Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Identifying and Monitoring the Landfill Leachate Contamination in Groundwater with SEC-DAD-FLD-OCD and a Portable Fluorescence Spectrometer
https://orcid.org/0000-0001-7447-4848
https://orcid.org/0000-0001-8753-1901
https://orcid.org/0000-0002-9158-6216
https://orcid.org/0000-0002-9120-1558
Landfill leachate contains high concentrations of dissolved organic matter (DOM), which might leak into the groundwater as a contaminant plume. In this study, 6 landfill leachates, 11 landfill solid waste and soil samples, and 102 groundwater samples around 24 landfills were collected, in order to identify the suitable tracers and develop a convenient technique for monitoring groundwater contamination from landfill leachate. Characterized by the size exclusion chromatography-diode array detector-fluorescence detector-organic carbon detector (SEC-DAD-FLD-OCD) chromatograms, DOM in landfill leachate consisted of a characteristic humic-like fluorophore with triple-excitation peaks at Ex ∼ 250, 310, and 365 nm/Em ∼ 460 nm (HS-Em460-Ex3). With an apparent MW of 1.4–2.5 kDa, this unique HS-Em460-Ex3 fluorophore was refractory to biodegradation and possibly originated from the biotransformation of dyes in municipal solid wastes. Via principal factor analysis, groundwater samples were clustered into two groups mainly by the PC1 dimension, which mainly represented the variances in DOM concentration. The samples in Group II all showed the characteristic HS-Em460-Ex3 fluorophore, which could serve as an intrinsic fluorescence tracer of landfill leachate contamination. Checked by SEC-FLD analysis, the humic-like fluorescence threshold value was proposed as 50 QSU to indicate the pollution risks of groundwater around landfills, and the portable UV-LED fluorescence spectrometer provides an on-site tool for fast screening groundwater contamination from landfill leachate. The SEC-FLD fingerprint and the portable fluorescence spectrometer were developed for identifying and fast screening groundwater contamination from landfill leachate.
SEC-FLD fingerprint and the portable fluorescence spectrometer were developed for identifying and fast screening groundwater contamination from landfill leachate.
Identifying and Monitoring the Landfill Leachate Contamination in Groundwater with SEC-DAD-FLD-OCD and a Portable Fluorescence Spectrometer
https://orcid.org/0000-0001-7447-4848
https://orcid.org/0000-0001-8753-1901
https://orcid.org/0000-0002-9158-6216
https://orcid.org/0000-0002-9120-1558
Landfill leachate contains high concentrations of dissolved organic matter (DOM), which might leak into the groundwater as a contaminant plume. In this study, 6 landfill leachates, 11 landfill solid waste and soil samples, and 102 groundwater samples around 24 landfills were collected, in order to identify the suitable tracers and develop a convenient technique for monitoring groundwater contamination from landfill leachate. Characterized by the size exclusion chromatography-diode array detector-fluorescence detector-organic carbon detector (SEC-DAD-FLD-OCD) chromatograms, DOM in landfill leachate consisted of a characteristic humic-like fluorophore with triple-excitation peaks at Ex ∼ 250, 310, and 365 nm/Em ∼ 460 nm (HS-Em460-Ex3). With an apparent MW of 1.4–2.5 kDa, this unique HS-Em460-Ex3 fluorophore was refractory to biodegradation and possibly originated from the biotransformation of dyes in municipal solid wastes. Via principal factor analysis, groundwater samples were clustered into two groups mainly by the PC1 dimension, which mainly represented the variances in DOM concentration. The samples in Group II all showed the characteristic HS-Em460-Ex3 fluorophore, which could serve as an intrinsic fluorescence tracer of landfill leachate contamination. Checked by SEC-FLD analysis, the humic-like fluorescence threshold value was proposed as 50 QSU to indicate the pollution risks of groundwater around landfills, and the portable UV-LED fluorescence spectrometer provides an on-site tool for fast screening groundwater contamination from landfill leachate. The SEC-FLD fingerprint and the portable fluorescence spectrometer were developed for identifying and fast screening groundwater contamination from landfill leachate.
SEC-FLD fingerprint and the portable fluorescence spectrometer were developed for identifying and fast screening groundwater contamination from landfill leachate.
Identifying and Monitoring the Landfill Leachate Contamination in Groundwater with SEC-DAD-FLD-OCD and a Portable Fluorescence Spectrometer
https://orcid.org/0000-0001-7447-4848
https://orcid.org/0000-0001-8753-1901
https://orcid.org/0000-0002-9158-6216
https://orcid.org/0000-0002-9120-1558
Landfill leachate contains high concentrations of dissolved organic matter (DOM), which might leak into the groundwater as a contaminant plume. In this study, 6 landfill leachates, 11 landfill solid waste and soil samples, and 102 groundwater samples around 24 landfills were collected, in order to identify the suitable tracers and develop a convenient technique for monitoring groundwater contamination from landfill leachate. Characterized by the size exclusion chromatography-diode array detector-fluorescence detector-organic carbon detector (SEC-DAD-FLD-OCD) chromatograms, DOM in landfill leachate consisted of a characteristic humic-like fluorophore with triple-excitation peaks at Ex ∼ 250, 310, and 365 nm/Em ∼ 460 nm (HS-Em460-Ex3). With an apparent MW of 1.4–2.5 kDa, this unique HS-Em460-Ex3 fluorophore was refractory to biodegradation and possibly originated from the biotransformation of dyes in municipal solid wastes. Via principal factor analysis, groundwater samples were clustered into two groups mainly by the PC1 dimension, which mainly represented the variances in DOM concentration. The samples in Group II all showed the characteristic HS-Em460-Ex3 fluorophore, which could serve as an intrinsic fluorescence tracer of landfill leachate contamination. Checked by SEC-FLD analysis, the humic-like fluorescence threshold value was proposed as 50 QSU to indicate the pollution risks of groundwater around landfills, and the portable UV-LED fluorescence spectrometer provides an on-site tool for fast screening groundwater contamination from landfill leachate. The SEC-FLD fingerprint and the portable fluorescence spectrometer were developed for identifying and fast screening groundwater contamination from landfill leachate.
SEC-FLD fingerprint and the portable fluorescence spectrometer were developed for identifying and fast screening groundwater contamination from landfill leachate.
Identifying and Monitoring the Landfill Leachate Contamination in Groundwater with SEC-DAD-FLD-OCD and a Portable Fluorescence Spectrometer
Jiang, Bi-Cun (Autor:in) / Tian, Ye-Chao (Autor:in) / Ji, Wen-Xiang (Autor:in) / Cai, Min-Hui (Autor:in) / Han, Yu-Ze (Autor:in) / Zuo, Yan-Ting (Autor:in) / Shuang, Chen-Dong (Autor:in) / He, Xiao-Song (Autor:in) / Liu, Fu-Qiang (Autor:in) / Li, Wen-Tao (Autor:in)
ACS ES&T Water ; 2 ; 165-173
14.01.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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