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Table 3 Deposition flux 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 F (μg·m−2·s−1) Jiufeng National Forest Park F (μg·m−2·s− 1)
Daytime (n = 27) Nighttime (n = 18) Daytime (n = 27) Nighttime (n = 18)
Na+ − 0.0214 ± 0.0157 − 0.0016 ± 0.0097 −0.0228 ± 0.0110 − 0.0174 ± 0.0095
NH4+ − 0.0010 ± 0.0370 0.0063 ± 0.0213 −0.0947 ± 0.0735 −0.0221 ± 0.0107
K+ −0.1690 ± 0.2373 0.0115 ± 0.0596 −0.0526 ± 0.0286 −0.0124 ± 0.0097
Mg2+ −0.0170 ± 0.0103 −0.0063 ± 0.0200 −0.0130 ± 0.0120 −0.0084 ± 0.0053
Ca2+ −0.1276 ± 0.0481 −0.0554 ± 0.0438 −0.0766 ± 0.0512 −0.0458 ± 0.0208
Cl −0.0665 ± 0.1329 0.0215 ± 0.0494 −0.0584 ± 0.0210 −0.0152 ± 0.0084
NO3 −0.2984 ± 0.3114 −0.1785 ± 0.1089 −0.7168 ± 0.5892 −0.2010 ± 0.1613
SO42− − 7.2279 ± 5.0425 − 2.2624 ± 2.4174 −9.0948 ± 7.1419 − 2.0206 ± 1.4805
  1. The ranges (± values) correspond to standard deviations