Fig. 2From: Introduction of a Zn-based metal–organic framework @ biomass porous activated carbon as a high-sensitive coating for a stainless steel SPME fiber: application to the simultaneous analysis of nonsteroidal anti-inflammatory drugsFESEM micrographs of the A bread, B BHPC, C Zn-MOF-5, and D Zn-MOF-5@BHPAC nanocomposite, E the cross-section micro-image of the proposed SPME fiber and the elemental mapping of the nanocomposite: F C, G O and H ZnBack to article page