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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