Chemiluminescence measurement of reactivity weighted ethylene-equivalent hydrocarbons
| Autor: | Arthur Fontijn, Larry E. High, Frank Black |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
chemistry.chemical_classification
Ethylene Quenching (fluorescence) Analytical chemistry chemistry.chemical_element General Chemistry Oxygen law.invention chemistry.chemical_compound Hydrocarbon chemistry law Environmental Chemistry Organic chemistry Reactivity (chemistry) Gas chromatography Luminescence Chemiluminescence |
| Zdroj: | Environmental Science & Technology. 11:597-601 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es60129a006 |
| Popis: | A reactive hydrocarbon analyzer (RHA), based on the chemiluminescent reaction of hydrocarbons with oxygen atoms, is used to provide a rapid indication of reactivity weighted hydrocarbon mass in automobile exhaust. Samples are reported by their ethylene-equivalent concentration--the concentration of ethylene which would give the same mass-reactivity product as the exhaust hydrocarbon mixture. These are compared to ethylene-equivalent concentrations obtained by the much more cumbersome procedure of weighting the individual sample hydrocarbons, determined by gas chromatography (GC), by their respective relative short-term photochemical reactivities, summing these results, and equating them to ethylene. Procedures are also described to eliminate a negative interference to the RHA method resultant from H2O quenching of the chemiluminescence emitter. The RHA and GC ethylene-equivalent concentrations correlate within 5%. (Copyright (c) 1977 by the American Chemical Society.) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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