Table 4 Heavy metal toxicity load (HMTL, μg/L) of the surface water based on the relative level of heavy metals.
Surface water | Toxicity of heavy metals (μg/L) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Cr | Mn | Co | Ni | Zn | As | Cd | Sb | Ba | HMTL | |
S1 | 331.9 | 933.8 | 47.2 | 1110.5 | 8226.1 | 11,067.2 | 1144.5 | 1114.9 | 24,101.3 | 48,077.4 |
S2 | 218.8 | 2136.0 | 74.1 | 1256.1 | 16,449.2 | 11,000.1 | 1241.1 | 1150.9 | 24,722.7 | 58,249.1 |
S3 | 236.6 | 39,413.0 | 374.1 | 2317.0 | 25,816.6 | 8430.3 | 1544.3 | 1256.1 | 26,090.7 | 105,478.6 |
S4 | 211.3 | 39,916.4 | 394.3 | 6209.6 | 20,229.0 | 8829.7 | 1329.0 | 1284.1 | 26,200.0 | 104,603.5 |
S5 | 183.1 | 34,421.1 | 185.4 | 1762.6 | 17,459.6 | 9243.1 | 1799.1 | 1183.0 | 26,452.0 | 92,688.9 |
S6 | 165.2 | 43,139.0 | 195.5 | 1395.2 | 14,233.7 | 8966.6 | 1581.6 | 1155.9 | 25,381.3 | 96,213.9 |
S7 | 275.3 | 43,301.0 | 235.9 | 1209.8 | 12,737.9 | 9329.7 | 1320.2 | 1128.9 | 24,688.0 | 94,226.7 |
S8 | 300.6 | 27,731.6 | 175.2 | 1165.1 | 16,972.7 | 8969.4 | 1755.1 | 1070.8 | 24,721.3 | 82,861.9 |
S9 | 327.4 | 26,686.2 | 151.7 | 1041.0 | 12,509.6 | 9505.7 | 1471.8 | 1105.8 | 24,190.7 | 76,989.9 |
S10 | 196.5 | 2122.7 | 57.3 | 1001.3 | 8366.1 | 7704.0 | 707.3 | 1136.9 | 23,629.3 | 44,921.4 |
Total | 2446.8 | 259,800.7 | 1890.6 | 18,468.1 | 153,000.5 | 93,045.9 | 13,893.9 | 11,587.3 | 250,177.3 | 804,311.3 |
Hazard intensity scere (HIS)a | 893 | 797 | 1011 | 993 | 913 | 1676 | 1318 | 601 | 800 | |
Permissible toxicity load (μg/L) | 44,650 | 239,100 | 2022 | 69,510 | 4,565,000 | 1676 | 3954 | 3606 | 1,600,000 | |
Removal of toxic metal to reduce pollution load | PTL | 7.97% | PTL | PTL | PTL | 98.20% | 71.54% | 68.88% | PTL | |
