Application of impregnated filters to determination of smoke and ammonia
- 1 July 1987
- journal article
- research article
- Published by Springer Nature in Environmental Monitoring and Assessment
- Vol. 9 (1) , 101-104
- https://doi.org/10.1007/bf00394220
Abstract
Whatman No. 1 filters impregnated with a 3% solution of oxalic acid in ethanol which are used for elimination of ammonia from the air stream before entering the absorber for collecting SO2, were tested for a possible application (a) in the spectrophotometric determination of ammonia with Nessler's reagent and (b) in the reflectometric determination of smoke. It was shown that impregnated filters were as suitable for the determination of ammonia as absorbing solution and as applicable for smoke measurement as untreated filters. Further, the advantage of using impregnated filters for sampling ammonia lies in avoiding the interference of organic vapours which may occur, if absorbing solution is used.This publication has 2 references indexed in Scilit:
- Elimination of ammonia interference in acidimetric determination of sulphur dioxideEnvironmental Monitoring and Assessment, 1982
- Microdetermination of ammonia by the ring oven technique and its application to air pollution studiesAtmospheric Environment (1967), 1975