Chemical Safety Science, 2018, Volume 2, No 2, p. 131 — 138

 

Identification of hazardous substances

UDC 53.082.722                                                                             Download PDF (RUS)

DOI: 10.25514/CHS.2018.2.14110

 

MEASURING HYDRAZINE HYDRATE VAPOR CONCENTRATIONS IN AIR USING MIS-SENSORS

A. A. Mikhailov1*, D. V. Filipchuk1,2, M. O. Etrekova1,2, and A. V. Litvinov2

1OOO NPF “INKRAM”, Moscow, Russia

2National Research Nuclear University “MEPhI” (Moscow Engineering Physics Institute), Moscow, Russia

Received October 16, 2018

Published December 26, 2018

Abstract – Due to the high toxicity of hydrazine hydrate, regular control of its vapor concentration in the air of the working area is required. Measuring the vapor concentrations of hydrazine hydrate can be performed by means of MIS-sensors. The sensitivity of two sensors with MIS-type structures toward vapor concentrations of hydrazine hydrate in the air has been studied. The minimum detectable concentration of hydrazine hydrate using the sensors is found to be 0.005 mg/m3 (in laboratory conditions). A pilot unit of gas analyzer has been developed which is characterized by simple design, reliability, and high sensitivity for hydrazine hydrate vapors.

Keywords: hydrazine, hydrazine hydrate, maximum permissible concentration, MIS-sensor.

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