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Overview of Environmental Contamination in Lao PDR

Overview of Environmental Contamination in Lao PDR. Dr. Kesiny Phomkeona Department of Chemistry Faculty of Science National University of Laos. Chemistry Department Establishment. Department of Chemistry (DOC) was found along with the establishment of National University ( 05-11-1996 ).

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Overview of Environmental Contamination in Lao PDR

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  1. Overview of Environmental Contamination in Lao PDR Dr. KesinyPhomkeona Department of Chemistry Faculty of Science National University of Laos

  2. Chemistry Department Establishment • Department of Chemistry (DOC) was found along with the establishment of National University (05-11-1996). • DOC is a department member of Faculty of Science (FOS). Mrs. Sysavad LUANGSISUPHAN Head of Chemistry Department

  3. Chemistry Department Academic Distribution Theoretical and practical works are distributed to not only chemistry students but also to other students from other institutes.

  4. Chemistry Department Main Research Facilities HPLC/UV-Vis or RID and IC/CD TOC Analyzer UV-Vis Spectrophotometers AAS/Hydride Generation for As and Cold for Hg CO2 Analyzer DI water production system and electric Balance GC-MS

  5. Chemistry Department Previous Research activities Water Quality research Pesticide Residue Research

  6. Research Activities in Chemistry Department, NUOL • Pesticide Residues Analysis: Research is focused on contamination of organochlorine pesticides in foods and environmental samples (2005-2012). • Water Qualities Analysis: Conduct research in water contaminations and water quality test for fresh and wastewater, and drinking water.

  7. General Information • Land area: 236,800 km2 • Stocked forest land >40% • Population: 6.5 million people (2012) • Approx. 83% of population live in rural area.

  8. Current Environment Issue in Lao PDR The environment and natural resources of Lao PDR are being threatened by a number of factors associated with the mining sector, including hazardous chemicals, including heavy metals such as mercury, lead, cadmium, arsenic, chromium, copper, and zinc as well as persistent organic pollutants (POPs) such as dioxins and furans, PCBs, and various pesticides and herbicides.

  9. Current and Future Interested Researches • Water Quality. • Pesticide Residue. • Chemical Contaminants in Food and water. • Renewable Energy-Biodiesel. • Air pollution.

  10. Previous Study on Pesticide Residue • Department of Chemistry have had assistance from International Program in Chemical Science (IPICS)/ISP, Sweden, to set up capacity on pesticide residue analysis including laboratory and methods to be used since 2005. • The primary focus of the project was qualitative analysis of organochlorinepesticides in samples, including evaluation of extraction methods by recovery tests, to get an idea of which pesticides can be found in the environment.

  11. 2008 (Department of Chemistry, NUOL) • The following organochlorine pesticides were found in sediments, water and aquatic animals samples collected from Vientiane capital.

  12. 2009 (Department of Chemistry, NUOL) • The following organochlorine pesticides were found in fruits and vegetable samples collected from local markets in Vientiane capital.

  13. 2012 (Department of Chemistry, NUOL)

  14. Previous Studies on Water Contamination by Heavy Metals • Water Quality Unit of Chemistry Department has conducted researches on water contamination of heavy metals. The studies were done by staff members and together with supporting undergraduate students to undergo their final projects.

  15. Analysis of heavy metals in samples were performed by Atomic Absorption Spectrophotometer (AAS) with suitable technique for each element. • Hg : AAS with cold vapor generation • As : AAS with hydride generation • Zn,Cd, Fe, and others: AAS with flame

  16. Hg Contamination in Aquatic Samples(2012) MPL = Maximum Permissible Level

  17. Hg Contamination in Water Samples MPL = Maximum Permissible Level

  18. Hg Contamination in Sediment Samples MPL = Maximum Permissible Level

  19. Arsenic Contamination in Ground Water(UNESCO 2011) • River mouth & along Mekong River • STD = 10 ppb

  20. Arsenic Contamination in Ground Water(ISP 2012) MPL = Maximum Permissible Level

  21. Conclusion • Environmental samples in Laos are nowadays contaminated by toxic heavy metals (As and Hg) which exceed maximum permissable limit. • Organophosphorus and Pyrethroid are nowadays widely used in Laos. • Studies on Organophosphorus and Pyrethroid are not able to do. Due to the limitation of chemicals and equipments and human resourse.

  22. Acknowledgement IPIC/ISP Assoc. Prof. Dr. Peter Sundin Mr. Lars Lundmark Mr. S. Bouta Dr. P. Inthapanya Ms. S. Louangsysouphan Ms. V. Chounlamany Mr. V. Phouthavong

  23. THANK YOU

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