Smartphone-enabled field monitoring tool for rapid hexavalent chromium detection in water
| Autor: | Mainak Bhattacharya, Aditya Shekhar, Ishan Gupta, Pradeep L Balkunde, Abhas Singh, Ashwini Mohapatra, Vinod Bhojwani, Sushant D Bamane |
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| Rok vydání: | 2021 |
| Předmět: |
Detection limit
business.industry 010401 analytical chemistry Analytical technique chemistry.chemical_element 02 engineering and technology Contamination 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Analytical Chemistry Chromium chemistry.chemical_compound Diphenylcarbazide chemistry Linear range Environmental science Water quality Hexavalent chromium 0210 nano-technology Process engineering business |
| Zdroj: | Analytical and Bioanalytical Chemistry. 413:3455-3469 |
| ISSN: | 1618-2650 1618-2642 |
| DOI: | 10.1007/s00216-021-03291-x |
| Popis: | Chromium contamination of soil and water is a serious environmental and public health concern as the hexavalent form of chromium [Cr(VI)] is readily soluble in water and is a confirmed carcinogen. There is an imminent need for a robust, low-cost, and simple analytical technique to facilitate in situ monitoring of Cr(VI) in water. Current quantitative methods of Cr(VI) detection are largely laboratory-based, time-consuming, expensive, and require training for implementation. In this contribution, a portable, easy-to-use, and compact measuring tool is presented that provides Cr(VI) concentration within 10 min of water sampling over a linear range of 0–3 mg L−1. This tool utilizes a relatively inexpensive camera-enabled smartphone with a custom-made test chamber attachment to seamlessly perform Cr(VI) measurements on water samples in the field. For analysis, an android-based software application was developed that directs the user to perform a simple series of steps following the diphenylcarbazide-based colorimetric method prescribed by the American Public Health Association. The tool was validated against a standard UV-visible spectrophotometer for a variety of synthetic and naturally contaminated water samples, with correlation factors greater than 0.993 (p |
| Databáze: | OpenAIRE |
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