Results 21 to 30 of about 10,964 (180)

Determination of the chemical composition of tea by chromatographic methods: a review [PDF]

open access: yes, 2015
Despite the fact that mankind has been drinking tea for more than 5000 years, its chemical composition has been studied only in recent decades. These studies are primarily carried out using chromatographic methods.
Combet, Emilie   +3 more
core   +1 more source

Determination of Mercury(II) on A Centrifugal Microfluidic Device Using Ionic Liquid Dispersive Liquid−Liquid Microextraction

open access: yesMicromachines, 2019
An integrated centrifugal microfluidic device was developed to preconcentrate and detect hazardous mercury (II) in water with ionic liquid as environmentally friendly extractant.
Yun Hui   +6 more
doaj   +1 more source

Development of an ionic liquid-based dispersive liquid–liquid microextraction method for the determination of nifurtimox and benznidazole in human plasma [PDF]

open access: yes, 2013
Dispersive ionic liquid–liquid microextraction combined with liquid chromatography and UV detection was used for the determination of two antichagasic drugs in human plasma: nifurtimox and benznidazole.
Altcheh, Jaime Marcelo   +5 more
core   +2 more sources

Tungsten coil atomic emission spectrometry combined with dispersive liquid–liquid microextraction: A synergistic association for chromium determination in water samples [PDF]

open access: yes, 2016
A novel and environment friendly analytical method is reported for total chromium determination and chromium speciation in water samples, whereby tungsten coil atomic emission spectrometry (WCAES) is combined with in situ ionic liquid formation ...
Canals, Antonio   +3 more
core   +2 more sources

Combination of saponification and dispersive liquid–liquid microextraction for the determination of tocopherols and tocotrienols in cereals by reversed-phase high-performance liquid chromatography [PDF]

open access: yes, 2013
A simple sample preparation technique coupled with reversed-phase high-performance liquid chromatography was developed for the determination of tocopherols and tocotrienols in cereals. The sample preparation procedure involved a small-scale hydrolysis of
Mohd Ghazali, Hasanah   +3 more
core   +5 more sources

Liquid-phase microextraction of polycyclic aromatic hydrocarbons: A review

open access: yesReviews in Analytical Chemistry, 2020
Polycyclic aromatic hydrocarbons (PAHs) are a large group of organic compounds comprised of two or more fused benzene rings, which arise from the incomplete combustion of organic materials. These compounds have been of concern as carcinogens and mutagens
Jalili Vahid   +2 more
doaj   +1 more source

Extraction and Determination of Crocin in Saffron Samples by Dispersive Liquid-Liquid Microextraction [PDF]

open access: yesZirā̒at va Fanāvarī-i Za̒farān, 2016
The main component responsible for color in saffron is crocin with the chemical formula of C44H64O24. Crocin is one of several carotenoids in nature that is soluble in water. This solubility is one of the reasons for its widespread usage as a colorant in
Somayeh Heydari, Maryam Khalili
doaj   +1 more source

Therapeutic Drug Monitoring and Methods of Quantitation for Carbamazepine [PDF]

open access: yes, 2017
Carbamazepine is an early anticonvulsant still used today in the treatment of several forms of epilepsy. An active metabolite in the human body contributes to its pharmacological effect.
Ana Vlasceanu   +7 more
core   +4 more sources

Screen-printed electrode-based electrochemical detector coupled with in-situ ionic-liquid-assisted dispersive liquid–liquid microextraction for determination of 2,4,6-trinitrotoluene [PDF]

open access: yes, 2013
A novel method is reported, whereby screen-printed electrodes (SPELs) are combined with dispersive liquid–liquid microextraction. In-situ ionic liquid (IL) formation was used as an extractant phase in the microextraction technique and proved to be a ...
Banks, Craig E.   +5 more
core   +2 more sources

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