On-line carbon dots synthesis using flow injection analysis. Application to aluminium determination in water samples

URIARTE, DAMIÁN; GÓMEZ, NATALIA; CANALS, ANTONIO; DOMINI, CLAUDIA; GARRIDO, MARIANO

Talanta Open

Elsevier

Año: 2023

2666-8319

An on-line synthesis of CDots is proposed for the first time, using the flow injectionanalysis (FIA) technique, which was coupled, in a single system, to the analyticaldetermination of aluminium in water samples. The nanoparticles were obtained from thecarbonization of glucose and iron(III) in an acidic medium, and their photoluminescenceincreased in the presence of aluminium ions. Under optimal experimental conditions,the proposed method has shown an acceptable linearity range –between 0.04 and 3.0 mgL-1 (R2 = 0.9999) – and a detection limit of 0.007 mg L-1. The analysis of drinking waterand groundwater samples showed good accuracy (recoveries ranged between 91 –113%) and RSD% < 13. The on-line system exhibited a high sample throughput (36 h-1), since no incubation time was required.