Green and facile synthesis of water-soluble carbon dots from ethanolic shallot extract for chromium ion sensing in milk, fruit juices, and wastewater samples
Chinawooth Sakaew, Phitchan Sricharoen, Nunticha Limchoowong, Prawit Nuengmatcha, Chunyapuk Kukusamude, Supalak Kongsri, Saksit Chanthai
Abstract
as the set-zero intercept linear equation, 0.9981 as the correlation coefficient, 3.5 μM as the limit of detection (LOD), 11.7 μM as the limit of quantification (LOQ), and 2.78% and 5.29% as the intra-day and inter-day relative standard deviations (RSD), respectively. The recovery of drinking water, milk, soymilk, fruit juices (apple and coconut), tap water, and chromium-coated industrial waste water by the investigated Cr sensor was found to be 78.58-119.69%. Therefore, the proposed Cr(vi) sensor had superior advantages of sensitivity, selectivity, rapidity, and reproducibility.
Topics & Concepts
ChemistryDetection limitTap waterChromiumSelectivityWastewaterSolventNuclear chemistryCorrelation coefficientChromatographyOrganic chemistryEnvironmental engineeringMathematicsEngineeringCatalysisStatisticsCarbon and Quantum Dots ApplicationsNanocluster Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis