micro extraction d or

    • Optimisation of a headspace-solid-phase micro-extraction ...

      The analytical method is based on the ethylation with NaBEt 4 and simultaneous headspace-solid-phase micro-extraction of the derivative compounds followed by GC–MS/MS analysis. The main experimental parameters influencing the extraction efficiency such as derivatisation time, extraction time and extraction temperature were optimized.

    • Dispersive micro-solid phase extraction | Request PDF

      Dispersive micro-solid phase extraction (D-μ-SPE) has gained special attention in the sample preparation process due to its simplicity, speed and efficiency.

    • Dispersive liquid–liquid micro extraction of uranium(vi ...

      Dispersive liquid–liquid micro extraction of uranium(VI) from groundwater and seawater samples and determination by inductively coupled plasma– optical emission spectrometry and flow injection– inductively coupled plasma mass spectrometry. K. Chandrasekaran, D. Karunasagar and J. Arunachalam, Anal.

    • Application of an MOF-based dispersive micro solid phase ...

      The current study aims at the extraction and preconcentration of some plasticizers, including dimethyl phthalate, diethyl phthalate, di-iso-butyl phthalate, di-n-butyl phthalate, di-(2-ethylhexyl) adipate, and di-iso-octyl phthalate, migrated into different samples (mineral water, injection serum, orange juice, and carbonated soft drink) using MIL-68 (Al) in a dispersive micro solid phase ...

    • Development of dispersive micro-solid phase extraction ...

      2017-4-1 · More recently, dispersive micro-solid phase extraction (D-μ-SPE) has been widely developed as a simple and miniaturized modification of DSPE that can be applied to extract and enrich the quinolones, tetracyclines, organophosphate pesticides, polycyclic aromatic hydrocarbons (PAHs), triazines, heavy metal ions, semi-volatile compounds, organic UV filters and nitroaromatic …

    • Determination of 2, 4-D in Water Samples by Salting-Out ...

      2015-4-2 · and capillary electrophoresis [8]. However, the concentration of 2,4-D in samples is very low and the matrix of some samples are complex. In all the above work, many extraction methods such as dispersive liquid–liquid micro extraction (DLLME) [3], molecularly imprinted solid phase

    • Dispersive micro-solid phase extraction | Request PDF

      Dispersive micro-solid phase extraction (D-μ-SPE) has gained special attention in the sample preparation process due to its simplicity, speed and efficiency. Different dispersion approaches have ...

    • Optimization of Headspace Solid-Phase Micro-extraction …

      2016-8-19 · Headspace solid-phase micro-extraction (HS-SPME) is well recognized as an effective volatile isolation method with influencing factors such as extraction temperature, exposure time, sample matrix, and in particular, the selectivity of SPME fibre (Zhang and Pawliszyn 1993; Yu et al. 2008; Balasubramanian and Panigrahi 2011).

    • Performance comparison between solid phase extraction …

      2021-9-24 · Dispersive-micro solid phase extraction (d-µSPE) has gained increasing attention due to its convenience, effectiveness, and flexibility for sorbent selection. Among a various selection of materials, magnetic carbon nanotubes (Mag-CNTs) is a promising d-µSPE sorbent with excellent separation efficiency in addition to its high surface area and adsorption capability.

    • Dispersive liquid–liquid micro-extraction for simultaneous ...

      This paper reports on the simultaneous extraction and preconcentration of 14 lanthanide (rare earth) elements in groundwater by a dispersive liquid–liquid microextraction (DLLME) method and their determination by inductively coupled plasma quadrupole mass spectrometry (ICP-QMS). A low flow rate (200 μL min −1) SeaSpray™ micro-flow nebulizer was used for the sample introduction.

    • Liquid-phase Micro-extraction Technique and Its …

      Liquid-phase micro-extraction(LPME) operation modes were classified based on the organic solvent state,the LPME equipment characteristics and the partition phase number.For each LPME operation mode,the recent developments of liquid phase micro

    • A Dispersive Liquid-Liquid Micro-Extraction Technique for ...

      A Dispersive Liquid-Liquid Micro-Extraction Technique for the Pre-concentration and Quantification of Vitamin D 3 in Milk and Yogurt Samples Using a Non-Aqueous HPLC Method Iran J Pharm Res. Spring 2019;18(2):677-685. doi: 10.22037/ijpr.2019.1100634. Authors Maryam Ghalebi ...

    • Ce–Nd separation by solid-phase micro-extraction and its ...

      In view of the low initial abundance of 146 Sm, 142 Nd anomalies are expected to be extremely small (less than 40 ppm), and their detection requires ultra-precise 142 Nd/ 144 Nd measurements. A rapid solid-phase micro-extraction (SPME) technique, using HEHEHP resin as sorbent, is established to completely separate Ce from rare earth element (REE) mixtures.

    • Algérie : extraction de 100 tonnes d''or brut par des micro ...

      2021-6-18 · Il a en outre fait savoir que les nouvelles extractions ont été collectées par plusieurs micro-entreprises minières et aurifères, qui se sont vues, au cours des dernières années, attribuer des permis de recherches de la très précieuse ressource naturelle. Extraction de 100 tonnes d''or : un travail de 45 entreprises sur un total de 200

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