DOI: 10.14489/td.2018.03.pp.048-051

Zubkov I. L., Peskov N. P.
OPTICAL CHEMICAL SENSOR FOR CONTROL OF THE CONCENTRATION OF DIETHANOLAMINE
(pp. 48-51)

Abstract. The problem of automated control of diethanolamine concentration in the process of rectification of a binary mixture of di- and triethanolamine is considered in order to ensure the high quality of the products obtained. To ensure the specified clarity of separation of the binary mixture of ethanolamines into constituent components, it is necessary to correct the parameters of the operation of the rectification system control system depending on the composition of the initial mixture (the content of diethanolamine in the binary mixture) determined by the course of the previous process. This is the most severe disturbing effect. For direct quantitative determination of diethanolamine in a binary mixture in the gas phase, an optical method of analysis is recommended.The possibility of using an optical chemical sensor coated on it in the form of functional polymer D-924-St, which is acridine dye immobilized on sodium polystyrene sulfonate, is considered to determine the concentration of diethanolamine in order to expand the automation of production processes. The quantitative analysis is carried out by the calibration graph method. The optimal characteristics and operating conditions of the sensor are determined.

Keywords: optical chemical sensor, diethanolamine, binary mixture.