| Autor: |
Fuentes-Rivas RM; Geography Department, Autonomous University of the State of Mexico, Cerro de Coatepec s/n Ciudad Universitaria, 50110, Toluca, Estado de México, Mexico.; Applied Geosciences Division, Potosin Institute of Scientific and Technological Research, C.A. (IPICYT), Camino a la Presa San José # 2055, Lomas 4a, Sección, C.P. 78216, San Luis Potosi, San Luís Potosí, Mexico., Martínez-Alva G; Medicine Department, Autonomous University of the State of Mexico, Tollocan esquina Jesús Carranza S/N, 50180, Toluca, Estado de México, Mexico., Ramos-Leal JA; Applied Geosciences Division, Potosin Institute of Scientific and Technological Research, C.A. (IPICYT), Camino a la Presa San José # 2055, Lomas 4a, Sección, C.P. 78216, San Luis Potosi, San Luís Potosí, Mexico., de León GSC; Water and Society Program, College of San Luis C. A. (COLSAN), Parque de Macul 155, Colinas del Parque, C.P. 78294, San Luis Potosí, Mexico., Moran-Ramírez J; Institute of Geophysics, National Autonomous University of Mexico, Ciudad Universitaria, Coyoacán, Cd. Mx, 04150, Mexico, Mexico., de Oca RMGF; Inter-American Institute of Technology and Water Sciences, Autonomous University of the State of Mexico, Carretera Toluca Atlacomulco Km 14.5, Unidad San Cayetano, 50200, Toluca, Estado de México, Mexico. mgfonsecam@uaemex.mx. |
| Abstrakt: |
The use of wastewater for agricultural irrigation is a common practice worldwide; long-term use of wastewater can have adverse effects, such as the migration of the anthropogenic dissolved organic matter into the aquifer. Three-dimensional fluorescence spectroscopy (EEM) was used to investigate the characteristics of dissolved organic matter (DOM) in groundwater and irrigation wastewater, to establish the effect of intensive irrigation on the water quality from the aquifer that underlies the area. The fluorescence spectra showed the presence of humic and fulvic acids and anthropogenic organic compounds similar to aromatic proteins and soluble microbial products in wastewater resources. The significant fraction of DOM in groundwater samples are aromatic proteins and soluble microbial products, identical to wastewater. Chlorides and nitrate ion concentrations suggest a local flow system. High levels of TDS are associated with intensive irrigation with residual water and the return irrigation associated with a gradual increase in salts of CO 3 2- , NO 3 - , HCO 3 - , Cl - , and SO 4 2- . The anthropogenic DOM is a useful indicator of water quality management in groundwater based on origin tracking of DOM and changes in organic pollutants. Fluorescence spectroscopy can be used to investigate groundwater pollution characteristics and monitor DOM dynamics in groundwater. |
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