Zeolitic imidazolate framework-8 as sorbent of micro-solid-phase extraction to determine estrogens in environmental water samples

Performance of metal-organic framework MIL-101 after surfactant modification in the extraction of endocrine disrupting chemicals from environmental water samples

“…As shown in Table 2, the LODs obtained in the study were lower than the CPE [32] and solvent based extraction [37] methods, coupled to highperformance liquid chromatography-ultraviolet detection (HPLC-UV) and liquid chromatography-tandem mass spectrometry (LC-MS/MS), respectively. Micro-SPE extraction methods relying on home-made devices have also been developed in the determination of these EDCs from environmental samples, but they exhibited 2-100-fold higher LODs relative to those of the present study [39,40]. Compared with the results achieved by SPE, the LODs of the proposed method ranging from 0.006 to 0.023 ng/mL are higher than those obtained with commercial SPE cartridges [42][43][44] (Table 2).…”

“…In the proposed method, the extraction process could be completed in ca. 35 min, implying higher time efficiency than the µ-SPE [40] and the SPME [45] procedures. Taking into consideration the various factors in terms of analytical performance, amount of sorbent and sample throughput, the proposed method could be an effective and sensitive extraction method for the analysis of trace EDCs in water.…”

The water – resistant zeolite imidazolate framework 67 is a viable solid phase sorbent for fluoroquinolones while efficiently excluding macromolecules

“…Although the possible interactions between ZIF-8 and analytes are poorly understood, Ge and Lee used ZIF-8 in micro-solid-phase extraction for extracting polycyclic aromatic hydrocarbons (PAHs) and acidic drugs from environment water samples [17][18][19]. Wang et al [20] and Yang et al [21] used ZIF-8 as sorbent to determine tetracyclines and estrogens. ZIF-67 (Co(Hmim) 2 ) is isostructural to ZIF-8, in which Zn(II) is replaced by Co(II).…”

Determination of phthalate esters in environmental water by magnetic Zeolitic Imidazolate Framework-8 solid-phase extraction coupled with high-performance liquid chromatography

“…Some MOFs have drawn special interest in analytical applications, such as Materials of Institut Lavoisier (MIL) [24,25], UiO-66 [26], [Cu 3 (btc) 2 ] [27], as well as Zeolitic Imidazolate Framework-8 (ZIF-8) [28][29][30][31]. Thereinto, ZIF-8 has permanent porosity, hydrophobic property and open metal sites, and especially it is very stable in water samples [22].…”

“…Yang et al [29] utilized ZIF-8 for on-line SPE of tetracyclines in water and milk samples. Wang et al [30] used ZIF-8 as sorbent for -SPE of estrogens in environmental water samples. However, only a few ZIF-8 related magnetic materials have been reported for now [31][32][33][34].…”