分子印迹聚合物
纳米传感器
检出限
碳量子点
荧光
量子点
猝灭(荧光)
聚合物
材料科学
线性范围
分子印迹
环境友好型
纳米技术
化学
色谱法
分析化学(期刊)
有机化学
选择性
物理
催化作用
生物
量子力学
生态学
作者
Marziyeh Poshteh Shirani,Behzad Rezaei,Ali A. Ensafi,Mohammad Ramezani
出处
期刊:Food Chemistry
[Elsevier]
日期:2020-08-27
卷期号:339: 127920-127920
被引量:67
标识
DOI:10.1016/j.foodchem.2020.127920
摘要
Rapid and efficient detection of indoxacarb (IXC), a common chemical contaminant, in environmental and biological samples is necessary. In this work, a modern optical sensor was developed for IXC, based on environmentally friendly molecularly imprinted polymer (MIP) coated on silica-carbon quantum dots (SiCQDs). A hydrothermal method was used to prepare highly fluorescence SiCQDs and, subsequently, MIP formed on surface ([email protected]) using a sol-gel method. A linear relationship between the fluorescence quenching effect and increased IXC concentration was found for the range of 4–102 nM, under the optimal conditions, with a 1 nM detection limit. Precisions was of 4.5 and 2.3% for five replicate detections at 21 and 60 nM IXC, respectively. Applicability of the sensor for IXC quantification in environmental and biological samples was verified with recoveries in the range 95–106% with a relative standard deviation of <6.0%.
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