Table 1 Correlation* between EBC levels of the different anions with MDA, metals and sub-micrometer particles
From: Malondialdehyde and anion patterns in exhaled breath condensate among subway workers
|  | Formate (µmol/L) | Acetate (µmol/L) | Lactate (µmol/L) | ΣNOx (µmol/L) | NO2−/NO3− |
|---|---|---|---|---|---|
MDA (ng/L) | 0.53 (0.001) | 0.29 (0.001) | 0.12 (0.169) | 0.06 (0.468) | 0.29 (0.001) |
Cu (µg/L) | 0.05 (0.58) | − 0.21 (0.019) | 0.47 (0.001) | 0.07 (0.431) |  − 0.23 (0.009) |
Mn (µg/L) | 0.11 (0.22) | − 0.19 (0.033) | 0.18 (0.048) | 0.14 (0.107) |  − 0.14 (0.118) |
Cr (µg/L) | 0.14 (0.134) | − 0.22 (0.018) | 0.21 (0.022) | 0.004 (0.970) |  − 0.15 (0.100) |
Ni (µg/L) | 0.03 (0.973) | − 0.07 (0.463) | 0.36 (0.001) | 0.004 (0.968) |  − 0.13 (0.150) |
Zn (µg/L) | 0.24 (0.008) | − 0.14 (0.128) | 0.23 (0.010) | 0.18 (0.046) |  − 0.18 (0.044) |
Number concentration (NTA) (#/cm3) | − 0.01 (0.945) | − 0.10 (0.241) | 0.32 (0.001) | − 0.16 (0.083) | 0.03 (0.765) |
Mean hydrodynamic size (NTA) (nm) | − 0.01 (0.903) | − 0.03 (0.724) | 0.19 (0.038) | − 0.13 (0.144) | 0.10 (0.267) |