Table 1 Cd, As, Hg, Ni and Pb contents and the physical and chemical properties of bus stop dusts from Qingyang.
From: Physicochemical properties and toxic elements in bus stop dusts from Qingyang, NW China
SN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
pH | 8.1 | 8.3 | 8.0 | 8.6 | 8.0 | 12.0 | 11.1 | 10.8 | 10.4 | 10.1 | 9.9 | 9.8 | 9.8 | 9.4 | 6.8 | 7.5 | 8.2 | 8.5 | 8.4 | 7.4 | 9.0 | 8.0 | 8.5 | 8.8 | 9.0 | 9.1 | 9.1 |
OM (%) | 18.7 | 6.9 | 9.9 | 10.3 | 15.9 | 4.8 | 12.0 | 12.3 | 15.8 | 10.0 | 2.8 | 6.9 | 11.8 | 8.0 | 8.5 | 10.5 | 7.3 | 11.5 | 12.9 | 9.9 | 9.9 | 17.4 | 15.0 | 13.7 | 7.0 | 18.8 | 8.7 |
PM < 2.5 (%) | 9.8 | 6.3 | 6.7 | 11.2 | 9.7 | 4.1 | 3.9 | 3.4 | 10.3 | 4.1 | 2.1 | 2.1 | 2.9 | 9.5 | 5.8 | 6.1 | 6.7 | 7.0 | 2.7 | 3.5 | 4.5 | 5.5 | 4.0 | 2.9 | 8.7 | 6.5 | 7.5 |
2.5 < PM < 10 (%) | 26.3 | 23.1 | 20.3 | 35.8 | 14.0 | 7.7 | 13.1 | 12.1 | 23.2 | 10.5 | 6.9 | 5.0 | 8.9 | 31.0 | 20.6 | 17.2 | 14.0 | 18.0 | 18.0 | 12.0 | 18.7 | 11.0 | 19.1 | 22.3 | 24.0 | 25.0 | 22.0 |
10 < PM < 50 (%) | 56.4 | 52.3 | 58.4 | 46.5 | 39.5 | 28.4 | 42.7 | 36.2 | 53.7 | 32.0 | 28.6 | 34.6 | 38.3 | 47.6 | 58.7 | 43.6 | 43.0 | 42.2 | 34.0 | 35.0 | 37.0 | 38.0 | 42.0 | 41.0 | 40.0 | 42.5 | 41.5 |
PM > 50 (%) | 7.6 | 18.3 | 14.6 | 6.5 | 36.9 | 59.8 | 40.4 | 48.2 | 12.8 | 53.4 | 62.4 | 58.3 | 49.9 | 11.9 | 14.9 | 33.1 | 36.3 | 32.9 | 45.4 | 49.6 | 39.8 | 45.5 | 34.9 | 33.8 | 27.4 | 26.0 | 29.0 |
χLF (10−8 m3 kg−1) | 201.9 | 197.0 | 116.7 | 521.7 | 198.9 | 347.2 | 269.7 | 180.1 | 279.4 | 51.9 | 138.1 | 191.4 | 222.4 | 141.2 | 208.7 | 150.6 | 236.0 | 145.3 | 122.9 | 234.4 | 162.4 | 201.8 | 273.0 | 131.1 | 203.1 | 173.8 | 174.3 |
χHF (10−8 m3 kg−1) | 199.1 | 183.8 | 107.7 | 516.3 | 192.7 | 340.0 | 266.1 | 172.1 | 276.9 | 48.9 | 135.9 | 186.7 | 215.7 | 138.6 | 180.5 | 139.0 | 234.4 | 142.1 | 117.4 | 233.3 | 160.0 | 186.4 | 272.3 | 128.6 | 191.1 | 170.7 | 174.2 |
χFD (%) | 1.4 | 6.7 | 7.7 | 1.0 | 3.1 | 2.1 | 1.3 | 4.4 | 0.9 | 5.8 | 1.6 | 2.5 | 3.0 | 1.8 | 13.5 | 7.7 | 0.7 | 2.2 | 4.5 | 0.5 | 1.5 | 7.6 | 0.3 | 1.9 | 5.9 | 1.8 | 0.1 |
Hg (µg kg−1) | 116.4 | 243.4 | 194.6 | 35.8 | 71.3 | 217.0 | 33.3 | 466.5 | 326.6 | 139.3 | 116.1 | 240.4 | 361.7 | 108.2 | 514.6 | 1357.7 | 218.0 | 75.0 | 149.5 | 164.3 | 189.1 | 223.5 | 134.0 | 90.0 | 906.0 | 235.4 | 88.3 |
As (mg kg−1) | 11.8 | 11.9 | 12.5 | 9.2 | 11.1 | 11.0 | 8.8 | 9.8 | 10.4 | 9.6 | 8.7 | 9.1 | 10.5 | 11.1 | 8.8 | 10.3 | 16.3 | 8.5 | 13.7 | 11.1 | 9.1 | 9.4 | 9.8 | 9.1 | 8.7 | 9.5 | 8.9 |
Cd (mg kg−1) | 1.8 | 3.1 | 1.5 | 1.0 | 1.1 | 1.0 | 1.0 | 0.9 | 1.8 | 1.2 | 0.7 | 0.9 | 1.0 | 1.7 | 1.4 | 2.3 | 1.6 | 0.7 | 1.5 | 1.3 | 1.9 | 1.7 | 0.8 | 0.8 | 0.9 | 0.8 | 1.2 |
Ni (mg kg−1) | 20.9 | 23.3 | 22.8 | 18.9 | 20.4 | 18.6 | 15.6 | 25.2 | 31.0 | 17.4 | 16.5 | 19.9 | 21.4 | 28.2 | 151.3 | 24.2 | 17.0 | 15.3 | 21.8 | 20.5 | 21.4 | 17.7 | 16.4 | 18.2 | 15.1 | 16.2 | 17.1 |
Pb (mg kg−1) | 73.8 | 62.3 | 46.4 | 65.3 | 44.1 | 32.6 | 31.3 | 33.5 | 34.2 | 40.9 | 38.3 | 34.2 | 39.7 | 47.5 | 40.8 | 40.5 | 49.1 | 36.1 | 53.0 | 60.2 | 52.7 | 37.8 | 32.5 | 36.1 | 32.3 | 56.5 | 36.0 |
Hg Igeo | 2.3 | 3.3 | 3.0 | 0.6 | 1.6 | 3.2 | 0.5 | 4.3 | 3.8 | 2.5 | 2.3 | 3.3 | 3.9 | 2.2 | 4.4 | 5.8 | 3.2 | 1.6 | 2.6 | 2.8 | 3.0 | 3.2 | 2.5 | 1.9 | 5.2 | 3.3 | 1.9 |
Hg PI | 5.8 | 12.2 | 9.7 | 1.8 | 3.6 | 10.9 | 1.7 | 23.3 | 16.3 | 7.0 | 5.8 | 12.0 | 18.1 | 5.4 | 25.7 | 67.9 | 10.9 | 3.7 | 7.5 | 8.2 | 9.5 | 11.2 | 6.7 | 4.5 | 45.3 | 11.8 | 4.4 |
As Igeo | −0.6 | −0.6 | −0.5 | −1.0 | −0.7 | −0.7 | −1.1 | −0.9 | −0.8 | −0.9 | −1.1 | −1.0 | −0.8 | −0.7 | −1.1 | −0.8 | −0.2 | −1.1 | −0.4 | −0.7 | −1.0 | −1.0 | −0.9 | −1.0 | −1.1 | −0.9 | −1.0 |
As PI | 1.0 | 1.0 | 1.0 | 0.8 | 0.9 | 0.9 | 0.7 | 0.8 | 0.9 | 0.8 | 0.7 | 0.7 | 0.9 | 0.9 | 0.7 | 0.8 | 1.3 | 0.7 | 1.1 | 0.9 | 0.7 | 0.8 | 0.8 | 0.7 | 0.7 | 0.8 | 0.7 |
Cd Igeo | 3.4 | 4.2 | 3.2 | 2.5 | 2.8 | 2.5 | 2.6 | 2.4 | 3.4 | 2.8 | 2.1 | 2.4 | 2.6 | 3.3 | 3.1 | 3.7 | 3.2 | 2.1 | 3.1 | 2.9 | 3.5 | 3.4 | 2.2 | 2.2 | 2.4 | 2.3 | 2.8 |
Cd PI | 31.3 | 38.1 | 28.8 | 22.8 | 25.2 | 22.9 | 23.2 | 22.2 | 31.3 | 25.5 | 18.9 | 21.8 | 23.2 | 30.4 | 27.8 | 34.0 | 29.2 | 19.5 | 28.4 | 26.8 | 31.7 | 30.7 | 20.1 | 20.4 | 21.4 | 21.2 | 25.7 |
Ni Igeo | −1.3 | −1.2 | −1.2 | −1.5 | −1.4 | −1.5 | −1.8 | −1.1 | −0.8 | −1.6 | −1.7 | −1.4 | −1.3 | −0.9 | 1.5 | −1.1 | −1.6 | −1.8 | −1.3 | −1.4 | −1.3 | −1.6 | −1.7 | −1.5 | −1.8 | −1.7 | −1.6 |
Ni PI | 0.6 | 0.7 | 0.6 | 0.5 | 0.6 | 0.5 | 0.4 | 0.7 | 0.9 | 0.5 | 0.5 | 0.6 | 0.6 | 0.8 | 4.3 | 0.7 | 0.5 | 0.4 | 0.6 | 0.6 | 0.6 | 0.5 | 0.5 | 0.5 | 0.4 | 0.5 | 0.5 |
Pb Igeo | 1.4 | 1.1 | 0.7 | 1.2 | 0.6 | 0.2 | 0.2 | 0.2 | 0.3 | 0.5 | 0.4 | 0.3 | 0.5 | 0.8 | 0.5 | 0.5 | 0.8 | 0.4 | 0.9 | 1.1 | 0.9 | 0.4 | 0.2 | 0.4 | 0.2 | 1.0 | 0.4 |
Pb PI | 3.9 | 3.3 | 2.5 | 3.5 | 2.3 | 1.7 | 1.7 | 1.8 | 1.8 | 2.2 | 2.0 | 1.8 | 2.1 | 2.5 | 2.2 | 2.2 | 2.6 | 1.9 | 2.8 | 3.2 | 2.8 | 2.0 | 1.7 | 1.9 | 1.7 | 3.0 | 1.9 |
SN | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | GS 43 |
pH | 9.2 | 8.9 | 8.8 | 9.1 | 8.4 | 8.6 | 9.3 | 9.1 | 8.9 | 9.6 | 9.4 | 9.5 | 8.7 | 8.8 | 8.5 | 8.7 | 9.7 | 8.6 | 8.6 | 9.4 | 8.8 | 9.1 | 8.8 | 8.7 | 9.6 | 8.8 | 8.5 |
OM (%) | 16.3 | 5.0 | 8.4 | 9.5 | 7.5 | 9.9 | 15.3 | 8.7 | 6.8 | 16.5 | 17.7 | 7.8 | 17.8 | 11.9 | 12.9 | 7.4 | 15.5 | 8.9 | 17.5 | 9.4 | 11.5 | 16.8 | 12.7 | 16.3 | 5.8 | 17.5 | 2.7 |
PM < 2.5 (%) | 7.0 | 7.6 | 5.5 | 10.6 | 9.7 | 6.2 | 3.5 | 8.4 | 6.7 | 5.5 | 7.4 | 5.5 | 8.7 | 6.3 | 4.4 | 5.8 | 4.6 | 5.3 | 11.3 | 7.0 | 7.3 | 5.4 | 3.3 | 2.8 | 3.5 | 4.9 | # |
2.5 < PM < 10 (%) | 18.0 | 17.0 | 16.0 | 15.0 | 14.0 | 15.0 | 16.0 | 11.0 | 14.0 | 17.0 | 18.0 | 9.0 | 13.0 | 14.0 | 12.0 | 15.0 | 29.0 | 15.0 | 27.0 | 11.0 | 25.0 | 24.0 | 33.0 | 28.0 | 32.0 | 17.0 | # |
10 < PM < 50 (%) | 42.2 | 35.5 | 36.9 | 38.5 | 39.5 | 41.3 | 42.6 | 45.6 | 43.0 | 31.9 | 36.8 | 43.9 | 40.7 | 35.1 | 52.0 | 54.0 | 50.0 | 35.0 | 34.0 | 25.0 | 24.0 | 28.0 | 29.0 | 8.0 | 17.0 | 18.0 | # |
PM > 50 (%) | 32.9 | 39.9 | 41.6 | 35.9 | 36.9 | 37.4 | 37.9 | 35.0 | 36.3 | 45.6 | 37.8 | 41.7 | 37.6 | 44.6 | 31.7 | 25.3 | 16.4 | 44.7 | 27.7 | 57.1 | 43.8 | 42.6 | 34.7 | 61.2 | 47.5 | 60.1 | # |
χLF (10−8 m3 kg−1) | 108.7 | 209.1 | 207.4 | 159.6 | 135.6 | 138.4 | 196.1 | 252.7 | 392.8 | 144.9 | 186.9 | 165.7 | 156.6 | 178.8 | 792.4 | 286.0 | 284.3 | 344.3 | 230.1 | 164.8 | 274.5 | 195.9 | 179.5 | 220.1 | 199.3 | 170.7 | # |
χHF (10−8 m3 kg−1) | 105.7 | 190.6 | 205.2 | 156.8 | 133.0 | 136.9 | 192.2 | 247.4 | 368.9 | 136.6 | 178.4 | 162.2 | 151.5 | 178.2 | 770.9 | 284.7 | 282.0 | 340.6 | 229.0 | 157.7 | 269.4 | 187.7 | 176.3 | 201.0 | 198.0 | 167.8 | # |
χFD (%) | 2.8 | 8.8 | 1.1 | 1.8 | 1.9 | 1.1 | 2.0 | 2.1 | 6.1 | 5.7 | 4.5 | 2.1 | 3.3 | 0.3 | 2.7 | 0.5 | 0.8 | 1.1 | 0.5 | 4.3 | 1.9 | 4.2 | 1.8 | 8.7 | 0.7 | 1.7 | # |
Hg (µg kg−1) | 31.6 | 57.2 | 445.3 | 138.9 | 894.2 | 85.2 | 176.8 | 70.1 | 87.3 | 175.5 | 66.0 | 47.9 | 99.7 | 28.5 | 675.9 | 110.5 | 5.1 | 443.5 | 8.0 | 19.3 | 233.7 | 4.5 | 117.1 | 42.2 | 203.0 | 36.3 | 20.0 |
As (mg kg−1) | 10.6 | 11.3 | 9.4 | 11.9 | 10.3 | 9.0 | 8.2 | 10 | 12.3 | 11.9 | 9.7 | 8.3 | 7.1 | 9.6 | 13.2 | 9.1 | 10.2 | 10 | 8.2 | 9.9 | 10.1 | 9.6 | 8.7 | 8.6 | 9.4 | 9.5 | 12.6 |
Cd (mg kg−1) | 0.9 | 0.9 | 1.0 | 1.0 | 0.8 | 0.8 | 1.3 | 0.4 | 1.3 | 1.4 | 0.9 | 1.0 | 1.2 | 1.0 | 2.2 | 1.3 | 1.0 | 2.0 | 0.7 | 1.1 | 1.5 | 1.3 | 1.9 | 0.9 | 1.5 | 0.6 | 0.1 |
Ni (mg kg−1) | 18.0 | 19.8 | 15.5 | 18.6 | 16.5 | 20.9 | 14.8 | 18.9 | 32.2 | 28.8 | 15.5 | 17.4 | 13.5 | 19.0 | 19.5 | 17.1 | 17.9 | 51.3 | 12.7 | 19.1 | 17.9 | 16.9 | 15.3 | 14.6 | 19.4 | 12.7 | 35.2 |
Pb (mg kg−1) | 33.7 | 31.5 | 38.4 | 39.7 | 32.8 | 43.9 | 43.6 | 30.8 | 95.4 | 96.2 | 34.8 | 35.3 | 39.9 | 39.8 | 76.3 | 71.9 | 34.4 | 62.6 | 34.4 | 43.8 | 45.3 | 49.3 | 37.9 | 33.8 | 46.7 | 20.1 | 18.8 |
Hg Igeo | 0.4 | 1.3 | 4.2 | 2.5 | 5.2 | 1.8 | 2.9 | 1.5 | 1.9 | 2.9 | 1.5 | 1.0 | 2.1 | 0.3 | 4.8 | 2.2 | −2.2 | 4.2 | −1.6 | −0.3 | 3.3 | −2.4 | 2.3 | 0.8 | 3.1 | 0.6 | −0.3 |
Hg PI | 1.6 | 2.9 | 22.3 | 6.9 | 44.7 | 4.3 | 8.8 | 3.5 | 4.4 | 8.8 | 3.3 | 2.4 | 5.0 | 1.4 | 33.8 | 5.5 | 0.3 | 22.2 | 0.4 | 1.0 | 11.7 | 0.2 | 5.9 | 2.1 | 10.2 | 1.8 | 1 |
As Igeo | −0.8 | −0.7 | −1.0 | −0.6 | −0.8 | −1.0 | −1.2 | −0.9 | −0.6 | −0.6 | −0.9 | −1.1 | −1.4 | −0.9 | −0.5 | −1.0 | −0.8 | −0.9 | −1.2 | −0.9 | −0.9 | −0.9 | −1.1 | −1.1 | −1.0 | −0.9 | −0.6 |
As PI | 0.9 | 0.9 | 0.8 | 1.0 | 0.8 | 0.7 | 0.7 | 0.8 | 1.0 | 1.0 | 0.8 | 0.7 | 0.6 | 0.8 | 1.1 | 0.7 | 0.8 | 0.8 | 0.7 | 0.8 | 0.8 | 0.8 | 0.7 | 0.7 | 0.8 | 0.8 | 1.0 |
Cd Igeo | 2.4 | 2.4 | 2.5 | 2.5 | 2.2 | 2.2 | 2.9 | 1.3 | 3.0 | 3.0 | 2.5 | 2.5 | 2.8 | 2.5 | 3.7 | 2.9 | 2.6 | 3.5 | 2.1 | 2.7 | 3.2 | 3.0 | 3.5 | 2.5 | 3.2 | 1.8 | −0.6 |
Cd PI | 22.1 | 21.7 | 23.1 | 23.1 | 19.6 | 19.8 | 26.3 | 11.5 | 27.0 | 27.7 | 22.6 | 22.9 | 25.4 | 23.0 | 33.9 | 26.7 | 23.2 | 32.2 | 18.8 | 24.4 | 28.8 | 26.9 | 31.9 | 22.4 | 28.9 | 16.1 | −5.6 |
Ni Igeo | −1.6 | −1.4 | −1.8 | −1.5 | −1.7 | −1.3 | −1.8 | −1.5 | −0.7 | −0.9 | −1.8 | −1.6 | −2.0 | −1.5 | −1.4 | −1.6 | −1.6 | 0.0 | −2.1 | −1.5 | −1.6 | −1.6 | −1.8 | −1.9 | −1.4 | −2.1 | −2.1 |
Ni PI | 0.5 | 0.6 | 0.4 | 0.5 | 0.5 | 0.6 | 0.4 | 0.5 | 0.9 | 0.8 | 0.4 | 0.5 | 0.4 | 0.5 | 0.6 | 0.5 | 0.5 | 1.5 | 0.4 | 0.5 | 0.5 | 0.5 | 0.4 | 0.4 | 0.6 | 0.4 | 0.4 |
Pb Igeo | 0.3 | 0.2 | 0.4 | 0.5 | 0.2 | 0.6 | 0.6 | 0.1 | 1.8 | 1.8 | 0.3 | 0.3 | 0.5 | 0.5 | 1.4 | 1.4 | 0.3 | 1.2 | 0.3 | 0.6 | 0.7 | 0.8 | 0.4 | 0.3 | 0.7 | −0.5 | −0.5 |
Pb PI | 1.8 | 1.7 | 2.0 | 2.1 | 1.7 | 2.3 | 2.3 | 1.6 | 5.1 | 5.1 | 1.9 | 1.9 | 2.1 | 2.1 | 4.1 | 3.8 | 1.8 | 3.3 | 1.8 | 2.3 | 2.4 | 2.6 | 2.0 | 1.8 | 2.5 | 1.1 | 1.1 |
