Abstract
Nowadays, arsenic (III) contamination of drinking water is a global issue. Laboratory and instrument-based techniques are typically used to detect arsenic in water, with an accuracy of 1 ppb. However, such detection methods require a laboratory-based environment, skilled labor, and additional costs for setup. As a result, several metal-based nanoparticles have been studied to prepare a cost-effective and straightforward detector for arsenic (III) ions. Among the developed strategies, colorimetric detection is one of the simplest methods to detect arsenic (III) in water. Several portable digital detection technologies make nanoparticle-based colorimetric detectors useful for on-site arsenic detection. The present review showcases several metal-based nanoparticles that can detect arsenic (III) colorimetrically at a concentration of ~0.12 ppb or lower in water. A literature survey suggests that biomolecule-based metal nanoparticles could serve as low-cost, facile, susceptible, and eco-friendly alternatives for detecting arsenic (III). This review also describes future directions, perspectives and challenges in developing this alternative technology, which will help us reach a new milestone in designing an effective arsenic detector for commercial use.
Highlights
200 million people worldwide are affected by arsenic toxicity [9]
According to the World Health Organization (WHO), arsenic in drinking water at a concentration of >10 ppb is highly unsafe to community health [10,11]
The results showed that CeO2 nanoparticles had improved performances compared to Fe3 O4, with the limit of detection (LOD) nearly 10-fold less than Fe3 O4 [76]
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Arsenic (III) concentrations in drinking water should be measured to avoid any harm to living organisms. Many detection methodologies have been adopted to measure arsenic levels in water steam, such as Raman spectroscopy (RS) [24], the fontal chromatography–ICP–MS method (FC–ICP–MS) [25], Toxics 2021, 9, 143. Chemisorbent resins provide a new apsufficient to detect arsenic. Gold nanoparticles, ticles, silver nanoparticles, metal-organic frameworks (MOFs), and metal graphene nanosilver nanoparticles, metal-organic frameworks (MOFs), and metal graphene nanocomcomposites are extensively employed to fabricate arsenic sensors [35,36,37,38,39,40,41,42]. This review summarizes nanoparticles for the colorimetric detection of arsenic (III) in water. This review summarizes the the sustainable, sustainable, cost-effective cost-effective and and efficient efficient strategies strategies for for arsenic arsenic sensing sensing to realize these sensors sensors in in the the real world
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