Gold nanozyme-based paper chip for colorimetric detection of mercuryions
| Autor: | Jong-Soon Choi, Kwi Nam Han, Joseph Kwon |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Multidisciplinary
Materials science Science Mercury pollution Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Chip 01 natural sciences Article 0104 chemical sciences Field monitoring Ion Mercury (element) Highly sensitive Tap water chemistry Colloidal gold Medicine 0210 nano-technology |
| Zdroj: | SCIENTIFIC REPORTS(7) Scientific Reports Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017) |
| Popis: | In this study, we developed a facile gold nanozyme-based paper chip (AuNZ-PAD) for Hg2+ detection. This device has the advantages of being simple, rapid, cost effective, sensitive, selective, high throughput, and applicable to onsite detection. The colorimetric mercury assay on the AuNZ-PAD is established based on the enzyme-like catalytic activity of gold nanoparticles promoted by the formation of Au–Hg amalgam, which is correlated to the intensity of the colorimetric response resulting from the catalytic reaction of 3,3′,5,5′-tetramethylbenzidine (TMB) and H2O2. Highly sensitive and selective detection of Hg2+ ions is achieved in both distilled and tap water samples, indicating the feasibility and applicability of our device for the determination of mercury pollution in real samples. Moreover, AuNZ-PAD analysis using a smartphone camera eliminates the need for expensive analytical equipment, thereby increasing the practicality of field monitoring of trace Hg2+ compared with other sensing methods. |
| Databáze: | OpenAIRE |
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