

The first category includes the multiparametric curve-fitting methods; these methods require a theoretical equation relating the measurement variables to a number of parameters that describe the experiment. 

The first application of these pattern recognition methods in classical analysis was reported by Sybrandt and Perone 1251; this concerned the deconvolution of severely overlapping peaks obtained by polarography at a hanging mercury drop electrode. 

It is important to note that although the learning methods require lengthy calculations in training, the final recognition calculations are simple and very fast. 

University courses in analytical chemistry, traditionally of a multidisciplinary character, are best suited to accomplish this integration_ 

there will remain a need for specialized equipment, especially for monitors in industrial processes and environmental control. 

Also pattern recognition types of data processing should find increased application, especially in cases where the relation between the information wanted and the data measured is complex. 

Probably the best known are the control of the electrode potential (or sometimes current) in various electroanalytical methods, and the control of titrant addition (or generation for coulometric titrations) in set-point titrations.