Record Display for the EPA National Library Catalog
RECORD NUMBER: 4 OF 6| Main Title | Kilometer Pathlength Fourier-Transform Infrared System for the Study of Trace Pollutants in Ambient and Synthetic Atmospheres. | |||||||||||
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| Author | Tuazon, E. C. ; Graham, R. A. ; Winer, A. M. ; Easton, R. R. ; Hanst, P. L. ; | |||||||||||
| CORP Author | Environmental Sciences Research Lab., Research Triangle Park, NC. ;California Univ., Riverside. | |||||||||||
| Year Published | 1978 | |||||||||||
| Report Number | EPA/600/J-78/131; | |||||||||||
| Stock Number | PB-299 400 | |||||||||||
| Additional Subjects | Air pollution ; Trace elements ; Infrared spectroscopy ; Smog ; Design ; Field tests ; Concentration(Composition) ; Formaldehyde ; Nitric acid ; Formic acid ; Ammonia ; Ozone ; Test chambers ; Nitrogen organic compounds ; Reprints ; Fourier transform spectroscopy ; Long path optical measurement ; Riverside(California) ; Peroxyacetyl nitrate | |||||||||||
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| Collation | 14p | |||||||||||
| Abstract | A Fourier-transform infrared system, operable at pathlengths up to 2 km, has been constructed for the detection and measurement of trace contaminants in the ambient atmosphere and in controlled smog formation studies. The long optical path is achieved by the use of an eight-mirror multiple reflection cell with a 22.5-m base path. The design, construction, and use of this novel folded-path optical system are described in detail. In preliminary ambient air measurements at Riverside, California, during the period August-October, 1976, ppb concentrations of formaldehyde, nitric acid, formic acid and ammonia (in addition to O3 and PAN) were measured in ambient air. |