Skip to main content

Table 5 Deposition velocities of water-soluble inorganic ions during the daytime and night at the Olympic Forest Park and Jiufeng National Forest Park

From: Deposition of water-soluble inorganic ions in PM2.5 in a typical forestry system in Beijing, China

Ions Olympic Forest Park Vd (cm·s− 1) Jiufeng National Forest Park Vd (cm·s− 1)
Daytime (n = 27) Nighttime (n = 18) Vd (day)/Vd (night) Daytime (n = 27) Nighttime (n = 18) Vd (day)/Vd (night)
Na+ 0.38 ± 0.40 0.14 ± 0.30 2.68 1.11 ± 0.31 0.61 ± 0.20 1.81
NH4+ −0.13 ± 0.30 −0.01 ± 0.09 13.00 0.67 ± 0.32 0.25 ± 0.12 2.65
K+ 0.59 ± 0.69 0.04 ± 0.42 14.65 1.34 ± 0.48 0.51 ± 0.35 2.64
Mg2+ 0.45 ± 0.24 0.19 ± 0.20 2.35 1.23 ± 0.29 0.79 ± 0.38 1.56
Ca2+ 1.14 ± 0.33 0.40 ± 0.32 2.83 1.31 ± 0.95 0.80 ± 0.52 1.63
Cl 0.05 ± 0.16 −0.12 ± 0.86 −0.40 0.66 ± 0.22 0.27 ± 0.13 2.48
NO3 0.29 ± 0.12 0.15 ± 0.11 1.92 0.45 ± 0.41 0.24 ± 0.18 1.92
SO42− 1.21 ± 0.24 0.33 ± 0.42 3.71 1.89 ± 0.58 0.84 ± 0.17 2.25
  1. The ranges (± values) correspond to standard deviations