Table 4 Spearman correlation coefficients between the DTT activity (nmol/(min m3) air) and mass concentration (μg/m3) of different chemical species.

From: The Impact of Russia-Ukraine geopolitical conflict on the air quality and toxicological properties of ambient PM2.5 in Milan, Italy

Species

DTT activity

Species

DTT activity

R

P-value

R

P-value

PAHs

0.88

0.01

Li

0.14

0.78

Levoglucosan

0.77

0.05

Cr

0.42

0.39

EC

0.82

0.03

Mn

0.20

0.70

OC

0.71

0.10

Ni

0.42

0.39

K

0.94

0.004

Cu

0.48

0.32

As

0.82

0.03

Zn

0.25

0.62

Cd

0.77

0.05

Ba

0.60

0.20

Pb

0.60

0.20

NH4+

− 0.31

0.54

V

− 0.65

0.15

SO42−

− 0.37

0.46

Fe

0.20

0.70

NO3−

0.25

0.62

  1. Values in Bold indicate statistically significant correlations.
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