4.7 Article

Direct immersion dual-drop microextraction for simultaneous separation and enrichment of Cr(III) and Cr(IV) in food samples prior to graphite furnace atomic absorption spectrometry detection

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Chemistry, Analytical

Dual In-Syringe Microextraction with Electrothermal Vaporization (ETV) Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) for Determination of Rare Earth Elements (REEs) in Food

Shizhong Chen et al.

Summary: In this study, the combination of IS-MSPE and IS-VA-SFODME technologies was used for the determination of REEs by ETV-ICP-MS, showing high efficiency and good selectivity without tedious operations, and the results were in agreement with certified values.

ANALYTICAL LETTERS (2022)

Article Chemistry, Applied

In-syringe solid phase extraction and in-syringe vortex-assisted solidified floating organic drop microextraction of Sb(III) and Sb(V) in rice wines with determination by graphite furnace atomic absorption spectrometry

Shizhong Chen et al.

Summary: In this study, a new method combining in-syringe solid phase extraction (IS-SPE) with in-syringe vortex-assisted solidified floating organic drop microextraction (IS-VA-SFODME) was developed for the detection of Sb(V) and Sb(III) in rice wines. The method showed efficient and low-contamination characteristics, and achieved satisfactory detecting results in the samples.

FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT (2022)

Article Chemistry, Analytical

Speciation of As(III) and As(V) in Food by Magnetic Dispersive Microsolid Phase Extraction with Dispersive Liquid-Liquid Microextraction with Graphite Furnace Atomic Absorption Spectrometry (GFAAS) Detection

Shizhong Chen et al.

Summary: The combination of MDMSPE and DLLME was utilized for the separation and preconcentration of arsenic(III) and arsenic(V), showing good recoveries and analytical results in dairy products analysis.

ANALYTICAL LETTERS (2022)

Review Chemistry, Analytical

Use of green alternative solvents in dispersive liquid-liquid microextraction: A review

Jose Grau et al.

Summary: Dispersive liquid-liquid microextraction is a widely used technique in analytical chemistry field due to its simplicity and rapidity. The operational mode has evolved over time, with changes mainly related to the nature of solvents used. Low-density solvents, ionic liquids, and other alternatives have been proposed as greener options for this method.

JOURNAL OF SEPARATION SCIENCE (2022)

Article Chemistry, Analytical

Salt-Assisted Bulk Liquid Membrane and Flame Atomic Absorption Spectrometry for the Separation and Determination of Chromium(VI)

Murat Yazar et al.

Summary: A novel and fast salt-assisted bulk membrane extraction (SA-BME) combined with flame atomic absorption spectrometry (FAAS) method was proposed for the separation and preconcentration of Cr(VI) in water samples. The total chromium content in water samples could be successfully determined through a series of steps, and the method showed good recoveries in practical applications.

ANALYTICAL LETTERS (2021)

Article Chemistry, Analytical

Synchronous Extraction and Quantitative Speciation of Arsenic and Chromium in Sediments by High-Performance Liquid Chromatography - Inductively Coupled Plasma - Mass Spectrometry (HPLC-ICP-MS)

Mokgehle R. Letsoalo et al.

Summary: By investigating optimal chromatographic separation conditions, polyatomic ions interference correction, and extraction parameters, successful simultaneous extraction and quantification of As and Cr species was achieved with excellent resolution.

ANALYTICAL LETTERS (2021)

Article Chemistry, Analytical

Fibrous g-C3N4@Tio2 Nanocomposites-Based Dispersive Micro-Solid Phase Extraction for Chromium Speciation in Cow Milk by ICP-MS after Digestion Treatment with Artificial Gastric Juice

Shizhong Chen et al.

Summary: This study developed a method to determine the species of Cr(III) and Cr(VI) in cow milk, with Cr(III) content found to be much higher than Cr(VI) in the digestion solution. The method offers advantages of reduced solvent consumption, less adsorbent dosage, and high extraction efficiency, making it a potentially valuable strategy for elemental species analysis in food samples.

JOURNAL OF AOAC INTERNATIONAL (2021)

Article Chemistry, Analytical

Chromium speciation in organic fertilizer by cloud point extraction and optimization through experimental Doehlert design as support for legislative aspects

Ivero Pita de Sa et al.

Summary: A new method for determining Cr(VI) in organic fertilizers was developed, utilizing adjustments in extraction and cloud point extraction methods to accurately quantify Cr(VI) content and meet regulatory requirements.

MICROCHEMICAL JOURNAL (2021)

Article Chemistry, Applied

Chromium speciation analysis in raw and cooked milk and meat samples by species-specific isotope dilution and HPLC-ICP-MS

Marina Saraiva et al.

Summary: The study found that there was no oxidation of Cr(III) to Cr(VI) during thermal cooking, and different cooking methods did not significantly affect the levels of Cr species. The analysis of samples showed that Cr was exclusively present as Cr(III) species, with no Cr(VI) detected in any of the samples.

FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT (2021)

Article Chemistry, Applied

Determination of Mn(II) and Mn(VII) in beverage samples using magnetic dispersive micro-solid phase extraction coupled with solidified floating organic drop microextraction followed by graphite furnace atomic absorption spectrometry

Shizhong Chen et al.

Summary: MDMSPE coupled with SFODME was used for direct separation and preconcentration of Mn(II) and Mn(VII) before graphite furnace atomic absorption spectrometry. The method provided an enrichment factor of 200-fold with detection limits of 0.005 and 0.007 ng mL-1 for Mn(II) and Mn(VII) respectively. Recovery rates of spike experiments ranged from 92.5 to 106%.

FOOD CHEMISTRY (2021)

Article Chemistry, Analytical

Deep eutectic solvent-based continuous sample drop flow microextraction combined with electrothermal atomic absorption spectrometry for speciation and determination of chromium ions in aqueous samples

Somayeh Fouladlou et al.

Summary: A deep eutectic solvent-based continuous sample drop flow-microextraction technique combined with electrothermal atomic absorption spectroscopy was developed for extracting and measuring chromium speciation in aqueous samples. The method showed good linearity, low limit of detection and quantification, and precision in terms of repeatability and reproducibility. Satisfactory recoveries were obtained when analyzing Cr ion in real samples.

MICROCHEMICAL JOURNAL (2021)

Article Chemistry, Analytical

A novel direct-immersion single-drop microextraction combined with digital colorimetry applied to the determination of vanadium in water

Leane Santos Nunes et al.

Summary: A method based on direct-immersion single-drop microextraction was developed for the determination of vanadium in water. The extraction solvent used was the ionic liquid [C6MIM][PF6], and digital images obtained directly from the solvent drop were used for detection. This method showed high sensitivity and accuracy, with minimal sample volume and waste generation, aligning with the principles of green chemistry.

TALANTA (2021)

Article Chemistry, Applied

Magnetic dispersive micro-solid phase extraction coupled with dispersive liquid-liquid microextraction followed by graphite furnace atomic absorption spectrometry for quantification of Se(IV) and Se(VI) in food samples

Shizhong Chen et al.

Summary: The combination of magnetic dispersive micro-solid phase extraction (MDMSPE) and dispersive liquid-liquid microextraction (DLLME) allowed for efficient enrichment and analysis of Se(IV) and Se(VI). This method showed low detection limits, high enrichment factors, and good performance in food sample analysis.

FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT (2021)

Article Chemistry, Applied

Ultra-trace speciation analysis of Cr(III) and Cr(VI) in rice using species-specific isotope dilution and HPLC-ICP-MS

Marina Saraiva et al.

Summary: The study analyzed rice samples of different origins and colors to clarify the controversy on the presence of Cr(VI) in rice. Results showed that Cr(VI) levels were below quantification limits in all samples, while Cr(III) levels varied between different types of rice.

FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT (2021)

Article Chemistry, Analytical

Improved voltammetric methodology for chromium redox speciation in estuarine waters

Jasmin Padan et al.

ANALYTICA CHIMICA ACTA (2019)

Review Chemistry, Analytical

Dispersive micro-solid phase extraction

Alberto Chisvert et al.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2019)

Review Chemistry, Analytical

Graphene and carbon nanotubes as solid phase extraction sorbents for the speciation of chromium: A review

C. Herrero-Latorre et al.

ANALYTICA CHIMICA ACTA (2018)

Review Chemistry, Analytical

Development of dispersive micro-solid phase extraction based on micro and nano sorbents

Tahere Khezeli et al.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2017)

Article Chemistry, Multidisciplinary

Separation/preconcentration of Cr(VI) with a Modified Single-drop Microextraction Device and Determination by GFAAS

Sandor Kapitany et al.

ACTA CHIMICA SLOVENICA (2017)