Kobelt, Tim Lippmann, Martin Wuttke, Jannik Wessel, Hanno Zimmermann, Stefan
Published in
Journal of chromatography. A
In this work, the influence of the sample gas flow rate and the ionization region volume of an ion mobility spectrometer (IMS) used as a detector in gas chromatography (GC) on GC-IMS peak shape has been investigated. Therefore, a drift tube IMS with a field-switching ion shutter, a defined ionization region volume and an ultra-violet radiation sour...
Recepoğlu, Yaşar Kemal Arar, Özgür Yüksel, Aslı
Published in
Journal of chromatography. A
In batch-scale operations, biosorption employing phosphorylated hazelnut shell waste (FHS) revealed excellent lithium removal and recovery efficiency. Scaling up and implementing packed bed column systems necessitates further design and performance optimization. Lithium biosorption via FHS was investigated utilizing a continuous-flow packed-bed col...
Lu, Zhongdeng Chen, Zulin Ping, Hongwei Chen, Honghan Chen, Xu
Published in
Journal of chromatography. A
The concentration of carbazoles in highly mature crude oil is quite low, making it challenging to separate carbazole compounds for the gas chromatography-mass spectrometry (GC-MS) detection. This study presents a small-scale column chromatography method for separating carbazoles from highly mature crude oil using silica gel as a solid phase adsorbe...
Hu, Kai Pang, Tiantian Yang, Cheng Han, Pengzhao Li, Lixin Wang, Pan Zhang, Zhenqiang Zhao, Wenjie Zhang, Shusheng
Published in
Journal of chromatography. A
Urinary hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) and catecholamines (CAs) are important biomarkers of PAHs exposure. In this study, a novel magnetic boronic acid hypercrosslinked composite (Fe3O4@HCP-BA) is synthesized using a facile one-pot strategy and applied as a sorbent for the simultaneous extraction of OH-PAHs and CAs in urine...
Khodarahmian, Kobra Ghiasvand, Alireza Barkhordari, Abdullah
Published in
Journal of chromatography. A
In-situ electropolymerization of conductive polymers on the surface of stainless-steel substrates is a well-established but promising procedure for the preparation of solid-phase microextraction (SPME) tools. Herein, different electrochemical methods including constant potential (CP), constant potential pulse (CPP), and cyclic voltammetry (CV) were...
Laptev, A Yu Rozhmanova, N B Nesterenko, P N
Published in
Journal of chromatography. A
The chromatographic retention of carbohydrates on chelating stationary phase loaded with different metal ions was studied under conditions of hydrophilic interaction chromatography (HILIC). The chelating stationary phases represented silica microparticles with immobilized 2-hydroxyethyliminodiacetic acid (HEIDA) groups in loose form and saturated w...
Arndt, Jan-Hendrik Macko, Tibor Vanderfeesten, Joep Verhoogt, Henk Brüll, Robert
Published in
Journal of chromatography. A
As commodity plastics, polyolefins are in high demand and used in innumerable applications. An important reason for their success-story is their high versatility in terms of applications. The application range of polyolefins was significantly extended through the development of functionalization. A common functionalization for improving the compati...
Kochale, Kjell Cunha, Ricardo Teutenberg, Thorsten Schmidt, Torsten C
Published in
Journal of chromatography. A
Trace substances in surface waters may threaten health and pose a risk for the aquatic environment. Moreover, separation and detection by instrumental analysis is challenging due to the low concentration and the wide range of polarities. Separation of polar and nonpolar analytes can be achieved by using stationary phases with different selectivity....
Wu, Guangyao Lu, Feng Zhao, Jiali Feng, Xin Ren, Yujuan Hu, Songtao Yu, Wenjing Dong, Biao Hu, Lianghai
Published in
Journal of chromatography. A
Exosomes, also known as small extracellular vesicles, are widely present in a variety of body fluids (e.g., blood, urine, and saliva). Exosomes are becoming an alternative promising source of diagnostic markers for disease rich in cargo of metabolites, proteins, and nucleic acids. However, due to the low abundance and structure similarity with prot...
Huang, Weixiong Stamos, Brian N
Published in
Journal of chromatography. A
We report a battery powered non-suppressed open tubular ion chromatograph (NSOTIC) that weighs less than 3 kg with on-board rechargeable lithium-ion batteries that provide power for 18 h of operation. It is contained in an aluminum case measuring 30 × 25 × 16 cm. Separation relies on open tubular (OT) chromatographic columns which eliminate the nee...
