Rapid and direct MALDI-MS identification of pathogenic bacteria from blood using ionic liquid-modified magnetic nanoparticles (Fe3O4@SiO2)

2014 ◽  
Vol 2 (29) ◽  
pp. 4671-4683 ◽  
Author(s):  
Mukesh L. Bhaisare ◽  
Hani Nasser Abdelhamid ◽  
Bo-Sgum Wu ◽  
Hui-Fen Wu
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Pathogenic Bacteria ◽  
Maldi Ms ◽  
Blood Samples ◽  
Bacteria Identification ◽  
Novel Method ◽  
Modified Magnetic Nanoparticles ◽  
Magnetic Nanoparticles Fe3o4

A novel method for pathogenic bacteria identification directly from blood samples using cationic ionic liquid-modified magnetic nanoparticles (CILMS) is reported.

scholarly journals Magnetic Solid-Phase Extraction using Ionic Liquid-Modified Magnetic Nanoparticles for The Simultaneous Extraction of Cadmium and Lead in Milk Samples; Evaluation of Measurement Uncertainty

2021 ◽  
Vol 65 (4) ◽  
Author(s):  
Sara Khodadadi ◽  
Elaheh Konoz ◽  
Ali Ezabadi ◽  
Ali Niazi
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Simultaneous Extraction ◽  
Milk Samples ◽  
Magnetic Solid ◽  
Modified Magnetic Nanoparticles

Abstract. In the present study, a new, sensitive, and rapid method was developed for extraction and determination of the trace amounts of Pb (II) and Cd (II) ions in milk samples through magnetic solid-phase extraction using DABCO based-ionic liquid-modified magnetic nanoparticles (Fe3O4/[DABCO-PDO]Cl NPs). Herein, Pb (II) and Cd (II) contents were quantified with flame atomic absorption spectroscopy (FAAS). The effect of different empirical parameters (such as sample pH, adsorbent amount, type and amount of the elution, extraction and desorption times, and the ligand concentration) was evaluated and optimized for simultaneous extraction and pre-concentration Pb (II) and Cd (II) ions. The calibration curve was linear under the optimum condition in the concentration range of 0.4-200 µgL-1 for Cd, and 0.5-120 µgL-1 for Pb, respectively. The pre-concentration factor was 67, with the detection limit of 0.09 and 0.07 µgL-1 for Pb and Cd, respectively. The relative standard deviation values (RSD %) of the proposed method were lower than 2.6 %. The developed method was successfully used to determine lead and cadmium content in milk samples. The information obtained from the method validation has been used to estimate the expanded uncertainty for the determination of Pb (II) and Cd (II) at trace levels in commercial milks.   Resumen. En este trabajo, se ha desarrollado un nuevo, sensible y rápido procedimiento para la extracción y determinación de iones Pb(II) y Cd(II) a nivel de trazas en leche, mediante extracción en fase sólida utilizando nanopartículas magnéticas modificadas con líquido iónico basado en DABCO (Fe3O4/[DABCO-PDO]Cl NPs). La determinación de ambos metales se llevó a cabo por espectrometría de absorción atómica con atomización en llama. Se ha evaluado el efecto de diferentes parámetros empíricos (tales como pH, cantidad de adsorbente, tipo y cantidad de solvente de elución, tiempo de extracción y desorción, y concentración del ligando); estos parametros fueron optimizados enfocándose en la extracción y preconcentración simultanea de ambos iones. Empleando las condiciones establecidas, se obtuvo buena linealidad de las curvas de calibración en el intervalo de concentraciones 0.4-200 µgL-1 para Cd, y 0.5-120 µgL-1 para Pb, respectivamente. Se logró el factor de preconcentración 67, con los límites de detección 0.09 y 0.07 µgL-1 para Pb y Cd, respectivamente. Los valores de desviación estandar relativa (RSD %) en el procedimiento propuesto no sobrepasaron 2.6 %. En el análisis de leche, se obtuvieron resultados satisfactorios. Los datos obtenidos en etapa de validación se utilizaron para estimar la incertidumbre expandida en la determinación de Pb y Cd a nivel de trazas en leche.

scholarly journals Polyaniline modified magnetic nanoparticles coated with dicationic ionic liquid for effective removal of rhodamine B (RB) from aqueous solution

RSC Advances ◽  
2018 ◽  
Vol 8 (58) ◽  
pp. 33180-33192 ◽  
Author(s):  
Mohamad Shariff Shahriman ◽  
Nur Nadhirah Mohamad Zain ◽  
Sharifah Mohamad ◽  
Ninie Suhana Abdul Manan ◽  
Suhaila Mohd Yaman ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Rhodamine B ◽  
Schematic Diagram ◽  
Effective Removal ◽  
Dicationic Ionic Liquid ◽  
Modified Magnetic Nanoparticles

Schematic diagram of the removal procedure of RB on MNP-PANI-DICAT.

Highly dispersible bis-imidazolium/WO42− modified magnetic nanoparticles: a heterogeneous phase transfer catalyst for green and selective oxidations

2016 ◽  
Vol 40 (12) ◽  
pp. 10325-10332 ◽  
Author(s):  
Nasrin Zohreh ◽  
Maryam Tavakolizadeh ◽  
Seyed Hassan Hosseini ◽  
Mahboobeh Jahani ◽  
Ali Pourjavadi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Recoverable Catalyst ◽  
Magnetically Recoverable Catalyst ◽  
Modified Magnetic Nanoparticles ◽  
Heterogeneous Phase

A novel magnetically recoverable catalyst was prepared in which magnetic nanoparticles were functionalized by bis-imidazolium tungstate ionic liquid molecules.

Magnetic solid-phase extraction of proteins based on hydroxy functional ionic liquid-modified magnetic nanoparticles

2014 ◽  
Vol 6 (20) ◽  
pp. 8358-8367 ◽  
Author(s):  
Jing Chen ◽  
Yuzhi Wang ◽  
Xueqin Ding ◽  
Yanhua Huang ◽  
Kaijia Xu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Extraction Performance ◽  
Modified Magnetic Nanoparticles

Hydroxy functional ionic liquids have been first designed and modified on the surface of silica-coated magnetic Fe3O4 nanoparticles (MNPs) for the investigation of the extraction performance of proteins.

Copper-loaded polymeric magnetic nanocatalysts as retrievable and robust heterogeneous catalysts for click reactions

2015 ◽  
Vol 39 (6) ◽  
pp. 4591-4600 ◽  
Author(s):  
Ali Pourjavadi ◽  
Mahmood Tajbakhsh ◽  
Maryam Farhang ◽  
Seyed Hassan Hosseini
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Copper Sulfate ◽  
Heterogeneous Catalysts ◽  
Copper Catalyst ◽  
Polymer Chains ◽  
Click Reactions ◽  
Modified Magnetic Nanoparticles ◽  
Poly Ionic Liquid ◽  
Surface Modified

A novel heterogeneous copper catalyst based on poly(ionic liquid)-coated magnetic nanoparticles was prepared by the polymerization of 3-carboxymethyl-1-vinylimidazolium in the presence of surface-modified magnetic nanoparticles, followed by the coordination of the carboxylate units in the polymer chains with copper sulfate.

Sign in / Sign up

Export Citation Format

Share Document