Beitollahi Hadi, Tajik Somayeh
Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran,
Environ Monit Assess. 2015 May;187(5):257. doi: 10.1007/s10661-015-4506-6. Epub 2015 Apr 16.
A novel carbon paste electrode modified with graphene oxide nanosheets and an ionic liquid (n-hexyl-3-methylimidazolium hexafluoro phosphate) was fabricated. The electrochemical study of the modified electrode, as well as its efficiency for voltammetric oxidation of bisphenol A, is described. The electrode was also employed to study the electrochemical oxidation of bisphenol A, using cyclic voltammetry, chronoamperometry, square wave voltammetry and electrochemical impedance spectroscopy as diagnostic techniques. Square wave voltammetry exhibits a linear dynamic range from 9.0 × 10(-8) to 2.5 × 10(-4) M and a detection limit of 55.0 nM for bisphenol A. Finally, this new sensor was used for determination of bisphenol A in water samples using the standard addition method.
制备了一种用氧化石墨烯纳米片和离子液体（正己基-3-甲基咪唑六氟磷酸盐）修饰的新型碳糊电极。描述了修饰电极的电化学研究及其对双酚A伏安氧化的效率。该电极还用于研究双酚A的电化学氧化，采用循环伏安法、计时电流法、方波伏安法和电化学阻抗谱作为诊断技术。方波伏安法对双酚A的线性动态范围为9.0×10⁻⁸至2.5×10⁻⁴ M，检测限为55.0 nM。最后，使用标准加入法将这种新型传感器用于测定水样中的双酚A。
