ABSTRACT
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.
ABSTRACT
The Sustained Release Bag-Infusions of Compound Shanlu Tea,prepared by the containing material with reticular porous fibre,possesses the actions of quick and sustained release. During 1-8 hours,the dissolution follows the zero grade manner,T_(0.5) and Td are 1. 3h and 3. 2h, respectively,and the average dissolution rate is 72. 35mg/h. Compared with the traditional bag-infusions with a type of semi-crude herb, it has large amount charge of drug,convenient using,stable quality and assured curative effect.