| Autor: |
Ali, Suroosh S., Waghwani, Bhavishya B., Anjankar, Shubham, Kalambe, Jayu, Balpande, Suresh, Mondal, Puspen, Tiwari, Pragya, Rathee, Vishal |
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| Zdroj: |
Water, Air & Soil Pollution; Dec2021, Vol. 232 Issue 12, p1-16, 16p |
| Abstrakt: |
Monitoring of toxic contaminants is very important for the preservation of the environment. Arsenic contamination of drinking water is a major global problem. Its maximum contamination limit (MCL) in drinking water is 0.01 mg/l as per the World Health Organization (WHO) and 0.05 mg/l in absence of alternate sources as per the Bureau of Indian Standards (BIS) for drinking water. Cancer, diabetes, and cardiovascular problems are also linked to arsenic poisoning. In this work, a detection mechanism based on colorimetry, for detecting trivalent arsenic in water, is presented. Polydimethylsiloxane (PDMS)-based microfluidic channels are fabricated with the help of the x-ray lithography (XRL) technique. An embedded system is integrated to detect the concentration of arsenic within the range of 0.1 to 3.0 mol/l. The microfluidic system consists of a fluid handling setup, colorimetric data acquisition, and a Raspberry-Pi-based smart sensing platform. It was calibrated by placing it in a compact and rugged enclosure to nullify the lighting interference without compromising the accuracy. The detection limit was found out to be 0.07767 µg/l, and the detection time required was about 1 min/sample. This method has the potential to be developed as a rapid field kit. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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