Table 3 Comparison of PTMs concentrations in road dust reported in recent literature nearby countries.

From: Unveiling sources, contamination, and eco-human health implications of potentially toxic metals from urban road dust

Study area

PTMs concentration in road dust (mgkg−1)

As

Cd

Co

Cr

Cu

Hg

Mo

Ni

Pb

Sb

Zn

Present studya

11.1

2.40

9.19

100

44.1

21.5

686

21.3

61.1

3.99

117

Sharjah, UAEb

0.97

1.25

-

460

150

-

-

856

68.3

-

392

Datong, Chinac

12.3

0.47

11.8

109

32.1

0.09

-

30.3

31.6

-

172

Zunyi, Chinad

-

-

16.2

127

134

-

-

43.2

86.8

-

507

Islamabad, Pakistane

-

5.0

-

-

52

-

-

23

104

-

116

Lahore, Pakistanf

-

1.4

-

-

23.9

-

-

13.9

44.3

-

67.9

Faisalabad, Pakistanf

-

1.3

-

-

25.7

-

-

11.4

38

-

64.1

Charsadda, Pakistang

-

5.89

44.8

16.2

119

-

-

52

338

-

908

Jharkhand, Indiah

70.2

1.2

21

167

1146

-

-

87.3

112

-

947

Busan, South Koreai

13.3

1.1

8.7

92.2

80.7

0.01

-

15.6

85.3

5.4

430

Huainan, Chinaj

12

0.64

2.94

83

57

0.26

-

23

71

-

828

Dhaka, Bangladeshk

8.09

11.6

-

144

49.7

-

-

37.1

18.9

-

239

Jeddah, Saudi Arabial

21.6

7.46

11.7

65.4

139

-

-

11.7

141

-

488

  1. a = average concentration of PTMs in dust from all selected roads.
  2. b =58, c =59, d =60, e =24, f =23, g =61, h =38, i =62, j =63, k =64, l =65.