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The Determination and Risk Assessment of Pharmaceuticals and Personal Care Products in Water Environment

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Tutor: ChenHong
School: Zhejiang University
Course: Environmental Engineering
Keywords: Pharmaceuticals and personal care products,Ultra-high performanceliquid chromato
CLC: X832
Type: Master's thesis
Year:  2013
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Abstract:
12pharmceutiacals and personal care products, including antibiotics, antiepileptics, central nervous system stimulants, anophelifuges, non-steroidal anti-inflammatory drugs and antimicrobials, were selected as target compounds in our documents. The simultaneous determining method of12target pharmaceuticals and personal care products in water and solid samples by Ultra-high Performance Liquid Chromatography tandem Mass Spectrometry was established. Water samples were pretrected by Solid Phase Extraction, while solid samples were firstly extracted by Pressurized Liquid Extracttion and later cleaned by Solid Phase Extraction. The recoveries of target analytes in spiked water samples ranged form65.0%to156.6%and relative standard deviation ranged from1.0%to15.7%(n=6); The recoveries of target analytes in spiked solid samples ranged form69.3%to96.0%and relative standard deviation ranged from3.3%to16.2%(n=6). It indicated the reliability of the established determining method. The occurrence and risk of target analytes in the river basin of Qinshan Lake were studied. According to the results, caffeine dominated in aquous phase of the whole water system with maximum concentration reaching625.9ng/L. Levels of pharmaceuticals and personal care products in water at dry season were significantly higher than wet season or median water season. Compounds like sulfamethoxazole and triclocarban produced higher risk to the waters than other compounds with maximum risk quotients of8.8and5.6respectively. Then the removals of target componds in full-scale sewage treating systems were also studied in our text. The results showed a limited ability of conventional wastewater treating processes for eliminating pharmaceuticals and personal care products from sewage. And the residual of target compounds in excess sludge produced high risk to the ecological environment. The maximum risk quotient value of triclocacarban reached1096.0. Multistage constructed wetlands as tertiary treatment of tail water failed to efficiently reduce the risk of pharmaceuticals and personal care products. And more efficient advanced treating technologies were needed. The utilization of pharmaceuticals and personal care products need to be properly managed.
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