Table 7 The HQ, HI and CR values for ingestion and dermal contact in the studied tributaries
Risk Index | Ramganga | Ghaghara | Gandak | Kosi | ||||
|---|---|---|---|---|---|---|---|---|
HQing-nc | Adult | Child | Adult | Child | Adult | Child | Adult | Child |
Mn | 5.90E-02 | 5.05E-02 | 1.68E-02 | 1.44E-02 | 1.81E-02 | 1.55E-02 | 1.28E-02 | 1.09E-02 |
Cu | 4.75E-02 | 4.07E-02 | 4.92E-03 | 4.21E-03 | 4.54E-03 | 3.89E-03 | 3.36E-03 | 2.88E-03 |
Pb | 7.20E-01 | 6.16E-01 | 1.07E-02 | 9.13E-03 | Â | Â | Â | Â |
Zn | 5.46E-02 | 4.68E-02 | 5.48E-04 | 4.69E-04 | 9.58E-04 | 8.20E-04 | 9.34E-04 | 7.99E-04 |
Ni | 3.67E-02 | 3.14E-02 | 1.36E-02 | 1.16E-02 | 1.36E-02 | 1.16E-02 | 7.22E-03 | 6.18E-03 |
Co | 1.12E-03 | 9.59E-04 | 6.22E-04 | 5.33E-04 | 7.47E-04 | 6.39E-04 | 3.73E-04 | 3.20E-04 |
As | 7.47E-01 | 6.39E-01 | 5.56E-01 | 4.76E-01 | 5.23E-01 | 4.47E-01 | 5.48E-01 | 4.69E-01 |
Se | 1.15E-02 | 9.80E-03 | 3.98E-03 | 3.41E-03 | 1.99E-03 | 1.70E-03 | 2.49E-03 | 2.13E-03 |
Cd | 2.99E-03 | 2.56E-03 | Â | Â | Â | Â | Â | Â |
Cr | 1.24E-01 | 1.07E-01 | 1.06E-01 | 9.06E-02 | 5.39E-02 | 4.62E-02 | 5.85E-02 | 5.01E-02 |
Fe | 6.78E-02 | 5.80E-02 | 5.13E-02 | 4.39E-02 | 5.32E-02 | 4.55E-02 | 3.35E-02 | 2.87E-02 |
HQder-nc | Â | Â | Â | Â | Â | Â | Â | Â |
Mn | 5.62E-05 | 1.95E-04 | 1.60E-05 | 5.55E-05 | 1.72E-05 | 5.96E-05 | 1.22E-05 | 4.21E-05 |
Cu | 9.06E-06 | 3.14E-05 | 9.36E-07 | 3.25E-06 | 8.65E-07 | 3.00E-06 | 6.40E-07 | 2.22E-06 |
Pb | 3.66E-04 | 1.27E-03 | 5.42E-06 | 1.88E-05 | Â | Â | Â | Â |
Zn | 6.24E-06 | 2.16E-05 | 6.26E-08 | 2.17E-07 | 1.10E-07 | 3.80E-07 | 1.07E-07 | 3.70E-07 |
Ni | 2.80E-03 | 9.70E-03 | 1.03E-03 | 3.58E-03 | 1.03E-03 | 3.58E-03 | 5.50E-04 | 1.91E-03 |
Co | 8.54E-09 | 2.96E-08 | 4.74E-09 | 1.64E-08 | 5.69E-09 | 1.97E-08 | 2.85E-09 | 9.86E-09 |
As | 5.69E-05 | 1.97E-04 | 4.24E-05 | 1.47E-04 | 3.98E-05 | 1.38E-04 | 4.17E-05 | 1.45E-04 |
Se | 5.45E-08 | 1.89E-07 | 1.90E-08 | 6.58E-08 | 9.48E-09 | 3.29E-08 | 1.19E-08 | 4.11E-08 |
Cd | 1.14E-07 | 3.95E-07 | Â | Â | Â | Â | Â | Â |
Cr | 3.56E-04 | 1.23E-03 | 3.02E-04 | 1.05E-03 | 1.54E-04 | 5.34E-04 | 1.67E-04 | 5.79E-04 |
Ba | 1.03E-07 | 3.57E-07 | 8.95E-08 | 3.10E-07 | 6.49E-08 | 2.25E-07 | 2.22E-08 | 7.71E-08 |
V | 1.06E-08 | 3.68E-08 | 7.40E-09 | 2.56E-08 | 5.50E-09 | 1.91E-08 | 1.02E-08 | 3.55E-08 |
Fe | 1.29E-05 | 4.47E-05 | 9.78E-06 | 3.39E-05 | 1.01E-05 | 3.51E-05 | 6.38E-06 | 2.21E-05 |
HIing | 1.873 | 1.603 | 0.764 | 0.654 | 0.670 | 0.573 | 0.667 | 0.571 |
HIdermal | 0.004 | 0.013 | 0.001 | 0.005 | 0.001 | 0.004 | 0.001 | 0.003 |
HItotal | 1.876 | 1.616 | 0.766 | 0.659 | 0.671 | 0.578 | 0.668 | 0.573 |
CR Total | 5.1E + 02 | 4.4E + 02 | 1.1E + 01 | 1.0E + 01 | 2.7E-01 | 8.7E-01 | 2.9E-01 | 9.4E-01 |