Application of a Zn(ii) based metal–organic framework as an efficient solid-phase extraction sorbent for preconcentration of plasticizer compounds

A solid-phase extraction (SPE) sorbent, a Zn(ii) based metal–organic framework, was prepared via a simple, solventless, green and a low-cost mechanosynthesis process.

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Metal organic framework based carbon porous as an efficient dispersive solid phase extraction adsorbent for analysis of methamphetamine from urine matrix

Journal of Chromatography B ◽

10.1016/j.jchromb.2019.02.005 ◽

2019 ◽

Vol 1109 ◽

pp. 149-154 ◽

Cited By ~ 6

Author(s):

Arezou Taghvimi ◽

Ahad Bavili Tabrizi ◽

Siavoush Dastmalchi ◽

Yousef Javadzadeh

Keyword(s):

Solid Phase Extraction ◽

Solid Phase ◽

Metal Organic Framework ◽

Phase Extraction ◽

Dispersive Solid Phase Extraction ◽

Metal Organic ◽

Urine Matrix ◽

Organic Framework

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Application of a Pillared-Layer Zn-Triazolate Metal-Organic Framework in the Dispersive Miniaturized Solid-Phase Extraction of Personal Care Products from Wastewater Samples

Molecules ◽

10.3390/molecules24040690 ◽

2019 ◽

Vol 24 (4) ◽

pp. 690 ◽

Cited By ~ 8

Author(s):

Providencia González-Hernández ◽

Ana Lago ◽

Jorge Pasán ◽

Catalina Ruiz-Pérez ◽

Juan Ayala ◽

...

Keyword(s):

Solid Phase Extraction ◽

Solid Phase ◽

Metal Organic Framework ◽

Personal Care Products ◽

Aqueous Sample ◽

Phase Extraction ◽

Personal Care ◽

Relative Standard ◽

Metal Organic ◽

Organic Framework

The pillared-layer Zn-triazolate metal-organic framework (CIM-81) was synthesized, characterized, and used for the first time as a sorbent in a dispersive micro-solid phase extraction method. The method involves the determination of a variety of personal care products in wastewaters, including four preservatives, four UV-filters, and one disinfectant, in combination with ultra-high performance liquid chromatography and UV detection. The CIM-81 MOF, constructed with an interesting mixed-ligand synthetic strategy, demonstrated a better extraction performance than other widely used MOFs in D-µSPE such as UiO-66, HKUST-1, and MIL-53(Al). The optimization of the method included a screening design followed by a Doehlert design. Optimum conditions required 10 mg of CIM-81 MOF in 10 mL of the aqueous sample at a pH of 5, 1 min of agitation by vortex and 3 min of centrifugation in the extraction step; and 1.2 mL of methanol and 4 min of vortex in the desorption step, followed by filtration, evaporation and reconstitution with 100 µL of the initial chromatographic mobile phase. The entire D-µSPE-UHPLC-UV method presented limits of detection down to 0.5 ng·mL−1; intra-day and inter-day precision values for the lowest concentration level (15 ng·mL−1)-as a relative standard deviation (in %)-lower than 8.7 and 13%, respectively; average relative recovery values of 115%; and enrichment factors ranging from ~3.6 to ~34. The reuse of the CIM-81 material was assessed not only in terms of maintaining the analytical performance but also in terms of its crystalline stability.

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