Solid phase extraction of heavy metal ions from agricultural samples with the aid of a novel functionalized magnetic metal–organic framework

RSC Advances ◽  
2015 ◽  
Vol 5 (26) ◽  
pp. 19884-19892 ◽  
Author(s):  
Mirzaagha Babazadeh ◽  
Rahim Hosseinzadeh-Khanmiri ◽  
Jafar Abolhasani ◽  
Ebrahim Ghorbani-Kalhor ◽  
Akbar Hassanpour
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Solid Phase Extraction ◽  
Heavy Metal Ions ◽  
Solid Phase ◽  
Metal Organic Framework ◽  
Phase Extraction ◽  
Magnetic Metal ◽  
Metal Organic ◽  
Organic Framework

This work describes synthesis of a novel magnetic metal–organic framework to preconcentrate the trace amounts of heavy metals. (a) Functionalized Fe3O4 by ethylenediamine. (b) Synthesis of the magnetic MOF nanocomposite.

Solid phase extraction of Cd(II) and Pb(II) using a magnetic metal-organic framework, and their determination by FAAS

2013 ◽  
Vol 180 (7-8) ◽  
pp. 589-597 ◽  
Author(s):  
Mahmoud Reza Sohrabi ◽  
Zahra Matbouie ◽  
Ali Akbar Asgharinezhad ◽  
Ali Dehghani
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Metal Organic Framework ◽  
Phase Extraction ◽  
Magnetic Metal ◽  
Metal Organic ◽  
Organic Framework

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

RSC Advances ◽  
2016 ◽  
Vol 6 (46) ◽  
pp. 40211-40218 ◽  
Author(s):  
Elham Tahmasebi ◽  
Mohammad Yaser Masoomi ◽  
Yadollah Yamini ◽  
Ali Morsali
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Phase Extraction ◽  
Metal Organic ◽  
Organic Framework

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.

scholarly journals 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 ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 690 ◽  
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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