The Determination of Microgram Quantities of Monoethanol Amine and Ammonia in Air.
Abstract
A method for the simultaneous determination of ppm concentrations of ammonia and monoethanol amine (MEA) vapors in air has been developed. The reacting agent, diketohydrindene hydrate (ninhydrin), is supported silica gel in a glass tube which also contains an ortho boric acid 'filter' section. Equal quantities of contaminated air are passed through the tube in each direction. If NH3 and/or MEA are present a blue color will develop when the tube is heated to 95-100C for two minutes following exposure. The length of the color band is proportional to the amount of contamination in the sampled air. The boric acid section of the tube removes MEA only from the stream. Hence, the color band at the filtered end of the tube represents NH3 only, and the band at the unfiltered end represents total NH3-MEA. Through appropriate calibration, MEA is determined by difference. Calibrating data are presented, as are recommended operating procedures. A versatile sampling device is also described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1959
- Accession Number
- AD0770117
Entities
People
- D. D. Williams
- S. H. Smith Jr.
Organizations
- United States Naval Research Laboratory