The present invention provides a stationary phase for solid-phase microextraction (SPME) devices based on nickel-titanium alloy cores and a metal-organic framework (MOF) exterior, which can be used for chromatographic analysis in environmental, food, and other applications. The stationary phase preparation method consists of several steps that provide covalent adhesion of the MOF to the nickel/titanium alloy. In these stationary phases, the metal-organic framework is the only component that comes into contact with the sample to be analyzed. The interior of the stationary phase is made of nitinol, which provides thermal and mechanical stability to the system. This is the first time nitinol has been used to support a metal-organic framework, and it offers extraction advantages over commercial SPME stationary phases.
Chromatographic analysis in environmental, food, etc. applications.
– Greater thermal and mechanical stability to the system.
– Increased extraction efficiency compared to commercial SPMEs.