Dual-mode colorimetric determination of As(III) based on negatively-charged aptamer-mediated aggregation of positively-charged AuNPs

The aggregation and redispersion of positively-charged AuNPs ((+)AuNPs) modified with cysteamine (CS) could be regulated by the negatively charged As(III)-specific aptamer (As(III)-apt). In general, (+)AuNPs aggregated with increasing inducer concentration. However, in the present study, it was foun...

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Veröffentlicht in:	Analytica chimica acta 2022-08, Vol.1221, p.340111-340111, Article 340111
Hauptverfasser:	Zhang, Dongwei, Chu, Shaohua, Wang, Lumei, Zhan, Xuejia, Zhou, Pei, Zhang, Dan
Format:	Artikel
Sprache:	eng
Schlagworte:	Aptasensor Arsenic Colorimetry Heavy metal Positively-charged AuNPs
Online-Zugang:	Volltext
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