Determination of Polychlorinated Biphenyl (PCBs) and Dichlorodiphenyltrichloroethane (DDTs) in Sediments in Boeng Cheung Ek, Phnom Penh, Cambodia
In Cambodia, as in many other countries, PCBs and DDTs were used widely in many types of electrical equipment and in agriculture before being banned. They are, however, still being sold and used in Cambodia, and have been found at high levels in dead Irrawaddy dolphins from the Mekong river.
Boeng Cheung Ek is a wetland area south of Phnom Penh that receives all wastewater from the south central part of the city before it flows into the Bassac river. A rapid method was performed to measure PCBs and DDTs in sediments from Boeng Cheung Ek by High-Performance Liquid Chromatography. The results showed that p,p’- DDT and p,p’-DDE (up to 100 ppb) and possibly some PCBs, were present in the sediment from sites near where the wastewater entered the wetland, but were below detection limits at the site just before the water leaves the wetland and enters the Bassac river. The results show that the wetland is effectively trapping these toxic compounds and protecting local river systems but should cause concern for people who eat fish and shellfish caught in Boeng Cheung Ek.
ATSDR (Agency for Toxic Substances and Disease Registry) (2002a). Toxicological profile for DDT, DDE and DDD. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service. http://www.atdsr.cdc.gov/ toxprofiles/ tp35.html
ATSDR (Agency for Toxic Substances and Disease Registry) (2000b). Toxicological profile for Polychlorinated Biphenyls (PCBs). Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service. http:// www.atdsr.cdc.gov/ toxprofiles/tp17.html
ATSDR (Agency for Toxic Substances and Diseases Registry) (1994). Toxicological Profile for 4,4'-DDT, 4,4'-DDE, and 4,4'-DDD. US Public Health Service, Atlanta, GA.
Barron, M.G., Anderson, M.J., Cacela, D., Lipton, J., The, S.J., Hinton, D.E., Zelikoff, J.T., Dikkeboom, A.L., Tillitt, D.E., Holey, M. and N. Denslow (2000). PCBs, liver lesions, and biomarker responses in adult walleye (Stizostedium vitreum vitreum) collected from Green Bay, Wisconsin. Journal of Great Lakes Research, 26(3): 250-271.
Battelle Duxbury Operations SOP (2001). Soil/sediment extraction for trace metal semi-volatile organic contaminant analysis. SOP No. 5-192-05, 1-10.
Beard, J. (2006). DDT and human health. Science of the Total Environment, 355: 78-89.
Blanchard, M., Teil, M.J., Ollivon, D., Legenti, L. and M. Chevreuil (2004). Polycyclic aromatic hydrocarbons and polychlorobiphenyls in wastewaters and sewage sludges from the Paris area (France). Environmental Research, 95: 184-197.
Bowerman, W.W., Best, D.A., Grubb, T.G., Sikarskie, J.G. and J.P. Giesy (2000). Assessment of environmental endocrine disruptors in bald eagles of the Great Lakes. Chemosphere,41: 1569-1574.
Buzitis, J., Ylitalo, G.M. and M.M. Krahn (2006). Rapid method for determination of dioxin-like polychlorinated biphenyls and other congeners in marine sediment using sonic extraction and photodiode array detection. Arch. Environ. Contam. Toxicol., 51: 337-346.
Carpenter, D.O. (2006). Polychlorinated biphenyls (PCBs): Routes of exposure and effects on human health. Reviews on Environmental Health, 21(1): 1-23.
Dove, V. (2009). Mortality Investigation of the Mekong River Irrawaddy River Dolphin (Orcaella Brevirostris) in Cambodia based on Necropsy Sample Analysis. WWF Technical Report, 72 p.
Dykstra, C.R., Meyer, M.W., Stromborg, K.L., Warnke, D.K., Bowerman, W.W. and D.A. Best (2001). Association of low reproductive rates and high contaminant levels in bald eagles on Green Bay, Lake Michigan. Journal of Great Lakes Research, 27(2): 239-251.
Florida Department of Environmental Protection (1994). Approach to the Assessment of Sediment Quality in Florida Coastal Waters. Volume 1: Development and Evaluation of Sediment Quality Assessment Guidelines. Prepared by MacDonald Environmental Sciences Ltd., accessed at http://www.dep.state.fl.us/waste/quick_topics/publications/ pages/default.htm
Ingersoll, C.G., MacDonald, D.D., Wang, N., Crane, J.L., Field, L.J., Haverland, P.S., Kemble, N.E., Lindskoog, R.A., Severn, C. and D.E. Smorong (2000). Prediction of Sediment Toxicity Using Consensus-based Freshwater Sediment Quality Guidelines. EPA Report 905/R-00/007.
IPCS-WHO (2003). Polychlorinated biphenyl: Human health aspects. Concise international chemical assessment document 55.
Irvine, K.N., Sampson, M., Visoth, T., Yim, M., Veasna, K., Koottatep, T. and J. Rupp (2008). Spatial patterns of E. coli and detergents in the Boeng Cheung Ek treatment wetland, Phnom Penh, Cambodia. The 6th International Symposium on Southeast Asia Water Environment, Bandung, Indonesia, pp. 78-81.
Kunisue, T., Watanabe, M., Someya, M., Monirith, I., Minh, T.B., Subramanian, A., Tana, T.S., Viet, P.H., Prudente, M. and S. Tanabe (2002). PCDDs, PCDFs, PCBs and organochlorine insecticides in human breast milk collected from Asian developing countries: Risk assessment for infants. Organohalogen Compounds, 58: 285-287.
Lebo, J.A., Zajicek, J.L. and T.W. May (1989). Large-scale preparation of potassium hydroxide-modified silica gel adsorbent. Assoc. Off. Anal. Chem., 72: 371-373.
Loganathan, B.G., Irvine, K.N., Kannan, K., Pragatheeswaran, V. and K.S. Sajwan (1997). Distribution of selected PCB congeners in the Babcock street sewer district: A multimedia approach to identify PCB sources in combined sewer overflows (CSOs) discharging to the Buffalo River, New York. Arch Environ Contam Toxicol, 33: 133-140.
Ludwig, J.P., Giesy, J.P., Summer, C.L., Bowerman, W., Aulerich, R., Bursian, S., Auman, H.J., Jones, P.D., Williams, L.L., Tillitt, D.E. and M. Gilbertson (1993). A comparison of water quality criteria for the Great Lakes based on human and wildlife health. Journal of Great Lakes Research, 19(4): 789-807.
Minh, N.H., Minh, T.B., Kajiwara, N., Kunisue, T., Iwata, H., Viet, P.H., Tu, N.P.C., Tuyen, B.C. and S. Tanabe (2006). Contamination by polychlorinated biphenyl ethers and persistent organochlorines in catfish and feed from Mekong River Delta, Vietnam. Environmental Toxicology and Chemistry, 25(10): 2700-2709.
Monirith, I., Nakata, H., Watanabe, M., Takahashi, S., Tanabe, S. and T.S. Tana (2000). Organochlorine contamination in fish and mussels from Cambodia and other Asian countries. Water and Science Technology, 42(7-8): 241-252.
Ritter L, Solomon, K.R., Forget, J. and M. Stemeroff (1995). Persistent Organic Pollutants. United Nations Environment Programme. http://www.chem.unep.ch/POPS/ritter/en/ ritteren.pdf. Retrieved on 16 September 2007.
Rossi, L., de Alencastro, L., Kupper, T. and J. Tarradellas (2004). Urban stormwater contamination by
polychlorinated biphenyls (PCBs) and its importance for urban water systems in Switzerland. Science of the Total Environment, 322: 179-189.
Safe, S. (2004). Endocrine disruptors and human health: Is there a problem. Toxicology, 205: 3-10.
Smith, L.M., Stalling, D.L. and J.L. Johnson (1984). Determination of part-per-trillion levels of polychlorinated dibenzofurans and dioxins in environmental samples. Analytical Chemistry, 56: 1830-1842.
Smith, L.M., Schwartz, T.R., Feltz, K. and T.J. Kubiak (1990). Determination and occurrence of AHH-active poly- chlorinated biphenyls, 2,3,7,8-tetrachloro-p-dioxin and 2,3,7,8-tetrachlorodibenzofuran in Lake Michigan sediment and biota: The question of their relative toxicological significance. Chemosphere, 21: 1063–1085.
Spano, M., Toft, G., Hagmar, L., Eleuteri, P., Rescia, M., Rignell-Hydbom, A., Tyrkiel, E., Zvyezday, V., Bonde, J.P. and INUENDO (2005). Exposure to PCB and p,p’-DDE in European and Inuit populations: Impact on human sperm chromatin integrity. Human Reproduction, 20(12): 3488-3499.
Turusov, V., Rakitsky, V. and L. Tomatis (2002). Dichloro- diphenyltrichloroethane (DDT): Ubiquity, persistence, and risks. Environmental Health Perspectives, 110(2): 125-128.
Visoth, T., Yim, M., Vathna, S., Irvine, K. and T. Koottatep (2010). Efficiency of Phnom Penh’s natural wetlands in treating wastewater discharges. Asian Journal of Water, Environment and Pollution, 7(3): 39-48.
WWF internal report (2009). Diagnostic summary report on samples collected from dead Irrawaddy dolphins along the Mekong River, Phnom Penh, Cambodia.