文章基本信息

标题：Temporal variability of disinfection by-products concentration in urban public water system
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作者：Siddique A ; Saied S ; Zaigham N.A 等
期刊名称：Global Nest
印刷版ISSN：1790-7632
电子版ISSN：2241-777X
出版年度：2012
卷号：14
期号：4
页码：393-398
DOI：10.30955/gnj.000902
出版社：Global Nest
摘要：The occurrence of trihalomethanes (THMs) was studied in the drinking water samples from urban water supply network of Karachi city that served more than 18 million people. Drinking water samples were collected from 58 locations in summer (May-August) and winter (November-February) seasons. The major constituent of THMs detected was chloroform in winter (92.34%) and summer (93.07%), while the other THMs determined at lower concentrations. Summer and winter concentrations of total THMs at places exceed the levels regulated by UEPA (80 μg l-1) and WHO (100 μg l-1). GIS linked temporal variability in two seasons showed significantly higher median concentration (2.5%-23.06%) of THMs compared to winter.
关键词：trihalomethanes; seasonal variability; chlorination; chloroform; drinking water; WHO; GIS