RT info:eu-repo/semantics/article
T1 Smart sensory polymer for straightforward Zn(II) detection in pet food samples
A1 Guirado Moreno, José Carlos
A1 González Ceballos, Lara
A1 Carreira Barral, Israel
A1 Ibeas Cortes, Saturnino
A1 Fernández Muiño, Miguel Ángel
A1 Sancho Ortiz, María Teresa
A1 García Pérez, José Miguel
A1 Vallejos Calzada, Saúl
K1 Zinc detection
K1 Zinc in food
K1 Sensory polymers
K1 Fluorescent probes
K1 RGB parameters
K1 Química orgánica
K1 Chemistry, Organic
K1 Alimentos
K1 Food
AB We report on an innovative method to measure the Zn(II) concentration in commercial pet food samples, both wet and dry food. It is based on a colorimetric sensory polymer prepared from commercial monomers and 0.5 % of a synthetic monomer having a quinoline sensory core (N-(8-(2-azidoacetamido)quinolin-5-yl)methacrylamide). We obtained the sensory polymer as crosslinked films by thermally initiated bulk radical polymerization of the monomers of 100 μm thickness, which we punched into Ø6 mm sensory discs. The immersion of the discs in water solutions containing Zn(II) turned the fluorescence on, allowing for the titration of this cation using the G parameter of a digital picture taken to the discs. The limits of detection and quantification were 29 and 87 µg/L, respectively. Furthermore, we measured the concentration of Zn(II) even in the presence of other cations, detecting no significant interferences. Thus, in a further step, we obtained the concentration of Zn(II) from 15 commercial pet food samples, ranging from 19 to 198 mg/kg, following a simple extraction procedure and contacting the extractant with our sensory discs. These results were contrasted with that obtained by ICP-MS as a reference method.
PB Elsevier
SN 1386-1425
YR 2023
FD 2023-01
LK http://hdl.handle.net/10259/7084
UL http://hdl.handle.net/10259/7084
LA eng
NO Spanish Agencia Estatal de Investigación (State Research Agency) (grant PID2020-113264RB-I00/AEI/10.13039/501100011033).
DS Repositorio Institucional de la Universidad de Burgos
RD 25-abr-2024