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An evaluation of uncertainty associated to analytical measurements of selected polycyclic aromatic compounds in ambient air.
- Source :
-
Talanta [Talanta] 2012 Nov 15; Vol. 101, pp. 428-34. Date of Electronic Publication: 2012 Sep 29. - Publication Year :
- 2012
-
Abstract
- This paper presents an evaluation of uncertainty associated to analytical measurement of 18 polycyclic aromatic compounds (PACs) in ambient air by liquid chromatography with fluorescence detection (HPLC/FD). The study was focused on analyses of PM(10), PM(2.5) and gas phase fractions. Main analytical uncertainty was estimated for 11 polycyclic aromatic hydrocarbons (PAHs), four nitro-polycyclic aromatic hydrocarbons (nitro-PAHs) and two hydroxy-polycyclic aromatic hydrocarbons (OH-PAHs) based on the analytical determination, reference material analysis and extraction step. Main contributions reached 15-30% and came from extraction process of real ambient samples, being those for nitro-PAHs the highest (20-30%). Range and mean concentration of selected PACs measured in gas phase and PM(10)/PM(2.5) particle fractions during a full year are also presented. Concentrations of OH-PAHs were about 2-4 orders of magnitude lower than their parent PAHs and comparable to those sparsely reported in literature.<br /> (Copyright © 2012 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-3573
- Volume :
- 101
- Database :
- MEDLINE
- Journal :
- Talanta
- Publication Type :
- Academic Journal
- Accession number :
- 23158344
- Full Text :
- https://doi.org/10.1016/j.talanta.2012.09.053