A549	Human lung adenocarcinoma epithelial cell line A549
CAA	Cellular Antioxidant Activity
CV	Coefficient of variation
DCFH-DA	2′,7′-Dichlorodihydrofluorescein diacetate
DEM	Demokritos Atmospheric Aerosol Measurement station
DNA	Deoxyribonucleic acid
EC	Elemental carbon
ED-XRF	Energy-dispersive X-ray fluorescence
EDTA	Ethylenediaminetetraacetic acid
EUSAAR2	European Supersites for Atmospheric Aerosol Research, protocol 2
FU	Fluorescence unit(s)
(HAC)2	Helmos Hellenic Atmospheric Aerosols and Climate Change Station
NCSRD	National Centre for Scientific Research “Demokritos”
NIST	National Institute of Standards and Technology
NR8383	Rat alveolar macrophage cell line NR8383
OC	Organic carbon
OC/EC	Organic-carbon-to-elemental-carbon ratio
OP	Oxidative Potential
PBS	Phosphate-buffered saline
PM	Particulate matter
PM2.5	Particulate matter with an aerodynamic diameter of 2.5 μm or less
PM10	Particulate matter with an aerodynamic diameter of 10 μm or less
POS	Positive control
PT	Positive control
PTFE	Polytetrafluoroethylene
ROS	Reactive oxygen species
SD	Standard deviation
SGM	Salt–glucose medium
SNR	Signal-to-noise ratio
SRM	Standard Reference Material
UT	Untreated control
WHO	World Health Organization
XRF	X-ray fluorescence
Zym	Zymosan