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Denuder for measuring emissions of gaseous organic exhaust gas constituents; Denuder zur Emissionsmessung von gasfoermigen organischen Abgasinhaltsstoffen

Abstract

Industrial plants which emit carcinogenic or other noxious substances should be given top priority in any policy to ward off harmful environmental effects. This also applies to many volatile and semi-volatile air constituents such as volatile aliphatic carbonyls or amines. To date there are no satisfactory methods for determining trace organic components of exhaust gases. It is true that aldehydes are considered in the VDI Guideline 3862, but the measuring methods given there are based on absorption in liquids and are accordingly difficult to use and show a high cross-sensitivity for other substances. No VDI Guideline exists to date on amine emissions. In view of the complexity of exhaust gases a selective enrichment of certain families of substances would appear indicated. Sampling trouble could be reduced if it was possible only to accumulate the gaseous phase, or even just one family of gaseous constituents. A particularly suitable air sampling method is that of diffusion separation. These diffusion separators (denuders) are well known as a powerful measuring system which is able to accumulate trace pollutants in the outside air. The purpose of the present study was to find out whether the concept of diffusion separation is also applicable to emission monitoring,  More>>
Publication Date:
May 01, 1997
Product Type:
Technical Report
Report Number:
ETDE-DE-560
Reference Number:
SCA: 540120; PA: DE-97:0GF547; EDB-97:138789; SN: 97001864500
Resource Relation:
Other Information: PBD: May 1997
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION MONITORING; SAMPLERS; FLUE GAS; ALDEHYDES; AMINES; EXPERIMENTAL DATA; PARTICULATES; ABSORPTION; GASES; DIFFUSION; QUANTITATIVE CHEMICAL ANALYSIS; BENCH-SCALE EXPERIMENTS; FIELD TESTS
Sponsoring Organizations:
Bundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)
OSTI ID:
538013
Research Organizations:
TUEV Rheinland Sicherheit und Umweltschutz GmbH, Koeln (Germany). Inst. fuer Umweltschutz und Energietechnik; Technische Univ. Muenchen (Germany). Inst. fuer Wasserchemie und Chemische Balneologie
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE98707078; CNN: Foerderkennzeichen BMBF 01VQ9310; TRN: DE97GF547
Availability:
OSTI as DE98707078
Submitting Site:
DE
Size:
246 p.
Announcement Date:

Citation Formats

Gerchel, B, Jockel, W, Kallinger, G, and Niessner, R. Denuder for measuring emissions of gaseous organic exhaust gas constituents; Denuder zur Emissionsmessung von gasfoermigen organischen Abgasinhaltsstoffen. Germany: N. p., 1997. Web.
Gerchel, B, Jockel, W, Kallinger, G, & Niessner, R. Denuder for measuring emissions of gaseous organic exhaust gas constituents; Denuder zur Emissionsmessung von gasfoermigen organischen Abgasinhaltsstoffen. Germany.
Gerchel, B, Jockel, W, Kallinger, G, and Niessner, R. 1997. "Denuder for measuring emissions of gaseous organic exhaust gas constituents; Denuder zur Emissionsmessung von gasfoermigen organischen Abgasinhaltsstoffen." Germany.
@misc{etde_538013,
title = {Denuder for measuring emissions of gaseous organic exhaust gas constituents; Denuder zur Emissionsmessung von gasfoermigen organischen Abgasinhaltsstoffen}
author = {Gerchel, B, Jockel, W, Kallinger, G, and Niessner, R}
abstractNote = {Industrial plants which emit carcinogenic or other noxious substances should be given top priority in any policy to ward off harmful environmental effects. This also applies to many volatile and semi-volatile air constituents such as volatile aliphatic carbonyls or amines. To date there are no satisfactory methods for determining trace organic components of exhaust gases. It is true that aldehydes are considered in the VDI Guideline 3862, but the measuring methods given there are based on absorption in liquids and are accordingly difficult to use and show a high cross-sensitivity for other substances. No VDI Guideline exists to date on amine emissions. In view of the complexity of exhaust gases a selective enrichment of certain families of substances would appear indicated. Sampling trouble could be reduced if it was possible only to accumulate the gaseous phase, or even just one family of gaseous constituents. A particularly suitable air sampling method is that of diffusion separation. These diffusion separators (denuders) are well known as a powerful measuring system which is able to accumulate trace pollutants in the outside air. The purpose of the present study was to find out whether the concept of diffusion separation is also applicable to emission monitoring, and in particular whether it is suitable for detecting volatile aliphatic aldehydes and amines (primary and secondary) at extremely low concentrations (<10 ppb). (orig./SR) [Deutsch] Fuer Anlagen mit Emissionen von krebserzeugenden und gesundheitsgefaehrdenden Stoffen ergibt sich ein besonderer Handlungsbedarf zum Schutz vor schaedlichen Umwelteinwirkungen. Zu diesen Stoffen gehoeren auch viele leicht- und mittelfluechtigen Luftinhaltsstoffe, wie z.B. die leichtfluechtigen aliphatischen Carbonyle oder Amine. Fuer organische Komponenten, die nur in geringen Konzentrationen im Abgas vorkommen, existieren bisher keine zufriedenstellenden Messverfahren. Fuer die Aldehyde liegt zwar die VDI-Richtlinie 3862 vor, diese Messverfahren beruhen aber auf dem Absorptionsprinzip in Fluessigkeiten, das umstaendlich zu handhaben ist und eine grosse Querempfindlichkeit zu anderen Stoffen besitzt. Fuer die Emissionsmessung von Aminen gibt es derzeit noch keine VDI-Richtlinie. Aufgrund der Komplexitaet des Mediums Abgas ist eine selektive Anreicherung bestimmter Substanzklassen wuenschenswert. So koennen Stoerungen bei der Probenahme verringert werden, indem nur die Gasphase, und hier moeglichst nur eine Substanzklasse, selektiv angereichert wird. Dazu eignet sich besonders die Luftprobenahme auf dem Prinzip der Diffusionsabscheidung. Diese Diffusionsabscheider (Denuder) sind ein bekanntes Messsystem zur nachweisstarken und selektiven Anreicherung von Spurenschadstoffen in der Aussenluft. In diesem Vorhaben soll nun dieses Konzept der Diffusionsabscheidung auf die Anwendbarkeit im Emissionsbereich ueberprueft werden, speziell zur Erfassung der leichtfluechtigen aliphatischen Aldehyde und Amine (primaere und sekundaere) mit extrem niedrigen Nachweisgrenzen (<10 ppb). (orig./SR)}
place = {Germany}
year = {1997}
month = {May}
}