Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran.
Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, 76175-133, Iran.
Food Chem Toxicol. 2022 Mar;161:112824. doi: 10.1016/j.fct.2022.112824. Epub 2022 Jan 31.
This study utilized a facile one-pot protocol to synthesize Ni-cobalt zeolitic imidazolate framework (Ni-ZIF-67) nanocomposite, which was then characterized by Fourier transform infrared spectroscopy, X-ray diffraction, energy dispersive X-ray spectroscopy and scanning electron microscopy. The Ni-ZIF-67 nanocomposite was subsequently applied to modify a screen-printed electrode (SPE) as a durable sensor for detection of Sudan I concomitantly with bisphenol A (BPA), with remarkably increased electrochemical response when comparing with a bare SPE. The results showed the calibration plot to be linear in the concentration range between 0.03 μM and 535.0 μM, with a narrow limit of detection of 9.0 nM (S/N = 3). Our proposed protocol was successful in detecting target analytes in real tap water and food specimens.
本研究利用简便的一锅法合成了镍-钴沸石咪唑酯骨架（Ni-ZIF-67）纳米复合材料，并用傅里叶变换红外光谱、X 射线衍射、能谱和扫描电子显微镜对其进行了表征。然后，将 Ni-ZIF-67 纳米复合材料应用于修饰丝网印刷电极（SPE），作为同时检测苏丹红 I 和双酚 A（BPA）的耐用传感器，与裸 SPE 相比，电化学响应显著增加。结果表明，在 0.03 μM 至 535.0 μM 的浓度范围内，校准曲线呈线性，检测限低至 9.0 nM（S/N = 3）。我们提出的方案成功地检测了实际自来水中和食品样本中的目标分析物。
