US 12,405,218 B2
Method for the detection of nanoproducts
Athanasia Athanasiou, Genoa (IT); Fabio Boccuni, Monte Porzio Catone (IT); Sergio Iavicoli, Monte Porzio Catone (IT); and Paraskevi Papadopoulou, Genoa (IT)
Assigned to FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA, Genoa (IT); and INAIL—ISTITUTO NAZIONALE PER L'ASSICURAZIONE CONTRO GLI INFORTUNI SUL LAVORO, Rome (IT)
Appl. No. 18/549,282
Filed by FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA, Genoa (IT); and INAIL—ISTITUTO NAZIONALE PER L'ASSICURAZIONE CONTRO GLI INFORTUNI SUL LAVORO, Rome (IT)
PCT Filed Apr. 6, 2022, PCT No. PCT/IB2022/053211
§ 371(c)(1), (2) Date Sep. 6, 2023,
PCT Pub. No. WO2022/219461, PCT Pub. Date Oct. 20, 2022.
Claims priority of application No. 102021000009509 (IT), filed on Apr. 15, 2021.
Prior Publication US 2024/0159679 A1, May 16, 2024
Int. Cl. G01N 21/64 (2006.01); G01N 21/94 (2006.01)
CPC G01N 21/6489 (2013.01) [G01N 21/643 (2013.01); G01N 21/94 (2013.01); G01N 2021/6432 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for the detection of silica nanoparticles and/or graphene nanoplatelets in a sample, comprising the following steps:
a) providing a sensor comprising a substrate and carbon dots deposited on said substrate;
b) measuring the intrinsic photoluminescence intensity of said sensor with means adapted for such measurement;
c) bringing said sensor into contact with a sample to be analyzed for the possible presence of silica nanoparticles and/or graphene nanoplatelets;
d) measuring again the photoluminescence intensity of said sensor after having been in contact with said sample, and confirming the presence of silica nanoparticles and/or graphene nanoplatelets in the event of the quenching of said intrinsic photoluminescence of the sensor.