Results 31 to 40 of about 23,900 (225)

New sorbents for extraction and microextraction techniques

open access: yesJournal of Chromatography A, 2010
This review outlines recent progress in the research on some new classes of sorbents for extraction and microextraction techniques. Carbon nanotubes are allotropes of carbon with cylindrical structure. They are very stable systems having considerable chemical inertness due to the strong covalent bonds of the carbon atoms on the nanotube surface.
Fabio, Augusto   +5 more
openaire   +2 more sources

An optimized analytical method for the simultaneous detection of iodoform, iodoacetic acid, and other trihalomethanes and haloacetic acids in drinking water [PDF]

open access: yes, 2013
An optimized method is presented using liquid-liquid extraction and derivatization for the extraction of iodoacetic acid (IAA) and other haloacetic acids (HAA9) and direct extraction of iodoform (IF) and other trihalomethanes (THM4) from drinking water ...
He, G   +6 more
core   +3 more sources

Analysis of imidazoles and triazoles in biological samples after MicroExtraction by packed sorbent [PDF]

open access: yes, 2017
This paper reports the MEPS-HPLC-DAD method for the simultaneous determination of 12 azole drugs (bifonazole, butoconazole, clotrimazole, econazole, itraconazole, ketoconazole, miconazole, posaconazole, ravuconazole, terconazole, tioconazole and ...
Bellagamba, Giuseppe   +9 more
core   +3 more sources

An easily prepared graphene oxide-ionic liquid hybrid nanomaterial for micro-solid phase extraction and preconcentration of Hg in water samples [PDF]

open access: yes, 2018
A preconcentration method based on the use of graphene oxide (GO) functionalized with an ionic liquid (IL) was developed for trace Hg determination in water samples.
Cruz Sotolongo, Annaly   +2 more
core   +1 more source

Recent Insights into Sample Pretreatment Methods for Mycotoxins in Different Food Matrices: A Critical Review on Novel Materials

open access: yesToxins, 2023
Mycotoxins pollution is a global concern, and can pose a serious threat to human health. People and livestock eating contaminated food will encounter acute and chronic poisoning symptoms, such as carcinogenicity, acute hepatitis, and a weakened immune ...
Yu Bian   +4 more
doaj   +1 more source

Microextraction Techniques in Illicit Drug Testing: Present and Future [PDF]

open access: yesBioanalysis, 2016
Sample preparation is of utmost importance in both qualitative and quantitative analysis of illicit drugs because complex matrices, such as biological specimens, are involved in the assay. In forensic toxicology, the analysis is typically performed on biological fluids such as urine, serum and plasma.
Montesano, Camilla, Sergi, Manuel
openaire   +2 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

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

Recent elaborations in electromembrane microextraction technique for preconcentration of chromium species: A mini-review

open access: yesAdvances in Sample Preparation, 2023
In recent years, electromembrane microextraction techniques have been used widely for the analysis of chromium species (trivalent and hexavalent chromium) in different environmental matrices.
Waleed Alahmad   +2 more
doaj   +1 more source

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

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