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Bulletin of the National Research Centre

Table 9 Contamination factor

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

0.855

0.262

2.25

1.333

0.131

0.506

S2

Punnol Beach

0.56

0.062

1.75

1.333

0.022

0.402

S3

Thalassery Harbour

16.365

0.862

21.5

2.333

1.182

1.394

S4

Thalassery Market

32.365

1.369

29.25

21.333

1.993

1.834

S5

Co-operative Hospital, Thalassery

23.92

1.485

22.75

7.667

1.413

1.664

S6

Dharmadam Beach

2.265

0.138

4.0

2.667

0.151

0.294

S7

Edakkad Beach

0.42

0.054

1.5

1.667

0.016

0.349

S8

Aadi Kadalayi Beach

0.99

0.054

1.5

2.0

0.068

0.286

S9

Mapila Bay Harbour

11.735

1.015

2.75

4.333

0.796

1.244

S10

Kannur New Bus Stand

36.255

1.638

31.0

24.333

2.215

2.074

S11

Payyambalam Beach

0.815

0.069

1.75

1.333

0.079

0.311

S12

Valapattanam

22.825

0.346

16.0

4.667

1.308

0.904

S13

Azhikkal Port Jetty

25.69

1.292

21.75

15.333

1.036

1.785

S14

Azhikkal

23.915

1.1

16.25

14.333

1.183

1.386

S15

Pazhayangadi

4.915

0.092

2.75

2.667

0.129

0.529

S16

Chootad Beach

0.365

0.062

2.0

1.0

0.045

0.245

S17

Thaliparamba

19.945

1.138

18.25

6.333

1.334

1.38

S18

Kuppam Bridge

3.77

0.208

10.25

3.0

0.949

1.239

S19

Perumba

1.24

0.954

5.75

2.667

0.676

1.008

S20

Payyanur Rly Road

7.815

0.669

10.75

4.667

0.668

0.737

Minimum

 

0.365

0.054

1.5

1.0

0.016

0.245

Maximum

 

36.255

1.638

29.25

24.333

2.215

1.834

Mean

 

11.851

0.643

11.188

6.250

0.770

0.979

Standard deviation

 

12.119

0.565

10.063

6.946

0.684

0.600

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