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- W2265919120 abstract "Ion chromatography is a technique for analysis of ionic species in solution. To date, the technique has not been reported as an on-line process control method. Current methods of process control of aqueous systems may be by off-line analysis, online monitoring of bulk properties, or on-line monitoring of an individual species. Ion chromatography has potential in process control because it is capable of analyzing mixtures of ionic species and hence providing increased specificity of information. A brief review of present ion chromatography systems will be presented, with a discussion of each system's merits in process control applications. Single column ion chromatography combined with indirect photometric detection appears to offer the optimum combination of simplicity, sensitivity and reliability for most on-line situations. Examples of the potential use of ion chromatography in process control include phosphating systems and chromate passivation systems. Cooling systems, boiler feed water and effluent discharges are also candidates for monitoring control by ion chromatography. Essential components of an ion chromatography system are the eluent, eluent pump, injector, sample, column, detector and recorder. Each component will be discussed in terms of its contribution to the overall reliability of an on-line system with respect to maintenance requirements. Improved manual process control using ion chromatography may be achieved in a monitoring mode, maintaining reactive species within specified limits. In a feed-back mode, a process would be automatically controlled by dosing of individual reactants and blowdown of contaminants." @default.
- W2265919120 created "2016-06-24" @default.
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- W2265919120 date "1984-01-01" @default.
- W2265919120 modified "2023-09-23" @default.
- W2265919120 title "Potetitial applications of ion chromatography in process control" @default.
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