BiOCl-SiO2 KIT-6 composite materials with raspberry-like structures are facilely prepared under hydrothermal conditions. The mesoporous siliceous support of SiO2 KIT-6-incorporated BiOCl with enlarged yet refined surface morphology characterized by physiochemical methods exhibits an improved electrochemical performance. A sensitive electrochemical detection method of cadmium concentration using square wave anodic stripping voltammetry was developed based on BiOCl-SiO2 KIT-6 composite-modified glassy carbon electrodes, which displayed wide linear ranges of 0.5 to 10 μg/L and 10 to 300 μg/L and a detection limit of 65 ng/L. The sensitive, versatile and eco-friendly sensor was successfully applied for the determination of cadmium-spiked human blood samples.
Exposure to lead in the environment and food poses severe threat to human health especially for the nervous and hemopoietic system, of which children are more vulnerable than adults. In this study, a sensitive detection platform aimed at the blood lead sample was developed based on BiOCl‐KIT‐6 composite materials modified glassy carbon electrode (BiOCl‐KIT‐6/GCE). The BiOCl‐KIT‐6 composites of varied molar ratio of Bi/Si with a litchi‐like surface structure are facilely prepared under hydrothermal conditions. The synthesized composites and modified electrode were characterized by a combination of physicochemical as well as electrochemical methods. Under optimized experimental conditions, square wave anodic stripping voltammetry (SWASV) was employed to determine the lead concentration using BiOCl‐KIT‐6/GCE, which exhibits a good electrochemical response to Pb (II) with linear calibration curves ranging from 0.2 to 10 and 10 to 300 μg/L and a detection limit of 33 ng/L. The constructed sensor was also successfully used for the electrochemical determination of lead‐spiked human blood sample with desirable accuracy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.