Chemical and biological characterization of particulate-, semivolatile-, and gas-phase-associated compounds in diluted heavy-duty diesel exhausts: A comparison of three different semivolatile-phase samplers

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00014a018· OSTI ID:5185796

Westerholm, R N; Almen, J; Li, Hang; Rannug, J U ^[1]; Egebaeck, K E; Graegg, K ^[2]

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1. Stockholm Univ. (Sweden)
2. National Environmental Protection Board, Nykoeping (Sweden)

Exhaust emission from a heavy-duty diesel vehicle during transient driving conditions have been characterized chemically and tested for mutagenicity. Both the particulate phase and the semivolatile phase were investigated chemically and by the Ames test. Three different sampling techniques, i.e., cryocondensation and two adsorbents XAD-2 and polyurethane foam (PUF), were used for collection of the semivolatile phase together with a particulate filter situated upstream. The cryogenic technique was the least efficient type and the PUF technique gave the highest recovery of polycyclic aromatic hydrocarbons (PAH) and mutagenic activity. The amount of PAH, mainly three-ringed PAH, emitted in the semivolatile phase was approximately 3 time higher than that emitted in the particulate phase. The contribution of the semivolatile phase to the total mutagenicity was approximately 20% in strain TA100 {plus minus} S9, 10% in strain TA98-S9, and 37% in strain TA98 + S9. The results thus show the importance of both particulate- and semivolatile-phase-associated compounds when possible health effects from diesel engine exhausts are being considered.

• OSTI ID: 5185796
• Journal Information: Environmental Science and Technology; (United States), Vol. 25:2; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
37 INORGANIC
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PHYSICAL AND ANALYTICAL CHEMISTRY
EXHAUST GASES
CHEMICAL ANALYSIS
MUTAGEN SCREENING
DIESEL ENGINES
EXPERIMENTAL DATA
MEASURING METHODS
PARTICULATES
POLYCYCLIC AROMATIC HYDROCARBONS
SAMPLE PREPARATION
AROMATICS
DATA
ENGINES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
INFORMATION
INTERNAL COMBUSTION ENGINES
NUMERICAL DATA
ORGANIC COMPOUNDS
PARTICLES
SCREENING
WASTES
560300* - Chemicals Metabolism & Toxicology
540120 - Environment
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400102 - Chemical & Spectral Procedures