RT Journal Article
T1 Magnetic nanostructures for marine and freshwater toxins removal
A1 González Jartín, Jesús María
A1 Alves, Lisandra Cristina de Castro
A1 Alfonso Rancaño, María Amparo
A1 Piñeiro Redondo, Yolanda
A1 Yáñez Vilar, Susana
A1 Rodríguez, Inés
A1 González Gómez, Manuel Antonio
A1 Vargas Osorio, Zulema
A1 Sáinz Oses, María Jesús
A1 Rodríguez Vieytes, Mercedes
A1 Rivas Rey, José
A1 Botana López, Luis Miguel
K1 Phycotoxin
K1 Cyanotoxin
K1 Detoxification
K1 Mitigation
K1 Nanomaterials
AB Marine and freshwater toxins contaminate water resources, shellfish and aquaculture products, causing a broad range of toxic effects in humans and animals. Different core-shell nanoparticles were tested as a new sorbent for removing marine and freshwater toxins from liquid media. Water solutions were contaminated with 20 μg/L of marine toxins and up to 50 μg/L of freshwater toxins and subsequently treated with 250 or 125 mg/L of nanoparticles. Under these conditions, carbon nanoparticles removed around 70% of saxitoxins, spirolides, and azaspiracids, and up to 38% of diarrheic shellfish poisoning toxins. In the case of freshwater toxins, the 85% of microcystin LR was eliminated; other cyclic peptide toxins were also removed in a high percentage. Marine toxins were adsorbed in the first 5 min of contact, while for freshwater toxins it was necessary 60 min to reach the maximum adsorption. Toxins were recovered by extraction from nanoparticles with different solvents. Gymnodinium catenatum, Prorocentrum lima, and Microcystis aeruginosa cultures were employed to test the ability of nanoparticles to adsorb toxins in a real environment, and the same efficacy to remove toxins was observed in these conditions. These results suggest the possibility of using the nanotechnology in the treatment of contaminated water or in chemical analysis applications.
PB Elsevier
SN 1879-1298
YR 2020
FD 2020-10
LK https://hdl.handle.net/10347/44584
UL https://hdl.handle.net/10347/44584
LA eng
NO Chemosphere Volume 256, October 2020, 127019
NO The research leading to these results has received funding from the following FEDER cofunded-grants. From Conselleria de Cultura, Educacion e Ordenación Universitaria, Xunta de Galicia, 2017 GRC GI-1682 (ED431C 2017/01) and the Strategic Grouping in Materials (AEMAT)/Grant No. ED431E2018/08. From CDTI and Technological Funds, supported by Ministerio de Economía, Industria y Competitividad, AGL2016-78728-R (AEI/FEDER, UE), ISCIII/PI16/01830 and RTC-2016-5507-2, ITC-20161072. From European Union POCTEP 0161-Nanoeaters -1-E-1, Interreg AlertoxNet EAPA-317-2016, Interreg Agritox EAPA-998-2018, and H2020 778069-EMERTOX. Jesús M. González-Jartín was supported by a fellowship from Programa de Formación de Profesorado Universitario (FPU14/00166), Ministerio de Educación, Cultura y Deporte, Spain.
DS Minerva
RD 18 abr 2026