Analysis of polychlorinated dibenzo-p-dioxins and furans in various aqueous samples in Taiwan

► Twenty-one fresh water samples in Taiwan were measured for PCDD/F concentrations. ► Different dioxin profiles in surface water and groundwater are found. ► PCDD/F congeners are predominantly distributed in solid phase. ► PCDD/Fs in fresh water were effectively removed via treatment processes. ► In...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2011-04, Vol.83 (6), p.760-766
Main Authors: Thuan, Ngo Thi, Tsai, Ching Lan, Weng, Ying Minh, Lee, Tzu Yi, Chang, Moo Been
Format: Article
Language:English
Subjects:
Applied sciences
Benzofurans - analysis
Dibenzofurans, Polychlorinated
Dioxins - analysis
Distribution
Drinking water
Environmental Monitoring
Exact sciences and technology
Fresh water
Fresh Water - chemistry
Freshwater
Furans
Groundwater
High resolution
Hydrophobicity
Mass spectrometers
PCDD/Fs
Pollution
Polychlorinated Dibenzodioxins - analogs & derivatives
Polychlorinated Dibenzodioxins - analysis
Taiwan
Water Pollutants, Chemical - analysis
Water Pollution, Chemical - statistics & numerical data
Water Supply - analysis
Water treatment
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Summary:► Twenty-one fresh water samples in Taiwan were measured for PCDD/F concentrations. ► Different dioxin profiles in surface water and groundwater are found. ► PCDD/F congeners are predominantly distributed in solid phase. ► PCDD/Fs in fresh water were effectively removed via treatment processes. ► Increase of 2,3,7,8-TeCDF after water treatment processes has been observed. Twenty-one fresh water samples were taken from reservoirs, wells and drinking water treatment plants in Taiwan for measurement of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F) concentrations. Due to low concentration of PCDD/Fs, water samples (400–1000 L) were collected by using the on-site large volume pre-concentration system and analyzed by high resolution gas chromatography (HRGC)/high resolution mass spectrometer (HRMS). Different characteristics of dioxin profiles in surface water and groundwater are observed. The PCDD/F concentrations in fresh water samples varied from 0.001 to 0.265 pg WHO 98-TEQ/L which are lower than the standard (12 pg WHO 98-TEQ/L) set by the Taiwan Environmental Protection Administration (TEPA) for drinking water. Only a small fraction (
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2011.02.065