Area Academica de Quimica, Universidad Autonoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo Km. 4.5, 42184, Mineral de la Reforma, Hidalgo, Mexico.
Area Academica de Ciencias de la Tierra y Materiales, Universidad Autonoma del Estado de Hidalgo, Cd. Universitaria, Carr. Pachuca-Tulancingo Km. 4.5., C.P. 42184, Mineral de la Reforma, Hidalgo, Mexico.
Anal Methods. 2022 May 13;14(18):1797-1802. doi: 10.1039/d2ay00356b.
AgInS/ZnS quantum dots were synthesized solvothermal aqueous phase method using 3-mercaptopropionic acid as the stabilizer. AgInS/ZnS quantum dots were employed for acrylamide sensing under two strategies: (1) quenching of the fluorescence signal by the synthesis of polyacrylamide under UV light and (2) use of 2-naphthalenethiol for quenching of the fluorescence signal of quantum dots followed by a recovery of the signal after the addition of acrylamide. Both methodologies display adequate limits of detection, 15.6 and 4.8 μg L, respectively. However, the 2-napthalenethiol based method exhibited better precision and selectivity compared to the other methodology. Both methodologies were applied for acrylamide detection in fried snack products and acceptable accuracy was obtained using 2-napthalenethiol method.
AgInS/ZnS 量子点通过溶剂热的水相法合成，使用 3-巯基丙酸作为稳定剂。AgInS/ZnS 量子点用于丙烯酰胺传感，采用两种策略：(1)在紫外光下合成聚丙烯酰胺使荧光信号猝灭；(2)使用 2-萘硫醇猝灭量子点的荧光信号，然后在加入丙烯酰胺后恢复信号。这两种方法的检测限分别为 15.6 和 4.8μg/L。然而，与另一种方法相比，基于 2-萘硫醇的方法显示出更好的精密度和选择性。这两种方法均应用于油炸小吃产品中的丙烯酰胺检测，使用 2-萘硫醇法获得了可接受的准确性。
