1.Construction of Nano Silver Modified Super Hydrophobic Interface for Detection of Trichlorfon Pesticides
Nan ZHANG ; Longzhen ZHENG ; Leiyan XIONG ; Zanru GUO ; Xiaowei KANG ; Qian WANG ; Zirui WU ; Zemin DONG
Chinese Journal of Analytical Chemistry 2017;45(2):261-267
Super hydrophobic interface modified with silver nanoparticles was fabricated for the detection of pesticide residues.By using a chemical reduction method,silver nanoparticles were deposited on the substrate surfaces with different microscopic pore structures.Two kinds of composite substrates,including regular stainless steel mesh and cellulose polyester film,were used.The pre-treatment of the substrate with fluoridated reagents was used to form a super hydrophobic interface,which made the target molecules on the surface concentrate effectively.The surface with the cellulose polyester substrate was used to detect Rhodamine 6G (R 6G) effectively with surface enhanced Raman scattering (SERS) technique.The results showed that the detection hmit was 10-16 mol/L.In addition,the surfaces based on the stainless steel mesh and cellulose polyester substrate were used to detect trichlorfon pesticide with detection limits of 1 × 10-15 mol/L and 1 × 10-16 mol/L,respectively.
Result Analysis
Print
Save
E-mail