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|Title:||OCCURRENCE AND ENVIRONMENTAL FATE OF PHARMACEUTICALS, PERSONAL CARE PRODUCTS (PPCPS) AND ENDOCRINE DISRUPTING CHEMICALS (EDCS) IN A TROPICAL URBAN CATCHMENT||Authors:||YOU LUHUA||Keywords:||Distribution, Sorption, Degradation, Surface water, Sediment, Liquid chromatography-tandem mass spectrometry||Issue Date:||3-Aug-2016||Citation:||YOU LUHUA (2016-08-03). OCCURRENCE AND ENVIRONMENTAL FATE OF PHARMACEUTICALS, PERSONAL CARE PRODUCTS (PPCPS) AND ENDOCRINE DISRUPTING CHEMICALS (EDCS) IN A TROPICAL URBAN CATCHMENT. ScholarBank@NUS Repository.||Abstract:||This thesis focuses on the distribution and attenuation behavior of selected PPCPs/EDCs in an urban catchment of Singapore. The spatial and temporal patterns of the target analytes (including pharmaceuticals, hormones, plasticizers, insect repellents, disinfectants and UV filters) in surface waters during a 16-month field survey were evaluated and correlated to environmental factors. The information obtained contributes to their risk assessment in urban aquatic environments. The multi-phase distribution of PPCPs/EDCs was further examined in catchment water and bottom sediments. The relationship between the field-based partitioning coefficients and Log Kow for these analytes was examined. The characteristics of sorption, biodegradation and photolysis of 7 most frequently detected PPCPs in the water environment were also investigated in controlled laboratory experiments. The study revealed the impacts of sorption history, environmental matrices and hysteresis in the sorption-desorption process as well as the degradation kinetics in both surface water and sediments.||URI:||http://scholarbank.nus.edu.sg/handle/10635/134350|
|Appears in Collections:||Ph.D Theses (Open)|
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