Articles with "graphite furnace" as a keyword



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Determination of Cadmium Concentration in Milled and Brown Rice Grains Using Graphite Furnace Atomic Absorption Spectrometry.

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Published in 2019 at "Methods in molecular biology"

DOI: 10.1007/978-1-4939-8914-0_15

Abstract: Heavy metal pollution is a growing public health concern since it poses a food risk to public health via metal transfer. Cadmium is of particular concern because it is a potential carcinogen if exceed tolerable… read more here.

Keywords: rice; milled brown; graphite furnace; cadmium ... See more keywords
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An ion-imprinted thiocyanato-functionalized mesoporous silica for preconcentration of gold(III) prior to its quantitation by slurry sampling graphite furnace AAS

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Published in 2018 at "Mikrochimica Acta"

DOI: 10.1007/s00604-018-3106-x

Abstract: AbstractA gold(III)-imprinted thiocyanato-functionalized silica network of type SBA-15 was prepared by co-condensation of tetraethoxysilane (TEOS) with thiocyanatopropyltriethoxysilane (TCTES) in the presence of Pluronic123 and Au(III) ions. Compared to the non-imprinted material, the imprint has a… read more here.

Keywords: ion imprinted; iii; imprinted thiocyanato; thiocyanato functionalized ... See more keywords
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Direct determination of Pb in raw milk by graphite furnace atomic absorption spectrometry (GF AAS) with electrothermal atomization sampling from slurries.

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Published in 2017 at "Food Chemistry"

DOI: 10.1016/j.foodchem.2017.02.143

Abstract: Abstract Milk is an important food in the human diet due to its physico-chemical composition; therefore, it is necessary to monitor contamination by toxic metals such as Pb. Milk sample slurries were prepared using Triton… read more here.

Keywords: milk; methodology; absorption spectrometry; graphite furnace ... See more keywords
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Optimization of supramolecular solvent microextraction prior to graphite furnace atomic absorption spectrometry for total selenium determination in food and environmental samples

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Published in 2017 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2017.02.082

Abstract: Abstract In this work, two formats of supramolecular solvent microextraction have been made up of (i) inverted hexagonal aggregates of 1-octanol (rod-like micelle) and (ii) reverse micelles of octanoic acid in tetrahydrofuran (THF):water coupled with… read more here.

Keywords: total selenium; solvent microextraction; supramolecular solvent; graphite furnace ... See more keywords
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Iminodiacetic acid functionalized magnetic nanoparticles for speciation of Cr(III) and Cr(VI) followed by graphite furnace atomic absorption spectrometry detection

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Published in 2017 at "RSC Advances"

DOI: 10.1039/c6ra27544c

Abstract: In this work, iminodiacetic acid (IDA) functionalized magnetic nanoparticles (Fe3O4@SiO2@IDA) were prepared and the adsorption behavior of Cr(III)/(VI) on them was investigated. It was found that both Cr(III) and Cr(VI) could be quantitatively retained on… read more here.

Keywords: iii; magnetic nanoparticles; iminodiacetic acid; functionalized magnetic ... See more keywords

Preparation of an L-Cysteine Functionalized Magnetic Nanosorbent for the Sensitive Quantification of Heavy Metal Ions in Food by Graphite Furnace Atomic Absorption Spectrometry

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Published in 2020 at "Analytical Letters"

DOI: 10.1080/00032719.2020.1729168

Abstract: Abstract A typical l-cysteine functionalized magnetic mesoporous nanosorbent (Cys–Si–MNPs) was successfully synthesized and characterized by transmission electron microscopy, the nitrogen adsorption–desorption isotherm and X-ray photoelectron spectroscopy. The results showed that Fe3O4 magnetic core was shelled… read more here.

Keywords: metal ions; cysteine functionalized; functionalized magnetic; graphite furnace ... See more keywords
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Accurate Determination of Trace Cadmium in Soil Samples with Graphite Furnace Atomic Absorption Spectrometry Using Metal–Organic Frameworks as Matrix Modifiers

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Published in 2022 at "Applied Spectroscopy"

DOI: 10.1177/00037028221141709

Abstract: Cadmium (Cd) is a highly toxic heavy metal that is widely distributed in soils at low concentrations. Its volatilization loss occurs at an ashing temperature higher than 350 °C. Accordingly, the accurate determination of its… read more here.

Keywords: atomic absorption; graphite furnace; spectroscopy; accurate determination ... See more keywords
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Magnetic Torus Microreactor as a Novel Device for Sample Treatment via Solid-Phase Microextraction Coupled to Graphite Furnace Atomic Absorption Spectroscopy: A Route for Arsenic Pre-Concentration

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27196198

Abstract: This work studied the feasibility of using a novel microreactor based on torus geometry to carry out a sample pretreatment before its analysis by graphite furnace atomic absorption. The miniaturized retention of total arsenic was… read more here.

Keywords: atomic absorption; graphite furnace; spectroscopy; geometry ... See more keywords
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Rapid, Simultaneous, and Automatic Determination of Lead and Cadmium in Cereals with a New High Performance Composite Hollow Cathode Lamp Coupled to Graphite Furnace Atomic Absorption Spectrometry

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27238571

Abstract: A simple, rapid, sensitive, accurate, and automatic graphite furnace atomic absorption spectrometry (GFAAS) method for detecting Cd and Pb in cereals is presented. This method enables the simultaneous determination of Cd and Pb in cereals… read more here.

Keywords: atomic absorption; graphite furnace; furnace atomic; determination ... See more keywords