Progress in the design of portable colorimetric chemical sensing devices.
Tushar KantKallol K GhoshAnkita TejwaniKhushali TandeyAnuradha SharmaShashi GuptaPublished in: Nanoscale (2023)
The need for precise determination of heavy metals, anions, biomolecules, pesticides, drugs, and other substances is vital across clinical, environmental, and food safety domains. Recent years have seen significant progress in portable colorimetric chemical sensing devices, revolutionizing on-the-spot analysis. This review offers a comprehensive overview of these advancements, covering handheld colorimetry, RGB-based colorimetry, paper-based colorimetry, and wearable colorimetry devices. It explores the underlying principles, functional materials (chromophoric reagents/dyes and nanoparticles), detection mechanisms, and their applications in environmental monitoring, clinical care, and food safety. Noble metal nanoparticles (NPs) have arisen as promising substitutes in the realm of sensing materials. They display notable advantages, including heightened sensitivity, the ability to fine-tune their plasmonic characteristics for improved selectivity, and the capacity to induce visible color changes, and simplifying detection. Integration of NPs fabricated paper device with smartphones and wearables facilitates reagent-free, cost-effective, and portable colorimetric sensing, enabling real-time analysis and remote monitoring.
Keyphrases
- gold nanoparticles
- label free
- heavy metals
- hydrogen peroxide
- human health
- risk assessment
- sensitive detection
- fluorescent probe
- living cells
- loop mediated isothermal amplification
- aqueous solution
- palliative care
- mass spectrometry
- heart rate
- ionic liquid
- nitric oxide
- solid phase extraction
- health risk
- energy transfer
- health insurance
- sewage sludge