My watch list
my.chemeurope.com  
Login  

23 Newest Publications about the topic hilic columns

rss

You can refine your search further. Select from the filter options on the left to narrow down your results.

Comparison of ultra high performance supercritical fluid chromatography, ultra high performance liquid chromatography, and gas chromatography for the separation of synthetic cathinones

06-Jul-2017 | Stephanie Carnes, Stacey O'Brien, Angelica Szewczak, Lauriane Tremeau‐Cayel, Walter F. Rowe, Bruce McCord, Ira S. Lurie, Journal of Separation Science, 2017

A comparison of ultra high performance supercritical fluid chromatography, ultra high performance liquid chromatography, and gas chromatography for the separation of synthetic cathinones has been conducted. Nine different mixtures of bath salts were analyzed in this study. The three different ...

more

Modeling of HILIC retention behavior with theoretical models and new spline interpolation technique

20-Jun-2017 | Anja Tumpa, Stefan Mišković, Zorica Stanimirović, Biljana Jančić‐Stojanović, Mirjana Medenica, Journal of Chemometrics, 2017

When it is taken into account that hydrophilic interaction liquid chromatography (HILIC) as an analytical method is relatively young compared with the other techniques, retention modeling could still bring scientifically valuable data to the field. Therefore, in this paper, olanzapine and its 8 ...

more

Ultrasound‐assisted Extraction with LC–TOF/MS Identification and LC–UV Determination of Imazamox and its Metabolites in Leaves of Wheat Plants

10-Aug-2013 | Antonia M. Rojano‐Delgado, Feliciano Priego‐Capote, Rafael De Prado, María Dolores Luque Castro, Phytochemical Analysis, 2013

ABSTRACT Introduction imazamox is a herbicide used in many legominous and cereal crops. There are few methods in the literature for determination of imazamox and its metabolites in plants because of the lack of commercial standards or owing to expensive and/or complex ...

more

Evaluation of matrix effects in different multi‐pesticide residue analysis methods using liquid chromatography – tandem mass spectrometry, including an automated two‐dimensional clean‐up approach

07-May-2013 | Stefan Kittlaus, Günther Kempe, Karl Speer, Journal of Separation Science, 2013

Pesticide residue analysis is an important part of food quality control. Three of the most widely used methods are the DFG S19 (extraction with acetone), the ChemElut method (extraction with methanol) and QuEChERS (acetonitrile‐based). Despite many developments in the field of sample ...

more

Determination of metabolites of 5‐hydroxymethylfurfural in human urine after oral application

20-Nov-2012 | Magdalena Hardt‐Stremayr, Serena Mattioli, Joachim Greilberger, Phillip Stiegler, Veronika Matzi, Martin G. Schmid, ..., Journal of Separation Science, 2012

5‐Hydroxymethylfurfural is a natural occurring substance taken up by everyday food. In former studies it was shown that 5‐HMF is completely decomposed in the body after oral or intravenous application resulting in three main metabolites named 5‐hydroxymethylfuroic acid, 2,5‐furandicarboxylic ...

more

Development and validation of an HPLC method to determine metabolites of 5‐hydroxymethylfurfural (5‐HMF)

03-Sep-2012 | Magdalena Hardt‐Stremayr, Marketa Bernaskova, Stefanie Hauser, Olaf Kunert, Xinghua Guo, Janette Stephan, Josef Spre ..., Journal of Separation Science, 2012

The food component 5‐hydroxymethylfurfural is supposed to have antioxidative properties and is therefore used as an acting agent in a novel anticancer infusion solution, named Karal®, and an oral supplementation. Previous studies showed that after oral and intravenous application, the substance ...

more

Rapid Determination of Chlormequat in Meat by Dispersive Solid-Phase Extraction and Hydrophilic Interaction Liquid Chromatography (HILIC)–Electrospray Tandem Mass Spectrometry

25-Jun-2012 | Chunmei Li; Fen Jin; Zhiyong Yu; Yamei Qi; Xiaomei Shi; Miao Wang; Hua Shao; Maojun Jin; Jing Wang; Mingqi Yang, Journal of Agricultural and Food Chemistry, 2012

A rapid method for analyzing trace levels of chlormequat (CQ) in meat samples by hydrophilic interaction liquid chromatography (HILIC)–electrospray tandem mass spectrometry was developed. The samples were extracted with acetonitrile, followed by a rapid cleanup through a dispersive solid-phase ...

more

Behavior and Retention Models of Melamine and Its Hydrolysis Products

07-Apr-2012 | Maroula G. Kokotou, Nikolaos S. Thomaidis, Chromatographia, 2012

The retention behavior of melamine (MEL), ammeline (AMN), ammelide, and cyanuric acid on various hydrophilic interaction liquid chromatography (HILIC) stationary phases was studied. Using fully optimized electrospray conditions and ammonium formate buffer pH 4/acetonitrile (20:80 v/v) as a mobile ...

more

Optimization of a solid phase extraction and hydrophilic interaction liquid chromatography–tandem mass spectrometry method for the determination of metformin in dietary supplements and herbal medicines

12-Mar-2012 | Ximei Wu, Binghui Zhu, Lin Lu, Weixiong Huang, Daiwen Pang, Food Chemistry, 2012

Metformin is one of the most common adulterants found in anti-diabetic dietary supplements and herbal medicines. An analytical method based on hydrophilic interaction chromatography (HILIC)/tandem mass spectrometry was developed and validated for the determination of metformin in dietary ...

more

Evaluation of Coupling Reversed Phase, Aqueous Normal Phase, and Hydrophilic Interaction Liquid Chromatography with Orbitrap Mass Spectrometry for Metabolomic Studies of Human Urine

01-Feb-2012 | Tong Zhang; Darren J. Creek; Michael P. Barrett; Gavin Blackburn; David G. Watson, Analytical Chemistry, 2012

In this study, we assessed three liquid chromatographic platforms: reversed phase (RP), aqueous normal phase (ANP), and hydrophilic interaction (HILIC) for the analysis of polar metabolite standard mixtures and for their coverage of urinary metabolites. The two zwitterionic HILIC columns showed ...

more

Page 1 From 3
Subscribe to e-mail updates relating to your search

You will receive via e-mail the latest search results matching your search criteria. This service is free of charge and can be cancelled at any time.

Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE