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Volatilization and oxidative artifacts of PM bound PAHs collected at low volume sampling (1): Laboratory and field evaluation
- Source :
- Chemosphere 200 (2018): 106–115. doi:10.1016/j.chemosphere.2018.02.090, info:cnr-pdr/source/autori:Balducci, Catia; Cecinato, Angelo; Paolini, Valerio; Guerriero, Ettore; Perilli, Mattia; Romagnoli, Paola; Tortorella, Carmela; Iacobellis, Silvana; Giove, Aldo; Febo, Antonio/titolo:Volatilization and oxidative artifacts of PM bound PAHs collected at low volume sampling (1): Laboratory and field evaluation/doi:10.1016%2Fj.chemosphere.2018.02.090/rivista:Chemosphere/anno:2018/pagina_da:106/pagina_a:115/intervallo_pagine:106–115/volume:200
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Laboratory and field studies were carried out to assess the effects of oxidative degradation and volatilization on PM10 bound polycyclic aromatic hydrocarbons (PAHs), collected at low volume condition according to the EU sampling reference method EN12341:2014 (flow rate 2.3 m(3) h(-1)), on 47 mm quartz filters. For the laboratory experiments, pairs of twin samples were collected in field and, after treatments favoring decomposition or/and volatilization of PAHs on one sample, the PAH amount was compared with that of the corresponding untreated sample. Ozone exposure caused a general PAHs decay with more marked effects on benzo [a]pyrene, perylene and benz [a]anthracene; these compounds showed, similarly to benzo [ghi]perylene, correlations between ozone dose and losses. Treatments with zero air exhibited losses due to volatilization even for 5-ring PAHs up to benzo [a]pyrene, whereas a linear dependence was observed between filter PAH load and losses for benzo [a]anthracene, chrysene and benzofluoranthenes. Concentrations on samples collected simultaneously over 48, 24, 12 and 6 h were compared. Results confirmed a lack of temporal auto-consistency in the PAHs sampling methodology here adopted. In particular higher atmospheric PAH concentrations were ascertained on samples constituted by cumulative filters exposed over shorter sampling times. When 24 h and 2 x 12-h samples were compared, comparable losses were evaluated in the hot and cold seasons. This finding shows that, although in summer meteorology conditions favor sampling artifacts, the effectiveness of these phenomena continue in the winter, probably due to the larger amount of PAH available on the sampling filter (total PAHs similar to 10 vs 0.5 ng m(-3)). (C) 2018 Elsevier Ltd. All rights reserved.
- Subjects :
- Chrysene
Environmental Engineering
Ozone
010504 meteorology & atmospheric sciences
Health, Toxicology and Mutagenesis
010501 environmental sciences
01 natural sciences
Specimen Handling
chemistry.chemical_compound
PAHs
Air Pollution
polycyclic compounds
Environmental Chemistry
Polycyclic Aromatic Hydrocarbons
0105 earth and related environmental sciences
Atmospheric PM
Air Pollutants
Anthracene
Volatilisation
Public Health, Environmental and Occupational Health
Oxidative degradation
Sampling (statistics)
General Medicine
General Chemistry
EU sampling reference method
Pollution
Decomposition
Oxidative Stress
chemistry
Environmental chemistry
Pyrene
Particulate Matter
Volatilization
Artifacts
Laboratories
Perylene
Environmental Monitoring
Subjects
Details
- ISSN :
- 00456535
- Volume :
- 200
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....da40dd7f4d9a7c620f82716374dc48b1