An evaluation of uncertainty associated to analytical measurements of selected polycyclic aromatic compounds in ambient air

作者：Isabel Barrado Olmedo Ana; Maria Perez Pastor Rosa; Garcia Alonso Susana^*

来源：Talanta, 2012, 101: 428-434.

DOI：10.1016/j.talanta.2012.09.053

• PAHs
• Hydroxy-PAHs
• Nitro-PAHs
• HPLC
• Fluorescence
• Ambient air

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 PM10. PM2.5 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 PM10/PM2.5 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.

• 出版日期2012-11-15