Ag-Doped ZnO Quantum Dots for Fluorescence-Based Detection of Trace Cr(VI) from River Water and Fish samples.

Genet Aregay Shifera, Shimeles Addisu Kitte, Tamene Tadesse Beyene, Abera Gure

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Article in Journal of fluorescence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 authors.

Genet Aregay ShiferaCollege of Natural Sciences, Department of Chemistry, Jimma University, P. O. Box 378, Jimma, Ethiopia. genetaregay66@gmail.com.ORCID http://orcid.org/0009-0006-0827-6265

Shimeles Addisu KitteCollege of Natural Sciences, Department of Chemistry, Jimma University, P. O. Box 378, Jimma, Ethiopia.

Tamene Tadesse BeyeneCollege of Natural Sciences, Department of Chemistry, Jimma University, P. O. Box 378, Jimma, Ethiopia.

Abera GureCollege of Natural Sciences, Department of Chemistry, Jimma University, P. O. Box 378, Jimma, Ethiopia.

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6 · The paper itself

Abstract

The co-precipitation process was used to create silver-doped zinc oxide. Fluorescence spectrophotometry, XRD, FT-IR, BET, TGA, and UV-Vis were used to characterize it. When stimulated at 360 nm, the Ag/ZnO QDs displayed intense fluorescence emission at 508 nm and were highly selective for Cr(VI). A calibration curve was plotted for different concentration levels of Cr(VI) ranging from 0 to 12 mg/L, with an R² value of 0.998 and the LOD and LOQ at 3.2 µg/L and 11 µg/L, respectively. Three concentration levels, 0.8, 5.6, and 10.4 mg/L, were used to examine the precision of the devised approach; relative standard deviation values did not surpass 5.4%, showing good reproducibility. By adding known quantities of Cr(VI) to the water and fish samples, the method’s recovery was assessed; the results ranged from 77.5% to 112.5%. Ultimately, the suggested approach demonstrated outstanding sensitivity, selectivity, and repeatability for the detection of Cr(VI) in fish and water samples.

Indexed as

ChromiumFishesQuantum DotsRiversSilverWater Pollutants, ChemicalZinc OxideAnimalsFluorescenceSpectrometry, FluorescenceChromiumchromium hexavalent ionSilverWater Pollutants, ChemicalZinc OxideAg-doped ZnOCr(VI)Fluorescence detectionQuantum dotsWater and Fish samples

Identifiers

PMID41989539

DOI10.1007/s10895-026-04750-3

PMCPMC13226447

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