Detection of di(2-ethylhexyl) phthalate in edible vegetable oils using a sensitive aptasensor based on carbon nanomaterials and copper metal-organic framework
文献类型: 外文期刊
作者: Zhao, Zimo 1 ; Cai, Da 1 ; Shao, Yangyang 1 ; Tian, Jie 4 ; Wang, Lei 1 ; Dong, Yanjie 1 ;
作者机构: 1.Shandong Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Jinan, Shandong, Peoples R China
2.Shandong Prov Key Lab Test Technol Food Qual & Saf, Jinan, Shandong, Peoples R China
3.Univ Melbourne, Coll Vet & Agr Sci, Melbourne, Australia
4.Jinan Agr Technol Extens & Serv Ctr, Jinan, Shandong, Peoples R China
关键词: Aptasensor; Polyaniline multi-walled carbon nanotubes; Copper metal-organic framework; Di(2-ethylhexyl) phthalate; Edible vegetable oils
期刊名称:JOURNAL OF FOOD COMPOSITION AND ANALYSIS ( 影响因子:4.3; 五年影响因子:4.6 )
ISSN: 0889-1575
年卷期: 2023 年 123 卷
页码:
收录情况: SCI
摘要: In this work, we designed a simple, disposable, highly sensitive electrochemical aptasensor to detect di(2ethylhexyl) phthalate (DEHP) in edible vegetable oils. The aptasensor was created by decorating polyaniline multi-walled carbon nanotubes (PANI-MWCNTs), Cu metal-organic framework (CuMOF), and gold nanoparticles (AuNPs) on a screen printing carbon electrode (SPCE). With its large surface area, CuMOF modified the electrode by improving the adhesion rate of gold nanoparticles, thereby improving the detection limit of the sensor. The distinct peak in the square wave voltammetry (SWV) was used to measure DEHP. The sensor had high stability, excellent repeatability, reproducibility, and specificity, with a wide linear range (0.1-100 ng/mL) and a low detection limit (0.03 ng/mL). When the aptasensor was used to analyze the DEHP content in edible vegetable oils, the recovery rate was between 95.11 % and 98.29 %, and the results were consistent with the GC-MS measurements.
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