Cristina Postigo

Universidad de Granada

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Miren López de Alda

Institute of Environmental Assessment and Water Research

‪B

‪Damià Barceló

University of Almería

Ester López‐García

Institut Català de Ciències del Clima

Lubertus Bijlsma

Universitat Jaume I

Félix Hernández

Universitat Jaume I

Rosario Rodil

Universidade de Santiago de Compostela

Iria González‐Mariño

Universidad de Salamanca

Susan D. Richardson

University of South Carolina

Rosa Montes

Universidade de Santiago de Compostela

Yolanda Picó

Universitat de València

Cooperative Institutions

Consejo Superior de Investigaciones Científicas

Institute of Environmental Assessment and Water Research

Catalan Institute for Water Research

University of Girona

Instituto de Investigaciones Químicas y Ambientales de Barcelona

Universitat Autònoma de Barcelona

Universitat de Barcelona

Universidade de Santiago de Compostela

Environmental Protection Agency

University of Queensland

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Prioritization of the Most Relevant Organic Contaminants in a Reclaimed Water Irrigation System Through an Lc-Ms/Hrms-Based Suspect Screening Workflow

García-Vara Manuel Orlando-Véliz Dana Bonansea Rocío Cristina Postigo Miren López de Alda

A prioritization procedure was developed and implemented at local level to identify the most relevant organic contaminants of emerging concern (CECs) in an agricultural area irrigated with reclaimed water. A wide-scope screening methodology based on UPLC-HRMS analysis was applied to holistically characterize the CEC footprint in water and its spatial and temporal variations. One hundred sixty-two CECs, including pharmaceuticals, industrial chemicals, and pesticides, among others, were identified with a confidence level of 2 in the water samples investigated. After water treatment in the reclamation plant and transport within the irrigation channel network, more than a hundred compounds were still detected at the location where water is abstracted for crop irrigation. Compound ecotoxicity and occurrence (semi-quantified concentrations or peak intensity) were the parameters used to prioritize CECs in the water used for irrigation. Results pointed at venlafaxine, O-desmethyl-venlafaxine, galaxolidone, theophylline/paraxanthine, oxybenzone, and N-phenyl-1-naphtylamine, among others, as CECs of concern in the investigated area. This study provides a simple and cost-effective approach to detect site-specific priority pollutants that could be otherwise overlooked by national or European regulations. The prioritization tool provided contributes to rationally design monitoring and attenuation programs and efficiently manage water resources, by ensuring the safety of reclaimed water applications.

Prioritization

Reclaimed water

Suspect

10.2139/ssrn.4409396

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Improved fully automated method for the determination of medium to highly polar pesticides in surface and groundwater and application in two distinct agriculture-impacted areas.

The Science of The Total Environment (2020)

Maria Vittoria Barbieri Luis Simón Monllor-Alcaraz Cristina Postigo Miren López de Alda

10.1016/j.scitotenv.2020.140650

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Citations (23)

Groundwater Pollution: Sources, Mechanisms, and Prevention

Elsevier eBooks (2017)

Cristina Postigo Daniel Martínez Sebastián Grondona Karina S.B. Miglioranza

Groundwater Contamination

Groundwater Pollution

Contaminated groundwater

10.1016/b978-0-12-809665-9.09880-3

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Citations (28)

Antibiotics in the Basque Coast (N Spain): Occurrence in Water and Risk Assessment (2017-2020)

SSRN Electronic Journal (2022)

Oihana Solaun José Germán Rodríguez Ángel Borja Ester López‐García Božo Žonja

The study of the presence of antibiotics in the aquatic environment is a preliminary step to analyse their possible harmful effects on aquatic ecosystems. In order to monitor their occurrence in the aquatic environment, the European Commission established in 2015, 2018, and 2020 three Watch Lists of substances for Union-wide monitoring in the field of water policy (Decisions (EU) 2015/495, 2018/840, and 2020/1161), where some antibiotics were included.In the Basque coast, northern Spain, three macrolide antibiotics (erythromycin, clarithromycin, azithromycin) and ciprofloxacin were monitored quarterly from 2017 to 2020 (covering a period before and after the COVID19 outbreak), in water samples collected from two Waste Water Treatment Plants (WWTPs), and three control points associated with receiving waters (transitional and coastal water bodies). This work was undertaken for the Basque Water Agency (URA).The three macrolide antibiotics in water showed a frequency of quantification >65% in the Basque coast, with higher concentrations in the WWTP emission stations than in receiving waters. Their frequency of quantification decreased from 2017 to 2020, as did the consumption of antibiotics in Spanish primary care since 2015. Ciprofloxacin showed higher frequencies of quantification in receiving waters than in wastewaters, but the highest concentrations were observed in the WWTP emission stations. Although consumption of fluoroquinolones (among which is ciprofloxacin) in primary care in the Basque Country has decreased in recent years, this trend was not observed in the waters sampled in the present study. On the other hand, concentrations of clarithromycin, azithromycin, and ciprofloxacin in receiving waters exceeded their respective Predicted No-Effect Concentrations, so they could pose an environmental risk. These substances are widely used in human and animal medicine, so, although only ciprofloxacin is included in the third Watch List, it would be advisable to continue monitoring macrolides in the Basque coast as well.

10.2139/ssrn.4069785

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Pesticides in sediments of the Ebro River Delta cultivated area (NE Spain): Occurrence and risk assessment for aquatic organisms

Environmental Pollution (2022)

Andrea Peris Maria Vittoria Barbieri Cristina Postigo Maria Rambla-Alegre Miren López de Alda

Intense agricultural activities are performed in the Ebro River Delta (NE Spain) with extensive use of pesticides. Medium to highly polar pesticides have not been studied intensively in sediments despite its larger use in the recent years. This work aimed at assessing the occurrence of 69 pesticides, including medium to highly polar compounds, in sediments collected from drainage and irrigation channels of the Ebro River Delta during the main rice growing season. In addition, an environmental risk assessment was performed to evaluate the potential adverse effects to sediment-dwelling organisms with the risk quotient approach. A total of 24 pesticides were detected in sediments with bentazone and cypermethrin exhibiting high detection frequencies (79%) as well as high mean concentration levels (61.9 and 81.8 ng g-1 dw, respectively). Overall, the Alfacs bay, in the South of the delta, presented higher pesticide contamination than the Fangar bay, in the North. A similar pesticide distribution profile was observed in both bays, with oxadiazoles, organochlorines, pyrethroids, benzothiazinones and organophosphates as major, predominant classes. The presence of oxadiazon, pendimethalin and thifensulfuron methyl in the sediments may pose a moderate risk to sediment-dwelling organisms while bentazone, chlorpyrifos, and cypermethrin exhibited a potential high risk. Thus, the importance of the inclusion of medium to highly polar pesticides in the analysis of sediments is emphasized since some polar pesticides such as bentazone, imidacloprid, and thifensulfuron-methyl have been detected at concentrations that may pose a risk to aquatic organisms. Moreover, the co-occurrence of pesticides may potentially pose a high risk to sediment-dwelling organisms in 13 out of the 14 investigated locations. Finally, it could be concluded that the risk derived from the presence of pesticides in sediments must be assessed since some pesticides not detected at concerning levels in water, may pose a moderate/high risk in the sediments.

10.1016/j.envpol.2022.119239

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Citations (40)

Illicit drug consumption estimations derived from wastewater analysis: A critical review

The Science of The Total Environment (2010)

Alexander L.N. van Nuijs Sara Castiglioni Isabela Ţârcomnicu Cristina Postigo Miren López de Alda

Illicit drug

Consumption

10.1016/j.scitotenv.2010.05.030

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Citations (388)

Drinking Water Disinfection By-products