LAUSR

A functional stainless steel microextraction fiber facilely prepared by in-situ growing metal-organic framework UiO-66 was presented and used for high-performance analysis of polycyclic musks. Via the robust Ag-SH bonding reaction, mercaptoacetic acid was easily anchored on Ag film to provide carboxyl group on the stainless steel fiber, then in-situ grown UiO-66 was fulfilled via the coordination reaction between Zr4+ and carboxyl group. Good characteristics including large surface area, high thermal stability and good adsorption property were achieved. Sensitive detection limits (0.015-0.04 ng·L-1 ) were achieved for polycyclic musks by coupling with GC-MS, and it could be stable enough for 150 extraction cycles without a significant loss of extraction efficiency. Compared with the classical commercial fibers, 2.2-11.4 times higher enhancement factors were shown. Applied to the analysis of fortified river water samples, five typical polycyclic musks were well detected with the recoveries of 90.2%-101.8%, respectively. It lighted a facile approach for preparing stainless steel microextraction fiber via chemically bonding in-situ grown metal-organic framework for the high-performance enrichment. This article is protected by copyright. All rights reserved.