Fluorescence analysis of centralized water supply systems: Indications for rapid cross-connection detection and water quality safety guarantee.

Pan, S; Chen, X; Cao, C; Chen, Z; Hao Ngo, H; Shi, Q; Guo, W; Hu, H-Y

Fluorescence analysis of centralized water supply systems: Indications for rapid cross-connection detection and water quality safety guarantee.

Pan, S Chen, X Cao, C Chen, Z Hao Ngo, H Shi, Q Guo, W

Hu, H-Y

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Chemosphere, 2021, 277, pp. 130290
Issue Date:: 2021-08

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Field	Value	Language
dc.contributor.author	Pan, S
dc.contributor.author	Chen, X
dc.contributor.author	Cao, C
dc.contributor.author	Chen, Z
dc.contributor.author	Hao Ngo, H
dc.contributor.author	Shi, Q
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Hu, H-Y
dc.date.accessioned	2021-06-22T02:37:11Z
dc.date.available	2021-03-14
dc.date.available	2021-06-22T02:37:11Z
dc.date.issued	2021-08
dc.identifier.citation	Chemosphere, 2021, 277, pp. 130290
dc.identifier.issn	0045-6535
dc.identifier.issn	1879-1298
dc.identifier.uri	http://hdl.handle.net/10453/149705
dc.description.abstract	Better insight into non-potable reclaimed water and drinking water can produce more reliable risk assessment and help to achieve sustainable water reuse in the long-term. This study illustrates the effectiveness of fluorescence excitation-emission matrix (EEM) for rapid cross-connection detection. Based on samples collected from three different sites of China, it is identified that the overall fluorescence intensity was 6-31 times of reclaimed to drinking water in water samples at all FRI regions. This is shown to be highly sensitive over conventional water quality parameters. Furthermore, based on parallel factor analysis (PARAFAC), humic acid and tryptophan are considered as the main components contributing to fluorescence both in secondary and tertiary effluents. Total fluorescence intensities as well as fluorescence peaks of EEM pairs were investigated. Under different mixing scenarios, it is found that the signal is distinguishable as low as 20% of reclaimed water. This study also offers possibility of exploring portable devices with identified fluorescence peaks in EEM regions for risk prevention and water quality monitoring at end user sites.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	Chemosphere
dc.relation.isbasedon	10.1016/j.chemosphere.2021.130290
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Environmental Sciences
dc.subject.classification	Meteorology & Atmospheric Sciences
dc.subject.mesh	Water
dc.subject.mesh	Humic Substances
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Spectrometry, Fluorescence
dc.subject.mesh	Factor Analysis, Statistical
dc.subject.mesh	Water Supply
dc.subject.mesh	China
dc.subject.mesh	Water Quality
dc.subject.mesh	China
dc.subject.mesh	Factor Analysis, Statistical
dc.subject.mesh	Humic Substances
dc.subject.mesh	Spectrometry, Fluorescence
dc.subject.mesh	Water
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Water Quality
dc.subject.mesh	Water Supply
dc.title	Fluorescence analysis of centralized water supply systems: Indications for rapid cross-connection detection and water quality safety guarantee.
dc.type	Journal Article
utslib.citation.volume	277
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
dc.date.updated	2021-06-22T02:37:10Z
pubs.publication-status	Accepted
pubs.volume	277

Abstract:

Better insight into non-potable reclaimed water and drinking water can produce more reliable risk assessment and help to achieve sustainable water reuse in the long-term. This study illustrates the effectiveness of fluorescence excitation-emission matrix (EEM) for rapid cross-connection detection. Based on samples collected from three different sites of China, it is identified that the overall fluorescence intensity was 6-31 times of reclaimed to drinking water in water samples at all FRI regions. This is shown to be highly sensitive over conventional water quality parameters. Furthermore, based on parallel factor analysis (PARAFAC), humic acid and tryptophan are considered as the main components contributing to fluorescence both in secondary and tertiary effluents. Total fluorescence intensities as well as fluorescence peaks of EEM pairs were investigated. Under different mixing scenarios, it is found that the signal is distinguishable as low as 20% of reclaimed water. This study also offers possibility of exploring portable devices with identified fluorescence peaks in EEM regions for risk prevention and water quality monitoring at end user sites.

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http://hdl.handle.net/10453/149705