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Article

Development of Selenium Nanoparticle Based Agriculture Sensor for Heavy Metal Toxicity Detection

1
Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
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Department of Applied Physics, Aligarh Muslim University, Aligarh 202002, India
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Physics Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
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Department of Physics, School of Engineering, University of Petroleum & Energy Studies, Dehradun 248007, India
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Department of Basic Sciences, Preparatory Year Deanship, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
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Department of Food Science and Nutrition, King Saud University, Riyadh 11451, Saudi Arabia
*
Author to whom correspondence should be addressed.
Agriculture 2020, 10(12), 610; https://doi.org/10.3390/agriculture10120610
Received: 16 October 2020 / Revised: 27 November 2020 / Accepted: 3 December 2020 / Published: 8 December 2020
(This article belongs to the Special Issue Bioremediation in Agricultural and Urban Soils)
The presence of heavy metals in increased concentrations in the environment has become a global environmental concern. This rapid increase in heavy metals in the environment is attributed to enhanced industrial and mining activities. Metal ions possess a lengthy half-life and property to bioaccumulate, are non-biodegradable and, thus, are a threat to the human health. A number of conventional spectroscopic and chromatographic techniques are being used for the detection of heavy metals, but these suffer from various limitations. Nano-based sensors have emerged as potential candidates for the sensitive and selective detection of heavy metals. Thus, the present study was focused on the synthesis of selenium nanoparticles (SeNPs) by using selenite-reducing bacteria in the development of a heavy metal toxicity biosensor. During the biosynthesis of selenium nanoparticles, supernatants of the overnight-grown culture were treated with Na2SeO32 and incubated for 24 h at 37 °C. The as-synthesized nanoparticles were characterized by UV–Vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR) and transmission electron microscopy (TEM) analyses. XRD and TEM results confirmed the formation of SeNPs in sizes ranging from 35 to 40 nm, with face-centered cubic (FCC) structures. The bioreduction process and validation of the formation of SeNPs was further confirmed by FTIR studies. The reduction in the biosynthesis of SeNPs using bacterial metabolite due to heavy metal cytotoxicity was analyzed by the colorimetric bioassay (SE Assay). The inhibition of selenite reduction and loss of red color in the presence of heavy metals may serve as a biosensor for heavy metal toxicity analysis. Thus, this biosensor development is aimed at improving the sensitivity and specificity of analytic detection. View Full-Text
Keywords: biosynthesis; heavy metal toxicity; fluorescence; nano-biosensor; XRD biosynthesis; heavy metal toxicity; fluorescence; nano-biosensor; XRD
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MDPI and ACS Style

Ahmed, F.; Dwivedi, S.; Shaalan, N.M.; Kumar, S.; Arshi, N.; Alshoaibi, A.; Husain, F.M. Development of Selenium Nanoparticle Based Agriculture Sensor for Heavy Metal Toxicity Detection. Agriculture 2020, 10, 610. https://doi.org/10.3390/agriculture10120610

AMA Style

Ahmed F, Dwivedi S, Shaalan NM, Kumar S, Arshi N, Alshoaibi A, Husain FM. Development of Selenium Nanoparticle Based Agriculture Sensor for Heavy Metal Toxicity Detection. Agriculture. 2020; 10(12):610. https://doi.org/10.3390/agriculture10120610

Chicago/Turabian Style

Ahmed, Faheem, Sourabh Dwivedi, Nagih M. Shaalan, Shalendra Kumar, Nishat Arshi, Adil Alshoaibi, and Fohad M. Husain 2020. "Development of Selenium Nanoparticle Based Agriculture Sensor for Heavy Metal Toxicity Detection" Agriculture 10, no. 12: 610. https://doi.org/10.3390/agriculture10120610

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