| Title |
Prioritization of organic contaminants in a reclaimed water irrigation system using wide-scope LC-HRMS screening |
| ID_Doc |
7600 |
| Authors |
García-Vara, M; Orlando-Véliz, D; Bonansea, RI; Postigo, C; de Alda, ML |
| Title |
Prioritization of organic contaminants in a reclaimed water irrigation system using wide-scope LC-HRMS screening |
| Year |
2023 |
| Published |
|
| DOI |
10.1016/j.jhazmat.2023.132119 |
| Abstract |
A prioritization procedure was developed and implemented at the 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 and fifty-eight CECs, including phar-maceuticals, 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 detecting site-specific priority pollutants that could otherwise be overlooked by national or Euro-pean regulations. The prioritization tool provided contributes to rationally designing monitoring and attenuation programs and efficiently managing water resources, by ensuring the safety of reclaimed water applications. |
| Author Keywords |
Contaminants of emerging concern; Non-target screening; Water reuse; Circular economy; Micropollutant; Water analysis; Agriculture; Ecotoxicological risk assessment |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001052901900001 |
| WoS Category |
Engineering, Environmental; Environmental Sciences |
| Research Area |
Engineering; Environmental Sciences & Ecology |
| PDF |
https://doi.org/10.1016/j.jhazmat.2023.132119
|