A simple yet effective colorimetric assay for nitrite based on nitration of a near-infrared (NIR) absorbing dye IR780

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dc.contributor.authorYilmaz, M. Deniz
dc.date.accessioned2024-02-23T14:13:17Z
dc.date.available2024-02-23T14:13:17Z
dc.date.issued2024
dc.departmentNEÜen_US
dc.description.abstractNitrite (NO2-) is a unique active ion involved in the nitrogen biochemical cycle which is very important to life on earth. Besides, it is indispensable additive to preserve nutrients in diverse food products. However, the concentrations above allowable limits pose considerable threat to human health and require urgent attention. In this study, we report a novel detection strategy by using IR780 dye as a near-infrared (NIR) probe which shows unexpected colorimetric response to NO2- ions with excellent selectivity, a rapid response (<5 s) and a low detection limit (227 nM). The probe produces the distinct color change from chartreuse to violet with a 220 nm of large hypsochromic (blue) shift caused by the nitration of IR780 in the presence of NO2- ions. Smartphone-based imaging has been further employed for real time and on-site visual detection of NO2- ions which will widen the application area of our system in environmental safety and food quality. In addition, the probe IR780 has shown excellent sensing performance in complex environments such as tap water and processed meat products with high recovery rates (85-113 %) and reproducibility (RSD < 5 %). Overall, the results demonstrate that the new system is capable of sensing NO2- ions in water resources as well as complex food matrices with high sensitivity and selectivity.en_US
dc.description.sponsorshipNecmettin Erbakan Universityen_US
dc.description.sponsorshipWe would like to thank Necmettin Erbakan University for their support of this research. We extend our gratitude to Necmettin Erbakan University BITAM-Science and Technology Research and Application Center for the use of the facilities.en_US
dc.identifier.doi10.1016/j.microc.2023.109554
dc.identifier.issn0026-265X
dc.identifier.issn1095-9149
dc.identifier.scopus2-s2.0-85175041008en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.microc.2023.109554
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12357
dc.identifier.volume196en_US
dc.identifier.wosWOS:001106735300001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofMicrochemical Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNitriteen_US
dc.subjectColorimetricen_US
dc.subjectSmart-Phone Imagingen_US
dc.subjectNear-Infrared Dyeen_US
dc.subjectFooden_US
dc.titleA simple yet effective colorimetric assay for nitrite based on nitration of a near-infrared (NIR) absorbing dye IR780en_US
dc.typeArticleen_US

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