Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric Technique

A microcomputer-based monitoring system for the determination of residual water in organic solvents using ion-selective electrodes in a novel potentiometric method, called the proton iso-concentration technique (PICT), has been developed at UMIST. In the monitor, a sample stream is bled off and mixe...

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Main Authors: T F Hall, R C Waterfall, G J Kakabadse, E O Olatoye, R Perry, A E Tipping
Format: Article
Language:English
Published: SAGE Publishing 1989-10-01
Series:Measurement + Control
Online Access:https://doi.org/10.1177/002029408902200803
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author T F Hall
R C Waterfall
G J Kakabadse
E O Olatoye
R Perry
A E Tipping
author_facet T F Hall
R C Waterfall
G J Kakabadse
E O Olatoye
R Perry
A E Tipping
author_sort T F Hall
collection DOAJ
description A microcomputer-based monitoring system for the determination of residual water in organic solvents using ion-selective electrodes in a novel potentiometric method, called the proton iso-concentration technique (PICT), has been developed at UMIST. In the monitor, a sample stream is bled off and mixed with a buffer solution before passing through a cell containing a pH glass electrode, a reference electrode and an automatic temperature compensation probe. The instrument is calibrated with standard solutions containing water in the same solvent. The automatic monitoring system comprises a microcomputer and slave microprocessor system, the former performing system control and data analysis, the latter controlling a number of discrete electronic devices. Results obtained on selected industrially important solvents demonstrate a satisfactory performance of PICT in continuous monitoring, showing it to be accurate, reproducible and sensitive. On-line determination of moisture in solvents is important for process control in industry.
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spelling doaj.art-6266f1701ec9431cafef8a791f50bfb82022-12-22T03:05:15ZengSAGE PublishingMeasurement + Control0020-29401989-10-012210.1177/002029408902200803Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric TechniqueT F HallR C WaterfallG J KakabadseE O OlatoyeR PerryA E TippingA microcomputer-based monitoring system for the determination of residual water in organic solvents using ion-selective electrodes in a novel potentiometric method, called the proton iso-concentration technique (PICT), has been developed at UMIST. In the monitor, a sample stream is bled off and mixed with a buffer solution before passing through a cell containing a pH glass electrode, a reference electrode and an automatic temperature compensation probe. The instrument is calibrated with standard solutions containing water in the same solvent. The automatic monitoring system comprises a microcomputer and slave microprocessor system, the former performing system control and data analysis, the latter controlling a number of discrete electronic devices. Results obtained on selected industrially important solvents demonstrate a satisfactory performance of PICT in continuous monitoring, showing it to be accurate, reproducible and sensitive. On-line determination of moisture in solvents is important for process control in industry.https://doi.org/10.1177/002029408902200803
spellingShingle T F Hall
R C Waterfall
G J Kakabadse
E O Olatoye
R Perry
A E Tipping
Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric Technique
Measurement + Control
title Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric Technique
title_full Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric Technique
title_fullStr Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric Technique
title_full_unstemmed Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric Technique
title_short Computer-Controlled On-Line Moisture Measurement in Organic Solvents Using a Novel Potentiometric Technique
title_sort computer controlled on line moisture measurement in organic solvents using a novel potentiometric technique
url https://doi.org/10.1177/002029408902200803
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