Organic microcontaminants in tomato crops irrigated with reclaimed water grown under field conditions: occurrence, uptake, and health risk assessment
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Martínez Piernas, Ana Belén; Plaza Bolaños, Patricia; Fernández Ibáñez, Pilar; Agüera López, Ana MaríaFecha
2019Resumen
In many regions, reuse of reclaimed water (RW) is a necessity for irrigation. The presence of organic microcontaminants (OMCs) in RW and their translocation to plants may represent a risk of human exposure. Nevertheless, information available about real field crops is scarce and focused on a limited number of compounds. The novelty of this work relies on the application of a wider-scope analytical approach based on a multianalyte target analysis (60 compounds) and a suspect screening (>1300 compounds). This methodology was applied to real field-grown tomato crops irrigated with RW. The study revealed the presence of 17 OMCs in leaves (0.04−32 ng/g) and 8 in fruits (0.01−1.1 ng/g), 5 of them not reported before in real field samples. A health-risk assessment, based on the toxicological threshold concern (TTC) concept, showed that RW irrigation applied under the conditions given does not pose any threat to humans.
Palabra/s clave
health risk assessment
lc-ms target
organic microcontaminants
plant uptake
reclaimed water reuse
suspect analysis