Adaptive monitoring approach to assess dissolved organic matter dynamics during rainfall events

被引:10
作者
Kozak, Caroline [1 ]
Leithold, Juliana [1 ]
do Prado, Luciane Lemos [2 ]
Knapik, Heloise Garcia [2 ]
de Rodrigues Azevedo, Julio Cesar [3 ]
Braga, Sergio Michelotto [2 ]
Fernandes, Cristovao Vicente Scapulatempo [2 ]
机构
[1] Fed Univ Parana UFPR, Grad Program Water Resources & Environm Engn PPGe, Av Cel Francisco H Santos, BR-81531980 Curitiba, Parana, Brazil
[2] UFPR, Dept Hydraul & Sanitat DHS, Av Cel Francisco H Santos, BR-81531980 Curitiba, Parana, Brazil
[3] Technol Fed Univ Parana UTFPR, Dept Biol & Chem, R Dep Heitor Alencar Furtado 5000, BR-81280340 Curitiba, Parana, Brazil
关键词
Non-point source pollution; Automatic sampling; Optical properties; River pollution; Land use; WATER-QUALITY; STORM EVENTS; HUMIC SUBSTANCES; SURFACE-WATER; RIVER; FLUORESCENCE; CARBON; TIME; SPECTROSCOPY; SEDIMENT;
D O I
10.1007/s10661-021-09183-y
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Rainfall events induce water quality transformation in river systems influenced by the watershed land use and hydrology dynamics. In this context, an adaptive monitoring approach (AMA) is used to assess non-point sources (NPS) of pollution events, through dissolved organic matter (DOM) contribution. The case study is a monitoring site in a semi-urban watershed characterized by NPS contribution. An integrated quali-quantitative method for DOM based on dissolved organic carbon (DOC) content, spectroscopic techniques of excitation-emission fluorescence (EEF), and UV-visible absorbance is proposed. The results indicate a mix of allochthonous and autochthonous DOM characteristics from NPS sources associated to vegetation area influence (A(285)/DOC of 15.43 L (g cm)(-1) and SUVA(254) of 2.11 L (mg m)(-1)). The EEF signals showed more humic-like than protein-like characteristics with peaks A and C (approximately 5.72 r.u.) more intense than peaks B, T-1, and T-2 (approximately 4.33 r.u.), indicating NPS from the soil leachate. The absorbance ratio values indicate a mix of organic compounds with greater proportion of refractory characteristics with high aromaticity and molecular weight (approximately A(300)/A(400) of 4.15 and A(250)/A(365) of 4.48), associated with the surface wash-off of accumulated residual and subsurface soil erosion, which contribute to complex organic matter structures. The fluorescence indexes, overall, indicated allochthonous sources with intermediate humic characteristics (FI approximate to 1.43, BIX approximate to 0.65, and HIX approximate to 7.98). The proposed integrated optical property strategy represents an opportunity for better understanding of DOM dynamic assessment for identifying potential mitigation techniques for organic pollution control and improving water quality conditions.
引用
收藏
页数:19
相关论文
共 61 条
[1]   Time as the critical factor in the investigation of the relationship between pollutant wash-off and rainfall characteristics [J].
Alias, Noraliani ;
Liu, An ;
Goonetilleke, Ashantha ;
Egodawatta, Prasanna .
ECOLOGICAL ENGINEERING, 2014, 64 :301-305
[2]  
APHA AWWA WEF, 2012, An. Hidrol. Medica., V22nd, DOI [10.5209/rev_ANHM.2012.v5.n2.40440, DOI 10.5209/REV_ANHM.2012.V5.N2.40440, DOI 10.5209/REVANHM.2012.V5.N2.40440,186]
[3]   Phosphorus dynamics during storm events in a subtropical rural catchment in southern Brazil [J].
Bender, Marcos Antonio ;
dos Santos, Danilo Rheinheimer ;
Tiecher, Tales ;
Gomes Minella, Jean Paolo ;
Peixoto de Barros, Claudia Alessandra ;
Ramon, Rafael .
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2018, 261 :93-102
[4]   Characterization of dissolved organic matter in cave and spring waters using UV-Vis absorbance and fluorescence spectroscopy [J].
Birdwell, Justin E. ;
Engel, Annette Summers .
ORGANIC GEOCHEMISTRY, 2010, 41 (03) :270-280
[5]   Real-time monitoring of nutrients and dissolved organic matter in rivers: Capturing event dynamics, technological opportunities and future directions [J].
Blaen, Phillip J. ;
Khamis, Kieran ;
Lloyd, Charlotte E. M. ;
Bradley, Chris ;
Hannah, David ;
Krause, Stefan .
SCIENCE OF THE TOTAL ENVIRONMENT, 2016, 569 :647-660
[6]   Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration-flow relationships [J].
Bowes, M. J. ;
Jarvie, H. P. ;
Halliday, S. J. ;
Skeffington, R. A. ;
Wade, A. J. ;
Loewenthal, M. ;
Gozzard, E. ;
Newman, J. R. ;
Palmer-Felgate, E. J. .
SCIENCE OF THE TOTAL ENVIRONMENT, 2015, 511 :608-620
[7]   Identifying priorities for nutrient mitigation using river concentration-flow relationships: The Thames basin, UK [J].
Bowes, Michael J. ;
Jarvie, Helen P. ;
Naden, Pamela S. ;
Old, Gareth H. ;
Scarlett, Peter M. ;
Roberts, Colin ;
Armstrong, Linda K. ;
Harman, Sarah A. ;
Wickham, Heather D. ;
Collins, Adrian L. .
JOURNAL OF HYDROLOGY, 2014, 517 :1-12
[8]  
BUFFLE J, 1982, Schweizerische Zeitschrift fuer Hydrologie, V44, P363, DOI 10.1007/BF02502298
[9]  
Carstea E.M., 2012, Water Pollution., V24, P1, DOI [10.5772/28979, DOI 10.5772/28979]
[10]   Continuous fluorescence excitation-emission matrix monitoring of river organic matter [J].
Carstea, Elfrida M. ;
Baker, Andy ;
Bieroza, Magdalena ;
Reynolds, Darren .
WATER RESEARCH, 2010, 44 (18) :5356-5366