Yu, Linling Li, Changsen Liu, Yang Sun, Yan
Published in
Journal of chromatography. A
Grafting functional polymer chains onto porous resins has been found to drastically increase both adsorption capacity and uptake rate in protein chromatography. In this work, 2-aminoethyl methacrylate (AEM) was used for grafting onto Sepharose FF gel, and six anion-exchangers of different polyAEM (pAEM) chain lengths (ionic capacities, ICs), FF-pAE...
Wang, Zhendong Wang, Xinran Wang, Yuhan Wu, Cuiling Zhou, Jinhui
Published in
Journal of chromatography. A
An effective sample pretreatment method followed by liquid chromatography tandem mass spectrometry (LC-MS/MS) was first developed for simultaneous determination of five antiviral drug residues including ribavirin, moroxydine, amantadine, rimantadine and memantine in honey. To adsorb analytes with different binding properties and overcome the interf...
Zhang, Xu-Bo Hu, Zhan-Bo Chai, Xin-Sheng Zhong, Guang-Zhi Ouyang, Xiao Li, Pei-Yi
Published in
Journal of chromatography. A
This paper reported a headspace gas chromatography (HS-GC) for the determination of denitrifying enzyme activity in soil samples. It was based on measuring the NO2 signal in a set of closed/air-free vials containing soil samples that incubated at the designated conditions. The results showed that the method has a good measurement precision (RSD
Jin, Gaowa Ding, Junjie Zhou, Yongzheng Xia, Donghai Guo, Zhimou Liang, Xinmiao
Published in
Journal of chromatography. A
A silica based hydrophilic stationary phase bonding with 2,3-pyrazinedicarboxylic anhydride and amino groups was synthesized via amino-acid anhydride ring opening reaction. The bonded groups could not only provide hydrophilic interaction, but also electrostatic, π-π and hydrogen bonding interactions, etc. The results of characterization with elemen...
Lestido-Cardama, Antía Vázquez Loureiro, Patricia Sendón, Raquel Paseiro Losada, Perfecto Rodríguez Bernaldo de Quirós, Ana
Published in
Journal of chromatography. A
Major type of internal can coating used for food and beverages is made from epoxy resins, which contain among their components bisphenol A (BPA) or bisphenol A diglycidyl ether (BADGE). These components can be released and contaminate the food or beverage. There is no specific European legislation for coatings, but there is legislation on specific ...
Yang, Yanli Yu, Mengran Ma, Guanghui Su, Zhiguo Zhang, Songping
Published in
Journal of chromatography. A
Two commercially available agarose ion exchange media, DEAE-Capto and DEAE-Sepharose FF (DEAE-FF), and two gigaporous media DEAE -AP-120 nm and DEAE-AP-280 nm were evaluated for their applicability in adsorption of five proteins with large span of radius ranges from 2.9 nm to 14.1 nm, which include ovalbumin, bovine serum albumin (BSA), haptoglobin...
Do, Thi Kieu Tiên Schmid, Marco Phanse, Manjusha Charegaonkar, Akshay Sprecher, Hanspeter Obkircher, Markus Reich, Eike
Published in
Journal of chromatography. A
The use of chromatographic methods in routine analysis includes System Suitability Tests (SST). This paper presents a novel approach to SST in HPTLC, which allows qualification of the entire RF range of an HPTLC plate independently of the samples. It is based on the Universal HPTLC mix (UHM), a pre-defined mixture of eight reference substances: gua...
Yu, Linling Sun, Yan
Published in
Journal of chromatography. A
The strategy of using polymer-grafted media is effective to create protein chromatography of high capacity and uptake rate, giving rise to an excellent performance in high-throughput protein separation due to its high dynamic binding capacity. Taking the scientific development and technological innovation of protein chromatography as the objective,...
Caldeirão, Lucas Fernandes, José O Gonzalez, Mario Henrique Godoy, Helena Teixeira Cunha, Sara C
Published in
Journal of chromatography. A
Ready-to-drink teas can provide, if properly packaged, the taste and wellness character of traditional teas. Nevertheless, in tea processing, there may be several contaminations, among which polycyclic aromatic hydrocarbons (PAHs), anthropogenic contaminants that can present carcinogenic and mutagenic properties. In this work, a novel low-density d...
Gujar, Rajesh B Ansari, Seraj A Mohapatra, Prasanta K
Published in
Journal of chromatography. A
A dialkyl amide with branched alkyl group, viz. N,N-di(2-ethylhexyl)-propionamide (D2EHPrA) was used as the organic extractant in an extraction chromatographic resin prepared for the first time and evaluated for the separation of uranium from acidic feeds. The distribution coefficient measurements, carried out at varying HNO3 concentrations, indica...