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Table 7 Concentration of heavy metals in soil samples of Kannur district

From: Effect of urbanization on heavy metal contamination: a study on major townships of Kannur District in Kerala, India

Sample ID

Sampling location

Pb (ppm)

As (ppm)

Hg (ppm)

Cd (ppm)

Zn (ppm)

Fe (ppm)

S1

New Mahe Beach

17.1

3.4

0.9

0.4

12.4

23,876.6

S2

Punnol Beach

11.2

0.8

0.7

0.4

2.1

18,954.8

S3

Thalassery Harbour

327.3

11.2

8.6

0.7

112.3

65,798.3

S4

Thalassery Market

647.3

17.8

11.7

6.4

189.3

86,574.5

S5

Co-operative Hospital, Thalassery

478.4

19.3

9.1

2.3

134.2

78,564.2

S6

Dharmadam Beach

45.3

1.8

1.6

0.8

14.3

13,897.3

S7

Edakkad Beach

8.4

0.7

0.7

0.5

1.5

16,457.1

S8

Aadi Kadalayi Beach

19.8

0.8

0.6

0.6

6.5

13,478.4

S9

Mapila Bay Harbour

234.7

13.2

1.1

1.3

75.6

58,724.2

S10

Kannur New Bus Stand

725.1

21.3

12.4

7.3

210.4

97,874.3

S11

Payyambalam Beach

16.3

0.9

0.7

0.4

7.5

14,657.1

S12

Valapattanam

456.5

4.5

6.4

1.4

124.3

42,664.2

S13

Azhikkal Port Jetty

513.8

16.8

8.7

4.6

98.4

84,235.3

S14

Azhikkal

478.3

14.3

6.5

4.3

112.4

65,427.6

S15

Pazhayangadi

98.3

1.2

1.1

0.8

12.3

24,983.3

S16

Chootad Beach

7.3

0.8

0.8

0.3

4.3

11,564.2

S17

Thaliparamba

398.9

14.8

7.3

1.9

126.7

65,124.5

S18

Kuppam Bridge

75.4

2.7

4.1

0.9

90.2

58,463.4

S19

Perumba

24.8

12.4

2.3

0.8

64.2

47,569.3

S20

Payyanur Rly Road

156.3

8.7

4.3

1.4

63.5

34,785.6

Minimum

 

7.3

0.7

0.6

0.3

1.5

11,564.2

Maximum

 

725.1

21.3

12.4

7.3

210.4

97,874.3

Mean

 

237.025

8.37

4.48

1.875

73.12

46,183.71

Standard Deviation

 

242.373

7.341

4.020

2.084

64.990

28,323.77