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• W2648290552 abstract "In this study, we developed a novel composite material containing biological macromolecules like heparin and chitosan coated on reduced graphene oxide (rGO) for the modification of glassy carbon electrode (hep/CS-rGO/GC). It can be applied for the sensitive electrochemical detection of Pb2+ by square wave anodic stripping voltammetry (SWASV). The physicochemical analysis such as XRD, FTIR, FESEM and Raman spectroscopy techniques revealed that an effective functionalization occurred at the rGO surface. The consequence of deposition and stripping of metal ions by various electrochemical parameters such as supporting electrolytes, pH value, deposition potential, and deposition time were carefully studied and optimized. Under the optimized conditions, the linear calibration curve was calculated to be from 1.125 to 8.25 μg L−1 for Pb2+ with the correlation coefficient (R2) 0.9988. The detection limit and sensitivity achieved for the modified electrode were 0.03 μg L−1 and 1.34 μA/nM respectively. Furthermore, the electrochemical investigation indicates that the hep/CS-rGO composite electrode exhibits high selectivity, strong adherence to the electrode surface, good stability and reproducibility towards the detection of Pb2+. Finally, hep/CS-rGO/GC electrode was assessed by the quantity of Pb2+ present in the practical samples, and the determined results were consistent with that of AAS." @default.
• W2648290552 created "2017-06-30" @default.
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• W2648290552 date "2017-11-01" @default.
• W2648290552 modified "2023-10-14" @default.
• W2648290552 title "Electrochemical behavior of Pb (II) on a heparin modified chitosan/graphene nanocomposite film coated glassy carbon electrode and its sensitive detection" @default.
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• W2648290552 doi "https://doi.org/10.1016/j.ijbiomac.2017.06.082" @default.
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