| Autor: |
Navarrete IA; Department of Environmental Science, Ateneo de Manila University, Loyola Heights, 1108, Quezon City, Philippines. inavarrete@ateneo.edu., Tee KAM; Department of Environmental Science, Ateneo de Manila University, Loyola Heights, 1108, Quezon City, Philippines., Unson JRS; Department of Environmental Science, Ateneo de Manila University, Loyola Heights, 1108, Quezon City, Philippines., Hallare AV; Department of Biology, College of Arts and Sciences, University of the Philippines Manila, Padre Faura St., 1000, Manila, Philippines. |
| Jazyk: |
angličtina |
| Zdroj: |
Environmental monitoring and assessment [Environ Monit Assess] 2018 Apr 17; Vol. 190 (5), pp. 289. Date of Electronic Publication: 2018 Apr 17. |
| DOI: |
10.1007/s10661-018-6680-9 |
| Abstrakt: |
Pesticide use in developing countries such as the Philippines has significantly increased food production. However, the improper and poorly regulated practice of pesticide use may lead to pollution of water resources. To detect and assess the extent of pesticide contamination, residues of organochlorine pesticides were tested in surface water and groundwater in selected areas along the Pampanga River, Philippines. The physicochemical properties of the surface water and ground water were also analyzed and results revealed that phosphate concentrations in surface water and groundwater samples were two to three times higher than the regulatory limits of 0.5 mg L -1 , whereas the nitrate concentrations were below the regulatory limit of 7 mg L -1 . Results further revealed that surface water and groundwater showed the presence of seven organochlorine pesticides and residues listed in the Stockholm Convention list of 2009 such as dieldrin, endrin aldehyde, α-BHC, β-BHC, δ-BHC, γ-chlordane, and endosulfan II. The concentrations of organochlorine pesticides including endrin aldehyde, total BHCs (i.e., α-BHC, β-BHC, δ-BHC), and heptachlor in groundwater were also found to exceed regulatory limits, indicating that these chemicals are still being used illegally and remains a major environmental concern despite the bans and restrictions. We suggest that routine chemical monitoring (including seasonal variations) coupled with biological monitoring using a battery of biomarker tests of organochlorine pesticide and residues along the Pampanga River is necessary to provide inputs for the control and reduction of environmental pollution and for minimizing human health risks. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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