Preparation of gold nanobiparamid and its application in rapid detection of food contaminants
LUAN Long-long1, WANG Sheng1, ZHANG Xiang2, WANG Juan3, WANG Qian-qian3, XU Wei-ping1,4
1. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China; 2. Life Sciences and Medicine Division, University of Science and Technology of China, Hefei 230026, China; 3. College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China; 4. The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
Abstract: A novel, reliable and rapid detection platform is developed to detect various chemical pollutants in food.Gold nanobiparamid is synthesized by means of a two-step seed growth method, and then gold nanobiparamid with a purity close to 100% is obtained through consumption-induced separation method.Finally, a large-area dense gold nanobiparamid surface-enhanced Raman scattering (SERS) active substrate is prepared through a liquid-liquid interface self-assembly method.The results indicate that the prepared substrate exhibits excellent SERS sensitivity and repeatability when crystalline violet (CV) is used as Raman probe molecule.Moreover, the prepared substrate shows high detection sensitivity to malachite green (antibiotic), thiram (pesticide residues) and butyl benzyl phthalate (plasticizer) in food, with detection limits of 10-9 mol·L-1, 10-9 mol·L-1 and 10-8 mol·L-1, respectively.In addition, its detection limit to butyl benzyl phthalate in wine achieves 1.3 mg·kg-1.
栾龙龙, 汪胜, 张祥, 王娟, 汪倩倩, 徐维平. 金纳米双锥体的制备及对食品污染物的快速检测[J]. 现代化工, 2022, 42(2): 241-246.
LUAN Long-long, WANG Sheng, ZHANG Xiang, WANG Juan, WANG Qian-qian, XU Wei-ping. Preparation of gold nanobiparamid and its application in rapid detection of food contaminants. Modern Chemical Industry, 2022, 42(2): 241-246.
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