Results 91 to 100 of about 10,964 (180)

Dispersive Liquid–Liquid Chelate Microextraction of Rare Earth Elements: Optimization and Greenness Evaluation

open access: yesMetals
An ultrasound-assisted dispersive liquid–liquid microextraction (DLLME) method was developed to concentrate and quantify rare earth elements (REEs) (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) in acidic aqueous solutions ...
Milica Delić   +4 more
doaj   +1 more source

The role of GC-MS/MS with triple quadrupole in pesticide residue analysis in food and the environment [PDF]

open access: yes, 2013
Gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) using a triple quadrupole (QqQ) analyzer has in the last few years become a powerful technique for the determination of pesticide residues due to its robustness, and excellent sensitivity ...
Beltran Arandes, Joaquin   +4 more
core   +1 more source

Electrokinetic Supercharging In Capillary Electrophoresis For The On-Line Preconcentration Of Secbumeton In Water Samples [PDF]

open access: yes, 2017
Dalam kajian ini, suatu kaedah prapemekatan disebut superpengecasan elektrokinetik elektroforesis zon rerambut (EKS-CZE) telah dibangunkan bagi penentuan sekbumeton (SEC) di dalam sampel air sekitaran In this study, an on-line preconcentration method ...
Soeung, Rasmey
core  

Rapid analysis of triclosan in water samples using an in-tube ultrasonication assisted emulsification microextraction coupled with gas chromatography-electron capture detection [PDF]

open access: yes, 2013
In this study, a new in-tube based ultrasound-assisted emulsification microextraction (IT-USAEME) technique coupled with gas chromatography-micro-electron capture detection (GC-μECD) was developed for the efficient and rapid analysis of triclosan in ...
Abilasha Ramkumara   +4 more
core   +1 more source

Cyclic voltammetry : a tool to quantify 2,4,6-trichloroanisole in aqueous samples from cork planks boiling industrial process [PDF]

open access: yes, 2013
Chloroanisoles, namely 2,4,6-trichloroanisole, are pointed out as the primary responsible of the development of musty off-flavours in bottled wine, due to their migration from cork stoppers, which results in huge economical losses for wine industry.
Ana C.A. Veloso   +55 more
core   +1 more source

Dispersive solid phase extraction based on butylamide silica for determination of sulfamethoxazole in milk samples by capillary electrophoresis [PDF]

open access: yes, 2016
A new method based on the combination of dispersive solid-phase extraction and capillary electrophoresis is proposed for the determination of sulfamethoxazole in milk samples. Butylamide silica was synthesized and used as extractant.
Barrado Esteban, Enrique   +5 more
core   +1 more source

Simultaneous determination of 13 priority polycyclic aromatic hydrocarbons in Tehran’s tap water and water for injection samples using dispersive liquid-liquid micro extraction method and gas chromatography-mass spectrometry [PDF]

open access: yes, 2016
Polycyclic aromatic hydrocarbons (PAHs) are classified as persistent and carcinogenic organic pollutants. PAHs contamination has been reported in water.
Bayate, Mitra.   +4 more
core   +1 more source

Thin-layer chromatography: An efficient method for the optimization of dispersive liquid-liquid microextraction

open access: yesActa Chimica Slovenica, 2018
Thin-layer chromatography (TLC) is an often omitted analytical technique due to its lower sensitivity and separation capacity. Even in the era of high-performance liquid chromatography (HPLC), thin-layer chromatography still offers many advantages, such ...
Elena Kupcova   +2 more
doaj   +1 more source

Gelatin-alginate coated cellulose acetate membrane for the extraction of heavy metal ions from water samples [PDF]

open access: yes, 2015
Heavy metal ions are a common water pollutant from industrialized areas and extraction is one of the most popular methods to remove the target analytes. However, extraction and determination of metal ions in water are often very difficult to perform due ...
Amanda, Eviomitta Rizki   +3 more
core  

Spectrophotometric determination of Sudan Blue II in environmental samples after dispersive liquid-liquid microextraction

open access: yesQuímica Nova, 2014
A dispersive liquid-liquid microextraction procedure coupled to spectrophotometry is described for the determination of the trace levels of Sudan Blue II.
Yunus Emre Unsal   +2 more
doaj   +1 more source

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