Abstract

Geochemical study was undertaken to assess the extent and health impact of toxic heavy metals intrusion to surface and sub-surface water resources in and around uncontrolled solid waste dumpsite of a metropolitan city in India. Water samples were collected from the vicinity of the site with different metal concentration scenario. The concentration (μgL-1) of toxic metals/metalloids viz Cr 27.5±15.4, Mn 257.2±330.9, Co 0.5±0.5, Ni 4.0±2.3, As 18.4±12.6, Cu 5.3±5.0, Zn 292.7±466.7, Cd 0.2±0.5, Pb 1.0±0.4, V 36.8±16.8) were observed in above samples through estimation in dynamic reaction cell inductively coupled plasma mass spectrometry (DRC-ICP-MS). Human health was evaluated for potential non-carcinogenic hazard quotient (HQ) and carcinogenic risk (CR) for the nearby habitants considering all possible exposure routes. The cumulative hazard index (dermal and ingestion) for child (Σ HI = 4.26E+00) and adult (2.59E+00) reveals that toxic risk is beyond tolerable limit (HQ > 1.00). Arsenic was identified as the most significant pollutant of concern among the ten heavy metals; both its values of the HQ and CR indicated potentially undesirable health risks for the local residents. The estimated risk level for As exposure (3.56E-04) is exceeding the safe standard for cancer (CR=1.0E- 6) unveil that residents confront higher risks, with carcinogenic effects that average 4 in 10,000. However, the cancer risk due to Pb exposure (1.11E-07) is within the target level.

Keywords: Solid waste dumpsite; Water samples; Heavy metals; Health risk assessment; Hazard quotient; Cancer risk.

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How to Cite
[1]
Parth, V. and Mukherjee, S. 2016. Human Health Risk Evaluation of Dissolved Metals in Water Resources in and Around MSW Disposal Site in Kolkata. International Journal of Science and Engineering Invention. 2, 01 (Jan. 2016), 67 to 76. DOI:https://doi.org/10.23958/ijsei/vol02-i01/03.

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Copyright © 2016 Vandana Parth Somnath Mukherjee this is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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This work is licensed under a Creative Commons Attribution 4.0 International License.