School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, JiangSu Province, 215009, China.
School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, JiangSu Province, 215009, China.
Biosens Bioelectron. 2024 Aug 1;257:116345. doi: 10.1016/j.bios.2024.116345. Epub 2024 Apr 27.
Nitrite (NO) is present in a variety of foods, but the excessive intake of NO can indirectly lead to carcinogenic, teratogenic, mutagenicity and other risks to the human body. Therefore, the detection of NO is crucial for maintaining human health. In this study, an integrated array sensor for NO detection is developed based on molybdenum single atom material (IMS) using high-resolution electrohydrodynamic (EHD) printing technology. The sensor comprises three components: a printed electrode array, multichannels designed on polydimethylsiloxane (PDMS) and an electronic signal process device with bluetooth. By utilizing Mo-SAC to facilitate electron transfer during the redox reaction, rapid and efficient detection of NO can be achieved. The sensor has a wide linear range of 0.1 μM-107.8 mM, a low detection limit of 33 nM and a high sensitivity of 0.637 mAmM cm. Furthermore, employing this portable array sensor allows simultaneously measurements of NO concentrations in six different foods samples with acceptable recovery rates. This array sensor holds great potential for detecting of small molecules in various fields.
亚硝酸盐（NO）存在于各种食物中，但过量摄入 NO 可能会间接对人体造成致癌、致畸、致突变等风险。因此，NO 的检测对于维护人类健康至关重要。本研究采用高分辨率电喷印刷技术，基于钼单原子材料（IMS），开发了一种用于 NO 检测的集成阵列传感器。该传感器由三部分组成：印刷电极阵列、在聚二甲基硅氧烷（PDMS）上设计的多通道和带有蓝牙的电子信号处理装置。通过利用 Mo-SAC 在氧化还原反应中促进电子转移，可实现快速高效的 NO 检测。该传感器具有 0.1 μM-107.8 mM 的宽线性范围、33 nM 的低检测限和 0.637 mAmM cm 的高灵敏度。此外，使用这种便携式阵列传感器可以同时测量六种不同食物样品中的 NO 浓度，回收率可接受。该阵列传感器在各个领域检测小分子具有很大的潜力。
