Results 31 to 40 of about 528,026 (297)

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

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

Comparison of Directly Suspended Drop Microextraction with Dispersive Liquid-liquid Microextraction Method for Extraction of Doxepin in Water and Biological Samples Prior to UV-Vis Spectrophotometer [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2020
The present research describes the use of directly suspended drop microextraction and air-assisted dispersive liquid-liquid microextraction method coupled with UV-Vis spectrophotometer for the analysis of doxepin in water and biological samples.
Samaneh Khani, Farideh Mofazzeli
doaj   +1 more source

The comparison of two microextraction methods for the determination of safranal from Iranian saffron

open access: yesGreen Analytical Chemistry, 2022
In this study, safranal as the main component of the pleasant aroma of saffron was extracted and analyzed by two liquid-phase microextraction based methods, namely ultrasound-assisted emulsification microextraction and solidified floating organic drop ...
Mohammad Beiranvand, Alireza Ghiasvand
doaj   +1 more source

Innovative Solutions for Food Analysis: Microextraction Techniques in Lipid Peroxidation Product Detection

open access: yesSeparations, 2023
Lipid peroxidation, the most aggressive reaction in food, results in the formation of reactive organic compounds that detrimentally impact food sensory qualities and consumers’ health.
Jorge A. Custodio-Mendoza   +2 more
doaj   +1 more source

Chemical derivatization processes applied to amine determination in samples of different matrix composition [PDF]

open access: yes, 2015
No abstract ...
Biziuk, Marek   +3 more
core   +1 more source

Determination of pesticides in fruit and fruit juices by chromatographic methods. An overview [PDF]

open access: yes, 2011
In order to combat a variety of pests, pesticides are widely used in fruits. Several extraction procedures (liquid extraction, single drop microextraction, microwave-assisted extraction, pressurized liquid extraction, supercritical fluid extraction ...
Delerue-Matos, Cristina   +3 more
core   +1 more source

Liquid phase microextraction techniques combined with chromatography analysis: a review

open access: yesActa Chromatographica, 2020
Sample pretreatment is the first and the most important step of an analytical procedure. In routine analysis, liquid–liquid microextraction (LLE) is the most widely used sample pre-treatment technique, whose goal is to isolate the target analytes ...
S. Dugheri   +8 more
semanticscholar   +1 more source

Principais técnicas de preparo de amostra para a determinação de resíduos de agrotóxicos em água por cromatografia líquida com detecção por arranjo de diodos e por espectrometria de massas

open access: yesQuímica Nova, 2011
The determination of pesticide residues in water samples by Liquid Chromatography require sample preparation for extraction and enrichment of the analytes with the minimization of interferences to achieve adequate detection limits.
Sergiane Souza Caldas   +5 more
doaj   +1 more source

Recent Advances in Applications of Ionic Liquids in Miniaturized Microextraction Techniques

open access: yesMolecules, 2018
Green sample preparation is one of the most challenging aspects in green analytical chemistry. In this framework, miniaturized microextraction techniques have been developed and are widely performed due to their numerous positive features such as ...
Maria Kissoudi, Victoria Samanidou
doaj   +1 more source

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