title: A Zinc Oxide Nanoflower-Based Electrochemical Sensor for Trace Detection of Sunset Yellow.
abstract: Zinc oxide nanoflower (ZnONF) was synthesized by a simple process and was used to construct a highly sensitive electrochemical sensor for the detection of sunset yellow (SY). Due to the large surface area and high accumulation efficiency of ZnONF, the ZnONF-modified carbon paste electrode (ZnONF/CPE) showed a strong enhancement effect on the electrochemical oxidation of SY. The electrochemical behaviors of SY were investigated using voltammetry with the ZnONF-based sensor. The optimized parameters included the amount of ZnONF, the accumulation time, and the pH value. Under optimal conditions, the oxidation peak current was linearly proportional to SY concentration in the range of 0.50-10 μg/L and 10-70 μg/L, while the detection limit was 0.10 μg/L (signal-to-noise ratio = 3). The proposed method was used to determine the amount of SY in soft drinks with recoveries of 97.5%-103%, and the results were in good agreement with the results obtained by high-performance liquid chromatography.
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. yayu1026@163.com.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. yayu1026@163.com.
authors.forename: Yu
authors.initials: Y
authors.lastname: Ya
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. 18376767532@163.com.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. 18376767532@163.com.
authors.forename: Cuiwen
authors.initials: C
authors.lastname: Jiang
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. 18260965051@163.com.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. 18260965051@163.com.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. liao_jie1997@163.com.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. liao_jie1997@163.com.
authors.forename: Jie
authors.initials: J
authors.lastname: Liao
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. fanyegeng@163.com.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. fanyegeng@163.com.
authors.forename: Yegeng
authors.initials: Y
authors.lastname: Fan
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. wyun2015@gxaas.net.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. wyun2015@gxaas.net.
authors.forename: Yuning
authors.initials: Y
authors.lastname: Wei
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. yanfeiyan2014@126.com.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. yanfeiyan2014@126.com.
authors.forename: Feiyan
authors.initials: F
authors.lastname: Yan
authors.affiliation: Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China. xieliping@gxaas.net.|Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China. xieliping@gxaas.net.
authors.forename: Liping
authors.initials: L
authors.lastname: Xie
keywords: electrochemical sensor; sunset yellow; trace detection; zinc oxide nanoflower