synthesis of fibrous adsorbent consisting of two types of cu-mof and pd-mof using electrochemical method and galvanic replacement for use in fiber solid phase micro-extraction of paraben derivatives from cosmetic and their measurement by hplc

The main aim of in this dissertation, we will try to place the porous copper foam on the copper substrate by electrochemical method [1], and finally, by replacing it in pd2 + solution during the galvanic displacement method, a part of cu on the surface will be displaced with pd. finally, by putting the fiber containing pd and cu in 2-hydroxypyrimidine solution (as a organic ligand) and synthesizing in aqueous solution, the cu-mof and pd-mof organic-metal framework is created on the surface. the porous foam mold as a substrate can create a polyhedral shape in the metal-organic framework. in addition, one of the special features of this mof is that unlike other mofs, it is not sensitive to moisture and is easily synthesized in aqueous medium, and finally the synthesized adsorbent will be used to extract the desired experimental species. the prepared modified adsorbent was used as the extracting fiber in the solid micro phase extraction (spme) of selected paraben derivatives from cosmetic. the extracted analytes were eventually injected into the hplc-uv for quantitative measurement and determination. in order to reach the maximum efficiency and obtain the optimal conditions for extraction of the selected analytes, one-at-a-time optimization was used. based on the obtained results and the small rsd% (4.6%) for the method presented, it can be concluded that this absorbent has a high ability to pre-concentrations and selective extractions of testing analytes in cosmetic samples.