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Human Health Risk Assessment for Inhabitants of Four Towns of Rajshahi, Bangladesh due to Arsenic, Cadmium and Lead Exposure |
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| รหัสดีโอไอ | |
| Creator | Nazmul Islam, Entazul M. Huq, Nurul Islam, Asadul Islam, Rustom Ali, Rehena Khatun, Niamul Haque, Rafiqul Islam, Sultana Nasima Akhter |
| Title | Human Health Risk Assessment for Inhabitants of Four Towns of Rajshahi, Bangladesh due to Arsenic, Cadmium and Lead Exposure |
| Publisher | The Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2561 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 11 |
| Journal No. | 1 |
| Page no. | 168-182 |
| Keyword | human health, risk assessment, arsenic, lead, cadmium, exposure |
| ISSN | 2586-8861 |
| Abstract | We performed a risk assessment for inhabitants of four towns of Rajshahi, Bangladesh beside the silt (toxic metal enriched) carrying river Padma due to arsenic, cadmium and lead exposures from consumption of rice, vegetables, fish, drinking water and dust. As, Cd and Pb concentrations in the samples (n=300) ranged 0.002-3.441, 0.001-0.017 and 0.001-0.398 ?g g-1 (ww) respectively. Since P<0.05, Levene and Kruskal-Wallis tests revealed that there were statistically significant differences amongst both standard deviations and medians of the data at 95% confidence level respectively. Generally concentrations of the concerned metals in the samples followed the order: Dust>Rice>Fish>Vegetables>Drinking water. Bangladeshi consumption rate showed that rice alone imposed most of As and Pb load, whereas drinking water most of Cd load. We utilized USEPA risk assessment model and considered potential exposure pathways (diet and non-diet ingestion, and dust inhalation). Ingestion accounted for 95.0-99.9% exposure, whereas inhalation only 0.1-5.0% exposure. Risk, defined as ?Hazard Index? (HI), was mapped for three population sub-groups: Highly Exposed Child, Average Person and Senior. The results showed that all children (0-6 years) were at health risk, whereas 70% of seniors and 60% of average persons (i.e., adults) were safe in consuming the foods. The contribution of the metals in total exposure was As(69%)>Cd(21%)>Pb(10%). This study highlights the importance of sight-specific human health risk assessment considering more pollutant parameters. |
