RT Journal Article
T1 Bioaccumulation of titanium dioxide nanoparticles in green (Ulva sp.) and red (Palmaria palmata) seaweed
A1 López Mayán, Juan José
A1 Álvarez-Fernández, Blanca
A1 Peña Vázquez, Elena María
A1 Barciela Alonso, María Carmen
A1 Espiña, Begoña
A1 Moreda Piñeiro, Antonio
A1 Maguire, Julie
A1 Mackey, Mick
A1 Quarato, Monica
A1 Pinheiro, Ivone
A1 Espiña, Begoña
A1 Rodríguez-Lorenzo, Laura
A1 Bermejo Barrera, Pilar
K1 Bioaccumulation 
K1 Titanium dioxide nanoparticles 
K1 Seaweed 
K1 Alkaline extraction 
K1 Single particle inductively  coupled plasma mass spectrometry 
K1 Electron microscopy with energy dispersive X-ray analysis
AB A bioaccumulation study in red (Palmaria palmata) and green (Ulva sp.) seaweed has been carried out after exposure to different concentrations of citrate-coated titanium dioxide nanoparticles (5 and 25 nm) for 28 days. The concentration of total titanium and the number and size of accumulated nanoparticles in the seaweeds has been determined throughout the study by inductively coupled plasma mass spectrometry (ICP-MS) and single particle-ICP-MS (SP-ICP-MS), respectively. Ammonia was used as a reaction gas to minimize the effect of the interferences in the 48Ti determination by ICP-MS. Titanium concentrations measured in Ulva sp. were higher than those found in Palmaria palmata for the same exposure conditions. The maximum concentration of titanium (61.96 ± 15.49 μg g−1) was found in Ulva sp. after 28 days of exposure to 1.0 mg L−1 of 5 nm TiO2NPs. The concentration and sizes of TiO2NPs determined by SP-ICP-MS in alkaline seaweed extracts were similar for both seaweeds exposed to 5 and 25 nm TiO2NPs, which indicates that probably the element is accumulated in Ulva sp. mainly as ionic titanium or nanoparticles smaller than the limit of detection in size (27 nm). The implementation of TiO2NPs in Ulva sp. was confirmed by electron microscopy (TEM/STEM) in combination with energy dispersive X-Ray analysis (EDX)
PB Springer
SN 0026-3672
YR 2023
FD 2023-07-07
LK http://hdl.handle.net/10347/31259
UL http://hdl.handle.net/10347/31259
LA eng
NO Microchim Acta 190, 287 (2023)
NO The authors wish to thank the fnancial support of  Ministerio de Economía y Competitividad (project INNOVANANO, reference RT2018-099222-B-100), European Union (INTERREG Atlantic Area,  project NANOCULTURE, reference EAPA590/2018), and Xunta de Galicia  (Grupo de Referencia Competitiva, grant number ED431C 2022/29)
DS Minerva
RD 24 abr 2026