SEDL / STP / STP786-EB / STP33993S

Determination of Hydrogen Cyanide in Air by Ion Chromatography

Dolzine, TW
U.S. Army Environmental Hygiene Agency, Aberdeen Proving Ground, Md.

Esposito, GG
U.S. Army Environmental Hygiene Agency, Aberdeen Proving Ground, Md.

Gaffney, RJ
U.S. Army Environmental Hygiene Agency, Aberdeen Proving Ground, Md.

Pages: 11    Published: Jan 1982

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Abstract

This paper describes a new procedure for the determination of hydrogen cyanide (HCN) concentrations in air. Airborne HCN is entrained in an impinger containing aqueous alkali and subsequently converted to sodium formate; the latter is quantitatively measured by ion chromatography. The collection procedure, reaction conditions, and chromatographic method are described. Interferences and the use of ion exchange resins for sample clean-up were investigated also. The precision and accuracy of spiked and air samples are presented.