Tilen Švarc (Author), Peter Majerič (Author), Darja Jenko (Author), Žiga Jelen (Author), Matej Zadravec (Author), Timi Gomboc (Author), Rebeka Rudolf (Author)

Abstract

Lateral flow immunoassays (LFIAs) are a simple diagnostic device used to detect targeted analytes. Wasted and unused rapid antigen lateral flow immunoassays represent mass waste that needs to be broken down and recycled into new material components. The aim of this study was to recover gold nanoparticles that are used as markers in lateral flow immunoassays. For this purpose, a dissolution process with aqua regia was utilised, where gold nanoparticles were released from the lateral flow immunoassay conjugate pads. The obtained solution was then concentrated further with gold chloride salt (HAuCl4) so that it could be used for the synthesis of new gold nanoparticles in the process of ultrasonic spray pyrolysis (USP). Various characterisation methods including scanning electron microscopy, transmission electron microscopy, ultraviolet-visible spectroscopy and optical emission spectrometry with inductively coupled plasma were used during this study. The results of this study showed that the recovery of gold nanoparticles from lateral flow immunoassays is possible, and the newly synthesised gold nanoparticles represent the possibility for incorporation into new products.

Keywords

gold nanoparticles;recovery;LFIA;ultrasonic spray pyrolysis;characterisation;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: MDPI
UDC: 620.3:669.21
COBISS: 162504195 Link will open in a new window
ISSN: 1996-1944
Views: 25
Downloads: 12
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Other data

Secondary keywords: zlati nanodelci;predelava;ultrazvočna piroliza;karakterizacija;
Type (COBISS): Article
Source comment: Nasl. z nasl. zaslona; Opis vira z dne 29. 8. 2023;
Pages: str. 1-12
Volume: ǂVol. ǂ16
Issue: ǂiss. ǂ17
Chronology: 2023
DOI: 10.3390/ma16175770
ID: 22801332