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  • آزمایشگاه ICP-OES

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Solid Phase Extraction of Letrozole by a Metal Organic Framework and its HPLC-UV Characterization

Soheila Mohammadi, Mahnaz Hazrati, Yadollah Yamini
Journal PapersAnalytical and Bioanalytical Chemistry Research , Volume 8 , Issue 2, 2021 April 1, {Pages 199-207 }

Abstract

We successfully synthesized TMU-24 as metal-organic framework (MOF) and employed as an effective sorbent for preconcentration of the letrozole (LTZ) from biological samples. Using high-performance liquid chromatography with UV detector (HPLC-UV) coupling with solid-phase extraction (SPE) a sensitive, fast, and simple method for deteing of LTZ has been developed. The optimal conditions, such as pH, type of eluent solvents, contact time amount of adsorbent, and adsorption capacity were discussed. Under the optimized conditions, relative recoveries (RR) and preconcentration factor (PF) of the LTZ was obtained in the range of 92.4–99.6% and 33 respectively. Under the optimal conditions, LTZ can be determined with a limits of detection (LODs)

Development and challenges of supramolecular solvents in liquid-based microextraction methods

Morteza Moradi, Yadollah Yamini, Neda Feizi
Journal Papers , 2021 February 18, {Pages 116231 }

Abstract

To date, a range of liquid-liquid phase separation strategies based on surfactants have often been used in analytical chemistry in which coacervation is influenced by exterior conditions, such as the pH, electrolytes, and temperature. The corresponding surfactant-rich phase, recognized as the supramolecular solvent, is a nano-structured liquid obtained using a two-step sequential molecular and nano self-assembly process. This article includes (i) the synthesis of supramolecular solvents with and without external forces such as vortex shaking and sonication, (ii) the synthesis and utilization of recently designed solvents, and (iii) their versatility in liquid-liquid extractions associated with various analytical instruments. Recent advancem

Development of a convenient polypyrrole based sorbent for headspace solid phase microextraction of diazinon and chlorpyrifos

Amir M Ramezani, Yadollah Yamini, Mahsa Nazraz
Journal PapersJournal of Food Composition and Analysis , Volume 98 , 2021 May 1, {Pages 103806 }

Abstract

A method for polypyrrole (PPy) fiber fabrication through a simple and quick one-step electrodeposition process was developed. 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid was used as an anion dopant for the first time. It was applied for headspace-solid phase microextraction (HS-SPME) of diazinon (DZN) and chlorpyrifos (CPF). A gas chromatography equipped with mass spectrometry was employed for isolation and single ion monitoring of DZN and CPF. Under optimal conditions, linear regressions in the concentration ranges of 0.25–300 ng mL−1 (R2 > 0.99) were achieved. The limits of detection of DZN and CPF were found to be 0.02 and 0.03 ng mL−1, respectively. The developed HS-SPME was employed for analysis of DZN and CPF in five real

Characterization of magnetic nanomaterials

Mohammad Faraji, Yadollah Yamini, Narges Salehi
Journal Papers , 2021 January 1, {Pages 39-60 }

Abstract

Characterization of magnetic nanomaterials (MNMs) is usually accompanied by challenges such as lack of reference materials for calibration of equipment, interpretation of results due to the interdisciplinary nature of this branch, and difficulties associated with sample preparation. There is currently no standard protocol for nanomaterial characterization. Valid and robust measurement methods for MNMs have a major impact on the uptake of these materials in analytical applications. Typically, size and morphology, surface charge and surface chemistry, crystal structure, and its chemical composition and magnetic behavior are some of the properties that are investigated after MNMs synthesis for analytical applications. In this chapter, common t

Application of HKUST‐1 metal‐organic framework as coating for headspace solid‐phase microextraction of some addictive drugs

Tahmine Baheri, Yadollah Yamini, Maryam Shamsayei, Mahmoud Tabibpour
Journal PapersJournal of Separation Science , 2021 May 4, {Pages }

Abstract

In the present study copper based metal‐organic framework (HKUST‐1) was used first time for preconcentration trace amounts of addictive drugs in biological samples. HKUST‐1 was synthesized and coated onto the surface of stainless steel wire. The prepared coating was used in headspace solid phase microextraction method coupled with gas chromatography‐mass spectrometry for preconcentration and determination of some addictive drugs in biological fluids. Prepared coating shows good extraction efficiency due to large surface area, and π–π stacking interaction with selected analytes. Under optimum conditions, the method was validated with a reasonable determination coefficient (R2 > 0.9961) and suitable linear dynamic range (0.5‐10

Applications of porous frameworks in solid‐phase microextraction

Mohammad Mahdi Khataei, Yadollah Yamini, Maryam Shamsayei
Journal Papers , Volume 44 , Issue 6, 2021 March , {Pages 1231-1263 }

Abstract

Porous frameworks are a term of attracting solid materials assembled by interconnection of molecules and ions. These trendy materials due to high chemical and thermal stability, well‐defined pore size and structure, and high effective surface area gained attention to employ as extraction phase in sample pretreatment methods before analytical analysis. Solid‐phase microextraction is an important subclass of sample preparation technique that up to now different configurations of this method have been introduced to get adaptable with different environments and analytical instruments. In this review, theoretical aspect and different modes of solid‐phase microextraction method are investigated. Different classes of porous frameworks and t

Application of magnetic nanomaterials in environmental monitoring

Mohammad Faraji, Yadollah Yamini, Farshid Noormohammadi, Mahnaz Adeli
Journal Papers , 2021 January 1, {Pages 155-189 }

Abstract

To date, the greatest applications of magnetic materials (MNMs)—and perhaps the greatest impact—have been in the field of environmental applications, such as aqueous environment treatment by improving the quality of drinking water resources or by removing industrial pollutants from environmental water samples. Nowadays, MNMs are considered to be an advanced sorbent in the treatment of environmental samples for the purposes of preconcentration and removal of environmental pollutants at trace levels and high levels, respectively. The main advantage of MNMs as sorbents is their magnetic behavior, which allows them to separate pollutants from large volume environmental samples simply and quickly with the aid of a magnet without the need for

Application of magnetic nanomaterials in food analysis

Mohammad Faraji, Yadollah Yamini
Journal Papers , 2021 January 1, {Pages 87-120 }

Abstract

Nowadays, magnetic nanomaterials (MNMs) are investigated as emerging sorbents in sample preparation techniques of food samples for the extraction and enrichment of food components and pollutants at trace levels. The main advantage of MNMs as a sorbent is their magnetic behavior by which the magnet can separate the target compounds from the food matrix without the need for tedious filtration and centrifugation steps. Also, nanosized sorbents possess high surface areas and short diffusion routes that lead to higher extraction capacities and extraction efficiencies. In this chapter, the applications of nanomaterials as sorbents in food analysis will be reviewed. Initially, the properties of some of the advanced and important nanomaterials used

A new configuration for in-tube solid phase microextraction based on a thin-film coating

Z Dinmohammadpour, Y Yamini, M Nazraz, M Shamsayei
Journal Papers , , {Pages }

Abstract

Plugged bifunctional periodic mesoporous organosilica as a high-performance solid phase microextraction coating for improving extraction efficiency of chlorophenols in …

KZ Mousavi, Y Yamini, B Karimi, MM Khataei, M Khorasani, S Seidi, ...
Journal Papers , , {Pages }

Abstract

Dispersive magnetic solid phase microextraction on microfluidic systems for extraction and determination of parabens

M Farahmandi, Y Yamini, M Baharfar, M Karami
Journal Papers , , {Pages }

Abstract

Molecularly imprinted polypyrrole@ CuO nanocomposite as an in-tube solid-phase microextraction coating for selective extraction of carbamazepine from biological samples

H Kefayati, Y Yamini, M Shamsayei, S Abdi
Journal Papers , , {Pages }

Abstract

Synthesis and characterization of layered double hydroxide decorated zeolite as the efficient sorbent for removal of toxic metal ions

M Shamsayei, Y Yamini, H Asiabi
Journal Papers , , {Pages }

Abstract

Emergence of microfluidic devices in sample extraction; an overview of diverse methodologies, principals, and recent advancements

M Alidoust, M Baharfar, M Manouchehri, Y Yamini, M Tajik, S Seidi
Journal Papers , , {Pages }

Abstract

Mahnaz Adeli4 1Research Group of Food, Halal and Agricultural Products, Research Department of Food Technology and Agricultural Products, Standard Research Institute (SRI …

M Faraji, Y Yamini, F Noormohammadi
Journal Papers , , {Pages }

Abstract

1Research Group of Food, Halal and Agricultural Products, Research Department of Food Technology and Agricultural Products, Standard Research Institute (SRI), Karaj, Iran

M Faraji, Y Yamini
Journal Papers , , {Pages }

Abstract

Combining of modified QuEChERS and dispersive liquid–liquid microextraction as an efficient sample preparation method for extraction of acetamiprid and imidacloprid from …

H Khanehzar, M Faraji, A Nezhadali, Y Yamini
Journal Papers , , {Pages }

Abstract

Surfactant-Based Extraction Systems

Yadollah Yamini, Neda Feizi, Morteza Moradi
Journal Papers , 2020 January 1, {Pages 209-239 }

Abstract

In this chapter, preconcentration and cleanup characteristics of surface-active agents in solvent extraction are discussed. Their amphiphilic nature creates an affinity for interaction with target analytes at interfaces of water/organic solvents or water-/surfactant-rich phase. The type of surfactant and the interaction of surfactant with organic molecules/metal cations and also the matrix predict the level of extraction performance. Formulation and understanding the behavior of surfactants in liquid solution are critical to optimal application of surfactants in LLE techniques. Surfactants have been studied at three major categories of solvent extraction including extractant, disperser, and ion-pairing agent. (I) Surfactants at above CMC co

On-chip ion pair-based dispersive liquid-liquid extraction for quantitative determination of histamine H2 receptor antagonist drugs in human urine

Monireh Karami, Yadollah Yamini, Yousef Abdossalami Asl
Journal PapersTalanta , Volume 206 , 2020 January 1, {Pages 120235 }

Abstract

In the present work, an ion-pair based dispersive liquid-liquid microextraction was performed on a centrifugal chip for the first time. The entire DLLME procedure, including flow direction, desperation, and sedimentation of the extracting phase, can be fulfilled automatically on a solitary chip. The chip was made of Poly(methyl methacrylate) (PMMA) and was of two units for two parallel extractions, each consisting of three chambers (for the sample solution, extracting solvents, and sedimentation). As the chip rotated, fluids flowed within the chip, and the dispersion, mixing, extraction, and sedimentation of the final phase were performed on the chip by simply adjusting the spin speed. Determination of two histamine H2 receptor antagonist d

Imine-based covalent triazine framework: Synthesis, characterization, and evaluation its adsorption

Nazanin Mokhtari, Mohammad Mahdi Khataei, Mohammad Dinari, Bahram Hosseini Monjezi, Yadollah Yamini
Journal PapersMaterials Letters , Volume 263 , 2020 March 15, {Pages 127221 }

Abstract

In this work, an imine-based covalent triazine framework (IB-CTF) was synthesized and thoroughly characterized by TGA, FT-IR, XRD, and FE-SEM. Then, its application was investigated in head-space solid-phase microextraction (HS-SPME) of Chlorophenols (CPs) from aqueous solutions. The selected CPs (2,4-dichlorophenol (2,4-DCP), 2,3-dichlorophenol (2,3-DCP), and 3,5-dichlorophenol (3,5-DCP)) were successfully extracted in only 30?min. The presence of hydrogen bonding and π-π interactions between the adsorbent and the above-mentioned CPs led to better extraction. The obtained results confirm the application of CTFs as adsorbents in HS-SPME in wastewater treatment.

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