Voltammetric determination of TBHQ anti-oxidant using nanostructure sensors in food samples
محل انتشار: نهمین همایش سراسری کشاورزی و منابع طبیعی پایدار
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 324
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شناسه ملی سند علمی:
SENACONF09_083
تاریخ نمایه سازی: 12 شهریور 1398
چکیده مقاله:
simple and rapid analytical method development for Tert-butylhydroquinone (TBHQ)determination infood samples by using different voltametric techniques such as cyclic voltametry (CV), choronoAmprometry (CA), differencial pulse voltametry (DPV) on ZnO/CNTs nanocomposite ionic liquidmodified carbon paste electrode. For this, several parameters,such as ZnO/CNTs nanocomposite, ionicliquid ratio,and pH, scan rate, diffiusion index and the others have been studied. The cyclicvoltammogram showed an irreversible oxidation peak at 0.2 V (vs.Ag/AgClsat), which corresponded tothe oxidation of TBHQ.Compared to common carbon paste electrode, the electrochemical response wasgreatly improved. Under the optimizedconditions, the oxidation peak current of TBHQ showed lineardynamic range 0.09–750 μmol l−1 with a detectionlimit of 0.05 μmol l−1, using the differencial pulsevoltamrty method. The proposed sensor was successfully applied to the determination of TBHQ in oil andoil samples with previous preparation and was compared with a published electrochemical method, finallystatistic analysis confirm the high sensivity and good selectivity of sensor.
کلیدواژه ها:
Food sample analysis . Tert-butylhydroquinone. Voltammetry . Ionic liquid .ZnO/CNTs nanocomposite
نویسندگان
Kebria Sajjadi
Department of Food Science and Technology, Ayatollah Amoli Branch, Islamic Azad niversity, amol, Iran
Ahmad Shahidi
Department of Food Science and Technology, Ayatollah Amoli Branch, Islamic Azad niversity, amol, Iran
Majedeh Bijad
Department of Agriculture, Sari Branch, Islamic Azad University, Sari, Iran