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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Toan, Pham Van Rosendahl, Ingrid Renaud, Fabrice G. Sebesvari, Zita Bläsing, Melanie |
| Spatial Coverage | Vietnam |
| Description | Country affiliation: Germany Author Affiliation: Toan PV ( United Nations University, Institute for Environment and Human Security (UNU-EHS), Bonn, Germany.) |
| Abstract | Public concern in Vietnam is increasing with respect to pesticide pollution of the environment and of drinking water resources. While established monitoring programs in the Mekong Delta (MD) focus on the analysis of organochlorines and some organophosphates, the environmental concentrations of more recently used pesticides such as carbamates, pyrethroides, and triazoles are not monitored. In the present study, household level pesticide use and management was therefore surveyed and combined with a one year environmental monitoring program of thirteen relevant pesticides (buprofezin, butachlor, cypermethrin, -endosulfan, ß-endosulfan, endosulfan-sulfate, fenobucarb, fipronil, isoprothiolane, pretilachlor, profenofos, propanil, and propiconazole) in surface water, soil, and sediment samples. The surveys showed that household level pesticide management remains suboptimal in the Mekong Delta. As a consequence, a wide range of pesticide residues were present in water, soil, and sediments throughout the monitoring period. Maximum concentrations recorded were up to 11.24 µg l(-1) in water for isoprothiolane and up to 521 µg kg(-1) dm in sediment for buprofezin. Annual average concentrations ranged up to 3.34 µg l(-1) in water and up to 135 µg kg(-1) dm in sediment, both for isoprothiolane. Occurrence of pesticides in the environment throughout the year and co-occurrence of several pesticides in the samples indicate a considerable chronic exposure of biota and humans to pesticides. This has a high relevance in the delta as water for drinking is often extracted from canals and rivers by rural households (GSO, 2005, and own surveys). The treatment used by the households for preparing surface water prior to consumption (flocculation followed by boiling) is insufficient for the removal of the studied pesticides and boiling can actually increase the concentration of non-volatile pollutants. |
| ISSN | 00489697 |
| Volume Number | 452-453 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-05-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Drinking Water Analysis Geologic Sediments Pesticides Water Pollutants, Chemical Agriculture Methods Chemistry Environmental Exposure Adverse Effects Environmental Monitoring Family Characteristics Humans Pesticide Residues Rural Population Seasons Soil Pollutants Vietnam Water Purification Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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