Results 211 to 220 of about 354,183 (253)
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Microchimica Acta, 2022
Cellulose acetate fibers were modified with a gelatin cryogel adsorbent incorporating an iron-carboxylate metal-organic framework and hypercrosslinked polymer composite. The hybrid adsorption materials facilitated the adsorption ability toward polycyclic aromatic hydrocarbons and were entrapped into gelatin cryogel to be hierarchically coated on ...
Suppawan Sillapawisut +3 more
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Cellulose acetate fibers were modified with a gelatin cryogel adsorbent incorporating an iron-carboxylate metal-organic framework and hypercrosslinked polymer composite. The hybrid adsorption materials facilitated the adsorption ability toward polycyclic aromatic hydrocarbons and were entrapped into gelatin cryogel to be hierarchically coated on ...
Suppawan Sillapawisut +3 more
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CLEAN – Soil, Air, Water, 2016
This work aimed to combine solid phase extraction (SPE) with inductively coupled plasma mass spectrometry for the determination of multi‐elements (Pb, Cd, and Zn) simultaneously. This combination allows the purification of the solution by minimizing matrix effects, the separation of the analytes and a fast determination of multiple elements (Pb, Cd ...
ALOthman, Zeid A. +3 more
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This work aimed to combine solid phase extraction (SPE) with inductively coupled plasma mass spectrometry for the determination of multi‐elements (Pb, Cd, and Zn) simultaneously. This combination allows the purification of the solution by minimizing matrix effects, the separation of the analytes and a fast determination of multiple elements (Pb, Cd ...
ALOthman, Zeid A. +3 more
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Journal of Chromatography A, 1990
Etude du comportement chromatographique de certains metaux (Co, Cu, Fe, Hg, Pb) sur des couches minces de gel de silice impregnees par des acides en utilisant des eaux de distribution et distillee comme ...
I. Škvorc +3 more
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Etude du comportement chromatographique de certains metaux (Co, Cu, Fe, Hg, Pb) sur des couches minces de gel de silice impregnees par des acides en utilisant des eaux de distribution et distillee comme ...
I. Škvorc +3 more
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Talanta, 2017
A novel simple fully automatic on-line magnetic stirring-assisted liquid-liquid microextraction method, based on the lab-in-syringe (LIS) concept, has been developed as an alternative approach for sample pretreatment and atomic spectrometric assays. The analytical process includes the in-syringe reaction of the metal ion with the chelating reagent, the
Georgia, Giakisikli +1 more
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A novel simple fully automatic on-line magnetic stirring-assisted liquid-liquid microextraction method, based on the lab-in-syringe (LIS) concept, has been developed as an alternative approach for sample pretreatment and atomic spectrometric assays. The analytical process includes the in-syringe reaction of the metal ion with the chelating reagent, the
Georgia, Giakisikli +1 more
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Microchemical Journal, 2020
Abstract A simple and efficient integrated, laboratory-made, semi-automatic microextraction packed in a syringe (Semi-automated MEPS) was first assembled and validated for the extraction of parabens in vegetable oils. Several representative metal–organic frameworks were prepared and used as sorbents for the direct extraction of analytes from diluted ...
Yanxiao Jiang +8 more
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Abstract A simple and efficient integrated, laboratory-made, semi-automatic microextraction packed in a syringe (Semi-automated MEPS) was first assembled and validated for the extraction of parabens in vegetable oils. Several representative metal–organic frameworks were prepared and used as sorbents for the direct extraction of analytes from diluted ...
Yanxiao Jiang +8 more
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Journal of Separation Science, 2018
AbstractIn‐syringe solid‐phase extraction is a promising sample pretreatment method for the on‐site sampling of water samples because of its outstanding advantages of portability, simple operation, short extraction time, and low cost. In this work, a novel in‐syringe solid‐phase extraction device using metal–organic frameworks as the adsorbent was ...
Xiaoqiong Zhang +5 more
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AbstractIn‐syringe solid‐phase extraction is a promising sample pretreatment method for the on‐site sampling of water samples because of its outstanding advantages of portability, simple operation, short extraction time, and low cost. In this work, a novel in‐syringe solid‐phase extraction device using metal–organic frameworks as the adsorbent was ...
Xiaoqiong Zhang +5 more
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Journal of Chromatography A, 2018
In this work, a metal-organic framework material MIL-101(Cr) was prepared and used as the sorbent for a laboratory-made semi-automated microextraction in packed syringe (MEPS). Six triazine herbicides, including desmetryn, prometon, ametryn, prometryn, atraton, and dipropetryn, that are commonly found in corn samples, were extracted and determined by ...
Yanxiao Jiang +7 more
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In this work, a metal-organic framework material MIL-101(Cr) was prepared and used as the sorbent for a laboratory-made semi-automated microextraction in packed syringe (MEPS). Six triazine herbicides, including desmetryn, prometon, ametryn, prometryn, atraton, and dipropetryn, that are commonly found in corn samples, were extracted and determined by ...
Yanxiao Jiang +7 more
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Experimental (FT-IR, FT-Raman, 1H, 13C NMR) and theoretical study of alkali metal syringates
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013In this work the influence of lithium, sodium, potassium, rubidium and cesium on the electronic system of the syringic acid (4-hydroxy-3,5-dimethoxybenzoic acid) was studied. This paper presents spectroscopic vibrations (FT-IR, FT-Raman) and NMR ((1)H and (13)C) study of the series of alkali metal syringates from lithium to cesium syringates ...
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Talanta
A novel fully automatic continuous flow polyurethane foam solid phase microextraction lab-in-syringe system for on-line sample preconcentration/separation has been developed as a front-end to flame atomic absorption spectrometry. For the first time lab-in-syringe in continuous flow has been adopted for the determination of toxic metals.
Natalia, Manousi, Aristidis, Anthemidis
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A novel fully automatic continuous flow polyurethane foam solid phase microextraction lab-in-syringe system for on-line sample preconcentration/separation has been developed as a front-end to flame atomic absorption spectrometry. For the first time lab-in-syringe in continuous flow has been adopted for the determination of toxic metals.
Natalia, Manousi, Aristidis, Anthemidis
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Talanta
A green, simple, low-cost, miniaturized, and portable needle hub-in-syringe micro solid phase extraction (NH-IS-μ-SPE) method was developed using a green metal-organic gel (MOG) sorbent. Coupled with high-performance liquid chromatography diode array detector (HPLC-DAD), this approach enables efficient extraction and preconcentration of seven selected ...
Xin Ai Wong +3 more
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A green, simple, low-cost, miniaturized, and portable needle hub-in-syringe micro solid phase extraction (NH-IS-μ-SPE) method was developed using a green metal-organic gel (MOG) sorbent. Coupled with high-performance liquid chromatography diode array detector (HPLC-DAD), this approach enables efficient extraction and preconcentration of seven selected ...
Xin Ai Wong +3 more
openaire +2 more sources