Table S2 (a): Certified reference and obtained values for street dust samples

Cu / Zn / Mn / Cr / As / Pb / Co / Ag
GSD-6 / Certified value / 383
± 18 / 144
± 10 / 970
± 60 / 190
± 24 / 13.6
± 1.5 / 27.0
± 5 / 24.4
± 3 / 0.36
± 0.04
GSD-6 / OBTAINED-1 / 360.82 / 148.314 / 944.123 / 194.146 / 13.601 / 28.12 / 25.183 / 0.36
OBTAINED-2 / 365.25 / 145.66 / 951.23 / 193.88 / 13.451 / 27.56 / 24.88 / 0.35
OBTAINED-3 / 371.2 / 149.31 / 948.77 / 194.23 / 13.521 / 28.23 / 24.56 / 0.3
OBTAINED-4 / 368.65 / 144.27 / 949.33 / 195.01 / 13.661 / 27.15 / 25.33 / 0.32
OBTAINED-5 / 372.23 / 144.61 / 952.12 / 194.2 / 13.597 / 27.31 / 24.96 / 0.33

Table S 2(b). Comparison of heavy metals in street dust of cities around the world (Lua X et al.,2009)

City / Cu / Pb / Zn / Mn / Ni / Reference
Ottawa / 65.84 / 39.05 / 112.5 / 431.5 / 15.2 / Rasmussen et al. (2001)
Hong Kong / 110 / 120 / 3840 / 594 / 28.6 / Yeung et.al. (2003)
Aviles´ / 183 / 514 / 4892 / 1661 / 27.5 / Ordo´ nez et al. (2003)
Guangzhou / 176 / 240 / 586 / 481 / 23 / Duzgoren et al. (2006)
Calcutta (1999) / 44 / 536 / 159 / 619 / 42 / Chatterjee et al. (1999)
Calcutta (this work) / 60.72 / 383.42 / 303.23 / 392.87 / NA
Birmingham / 466.9 / 48 / 534 / NA / 41.1 / Charlesworth et al. (2003)
Coventry / 226.4 / 47.1 / 385.7 / NA / 129.7 / Charlesworth et al. (2003)
Luanda / 42 / 351 / 317 / 258 / 10 / F-Baptista et al (2005)
Amman / 177 / 236 / 358 / NA / 88 / Al-Khashman (2007)
Xi’an / 94.9 / 230.5 / 421.4 / 687 / NA / Yongming et al (2006)
Oslo / 123 / 180 / 412 / 830 / 41 / De Miguel et al., (1997)
Madrid / 188 / 1927 / 476 / 360 / 44 / De Miguel et al. (1997)
Baoji / 123.17 / 408.41 / 715.1 / 804.18 / 48.83 / De Miguel et al., (1997)

Table S2(c). Enrichment Factors(EFs) and Pollution Load Index (PLI) of selected metals

Sampling Ids / EF Cu / EF Zn / EF Mn / EF Cr / EFAs / EF Pb / EF Co / PLI
1.JADAVPUR / 0.02 / 1.46 / 0 / 0.04 / 1.42 / 35.72 / 0.11 / 0.29
2. ANWAR SH.RD. / 0.03 / 18.25 / 0 / 0.05 / 0.9 / 7.6 / 0.1 / 0.56
3.SOUTHERN AVE. / 0.03 / 2.5 / 0 / 0.04 / 1.48 / 2.57 / 0.07 / 0.21
4.LAKE GARDENS / 1.16 / 9.29 / 0 / 0.04 / 0.9 / 3.78 / 2.33 / 1.07
5.EKDALIA / 0.03 / 0.48 / 0 / 0.05 / 1.64 / 1.4 / 0.13 / 0.19
6.BALLYGUNJE.CIR.RD / 3.76 / 7.5 / 0.95 / 0.31 / 1.64 / 15.54 / 0.71 / 3.0
7.LANSDOWNE / 0.03 / 0.92 / 0 / 0.04 / 1.13 / 1.64 / 0.14 / 0.3
8.RABINDRA SAROVAR / 2.61 / 4.26 / 1.15 / 0.68 / 85.19 / 14.13 / 0.55 / 10.38
9.GARIA / 3.87 / 6.03 / 1.36 / 0.83 / 100.88 / 20.7 / 0.69 / 12.74
10.GOLF GREEN / 0.03 / 1.01 / 0 / 0.04 / 297.76 / 1.99 / 0.2 / 0.71
11.PATULI / 1.32 / 1.27 / 0.69 / 0.39 / 25.63 / 22.94 / 0.46 / 4.88
12.MUKUNDUPUR / 1.06 / 1.61 / 1.01 / 0.32 / 17.84 / 9.01 / 0.7 / 3.44
13.KALIKAPUR / 0.35 / 1.25 / 0.28 / 0.05 / 94.41 / 6.1 / 0.15 / 3.36
14.RUBY HOSP. / 0.85 / 1.49 / 0.94 / 0.42 / 125.86 / 10.45 / 0.68 / 7.42
15.DHAPA / 0.05 / 0.53 / 0.03 / 0.05 / 118.36 / 3.94 / 0.14 / 1.88
16.COLLEGE MORE / 0.76 / 1.04 / 0.37 / 0.19 / 40.82 / 13.4 / 0.25 / 3.58
17.KARUNAMOYEE / 0.02 / 0.78 / 0.55 / 0.05 / 96.6 / 2.17 / 0.23 / 1.49
18.GURUSADAY ROAD / 0.69 / 0.95 / 0.1 / 0.04 / 1.03 / 16.82 / 0.04 / 0.62
19.CAMAC ST -A / 5.19 / 7.21 / 2.35 / 0.96 / 139.99 / 30.87 / 0.66 / 16.35
20.PARK SRT-A / 1.48 / 2.06 / 0.37 / 0.23 / 36.31 / 30.09 / 0.76 / 5.29
21.CAMAC STRT. -B / 5.76 / 8.22 / 2.51 / 1.17 / 289.98 / 17.4 / 0.68 / 18.98
22.PARK STRT. -B / 3.52 / 3.86 / 0.67 / 0.18 / 39.7 / 14.07 / 0.16 / 4.8
23.CHITTARNJN AVE. / 4.7 / 4.82 / 0.81 / 1.29 / 105.02 / 34.82 / 0.28 / 10.9
24.COLLEGE STRT / 5.41 / 5.93 / 2.12 / 0.81 / 32.43 / 25.85 / 1 / 8.93
25.AMHERST STRT / 5.52 / 7.03 / 1.01 / 0.83 / 13.07 / 158.66 / 0.39 / 7.07
26.BOWBAZAR / 1.84 / 1.77 / 0.44 / 0.55 / 1.48 / 24.76 / 0.15 / 1.84
27.SOVA BAZAR / 12.43 / 12.47 / 2.68 / 3.12 / 140.96 / 61.66 / 1.25 / 25.36
28.SHYAM BAZAR / 3.52 / 5.05 / 1.06 / 1.28 / 28.69 / 21.66 / 0.6 / 6.59
29.ACH.PRAFULLA RD. / 4.41 / 4.8 / 1.32 / 0.71 / 7.89 / 44.33 / 7.79 / 6.18

Table S2 (d). Rotated component matrix

Heavy metal / Component / Communalities
PC1 / PC2
Cu / 0.897 / 0.355 / 0.931
Zn / 0.563 / 0.313 / 0.415
Mn / 0.732 / 0.521 / 0.808
Cr / 0.804 / 0.434 / 0.835
As / -0.038 / 0.797 / 0.637
Pb / 0.746 / -0.261 / 0.624
Co / 0.483 / -0.24 / 0.291
Ag / 0.169 / 0.746 / 0.584
Rotated sum of squared loadings
% variance 39.04 39.04
% cumulative 25.02 64.06