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1. Advantage of liquid chromatography with high‐resolution mass spectrometry for the detection of the small and polar molecules trifluoroacetic acid and sulfamic acid

Author:
Seitz, Wolfram; Schulz, Wolfgang; Winzenbacher, Rudi
Source:
Journal of separation science 2018 v.41 no.24 pp. 4437-4448
ISSN:
1615-9306
Subject:
dissociation; hydrophilic interaction chromatography; reversed-phase liquid chromatography; tandem mass spectrometry
Abstract:
... This study addresses the selectivity of liquid chromatography with tandem mass spectrometry for the analysis of the polar analytes trifluoroacetic acid and sulfamic acid in water samples. Such analytes often lack sufficient retention in standard reversed‐phase liquid chromatography and rarely produce mass spectrometry transition products of high diagnostic evidence by collision‐induced dissociatio ...
DOI:
10.1002/jssc.201800723

2. Analysis of volatile components in Dalbergia cochinchinensis Pierre by a comprehensive two‐dimensional gas chromatography with mass spectrometry method using a solid‐state modulator

Author:
Xiang, Zhangmin; Chen, Xiaotian; Zhao, Zhijun; Xiao, Xue; Guo, Pengran; Song, Huacan; Yang, Xi; Huang, Minghua
Source:
Journal of separation science 2018 v.41 no.23 pp. 4315-4322
ISSN:
1615-9306
Subject:
Dalbergia cochinchinensis; acetophenones; benzaldehyde; comprehensive two-dimensional gas chromatography; gas chromatography-mass spectrometry; standard deviation; volatile compounds
Abstract:
... Volatile components in Dalbergia cochinchinensis Pierre were analysed using a comprehensive two‐dimensional gas chromatography with mass spectrometry method featuring a new solid‐state modulator. Compared to one‐dimensional gas chromatography, the number of detected peaks were significantly increased. A total of 45 major compounds were identified in this study and the forward and reverse match fac ...
DOI:
10.1002/jssc.201800636

3. A novel in‐capillary assay for dynamically monitoring fast binding between antibody and peptides using CE

Author:
Wang, Jianhao; Qiu, Lin; You, Ying; Ma, Luping; Zhu, Zhilan; Yang, Li; Wang, Jianpeng; Wang, Xiang; Liu, Li; Liu, Xiaoqian; Chang, Yufeng; Li, Jie; Gao, Liqian; Li, Yong‐Qiang
Source:
Journal of separation science 2018 v.41 no.24 pp. 4544-4550
ISSN:
1615-9306
Subject:
antibodies; capillary electrophoresis; detection limit; dissociation; fluorescence; monitoring; peptides; rapid methods; stoichiometry
Abstract:
... Nowadays, despite numerous techniques available for the detection of antibody–peptide binding, sensitivity and detection limit inflow still remains a major challenge. Herein, we report a strategy for the detection of binding inflow of monoclonal anti‐FLAG M2 antibody and 5,6‐carboxyfluorescein‐labeled FLAG tag in capillary. Antibody and peptides were sequentially injected into the capillary where ...
DOI:
10.1002/jssc.201800946

4. Application of coordination agent in high‐speed counter‐current chromatography for the preparative separation and isolation ginkgolic acids from the sarcotesta of Ginkgo biloba L

Author:
Zhu, Heng; Jiang, Hailong; Yu, Jinqian; Song, Xiangyun; Zhao, Hengqiang; Li, Jingchao; Geng, Yanling; Wang, Daijie
Source:
Journal of separation science 2018 v.41 no.23 pp. 4379-4386
ISSN:
1615-9306
Subject:
Ginkgo biloba; acetates; acetic acid; aluminum; coordination compounds; copper; countercurrent chromatography; electrospray ionization mass spectrometry; ferric chloride; ginkgolic acid; methanol; silver nitrate; solvents; temperature; testa
Abstract:
... An efficient coordination high‐speed counter‐current chromatography method for the preparative separation of ginkgolic acids from the sarcotesta of Ginkgo biloba L was developed. The type, concentration, and mechanism of the coordination agent were investigated. Following the use of four types of metal salts including silver nitrate, copper chloride, ferric chloride, and aluminium nitrate, n‐hepta ...
DOI:
10.1002/jssc.201800637

5. A stable mesoporous metal‐organic framework as highly efficient sorbent of dispersive micro solid‐phase extraction for the determination of polycyclic aromatic hydrocarbons by HPLC

Author:
Xia, Lian; Liu, Lijie; Dou, Yanan; Guo, Lan; Li, Guoliang; Sun, Zhiwei; You, Jinmao
Source:
Journal of separation science 2018 v.41 no.23 pp. 4331-4339
ISSN:
1615-9306
Subject:
adsorption; coordination polymers; detection limit; high performance liquid chromatography; molecular weight; polycyclic aromatic hydrocarbons; porous media; sorbents; standard deviation; surface area; China
Abstract:
... Owing to the large molecular sizes of polycyclic aromatic hydrocarbons, their adsorption using microporous sorbents leads to a low adsorption capacity. Here, to increase the extraction capacity and detection sensitivity of polycyclic aromatic hydrocarbons, a highly efficient dispersive micro solid‐phase extraction method was developed based on a stable mesoporous metal‐organic framework named Jili ...
DOI:
10.1002/jssc.201800775

6. Chromatographic separation, determination and identification of ecdysteroids: Focus on Maral root (Rhaponticum carthamoides, Leuzea carthamoides)

Author:
Głazowska, Joanna; Kamiński, Marcin M.; Kamiński, Marian
Source:
Journal of separation science 2018 v.41 no.23 pp. 4304-4314
ISSN:
1615-9306
Subject:
Rhaponticum carthamoides; chemical structure; high performance liquid chromatography; insects; larvae; pharmaceutical industry; phytoecdysteroids; sports medicine
Abstract:
... The review presents general principles for choosing optimal conditions for ecdysteroid separation, identification, and isolation using HPLC/TLC techniques in RP, NP‐HILIC or NP modes. Analytics of ecdyteroids pose a still insufficiently resolved problem. Plant‐derived ecdysteroids are a point of interest of pharmaceutical industry and sport medicine due to their postulated adaptogenic and anabolic ...
DOI:
10.1002/jssc.201800506

7. Detection of biogenic amines in pet food ingredients by RP‐HPLC with automated dansyl chloride derivatization

Author:
Learey, Jessica J.; Crawford‐Clark, Shona; Bowen, Benjamin J.; Barrow, Colin J.; Adcock, Jacqui L.
Source:
Journal of separation science 2018 v.41 no.24 pp. 4430-4436
ISSN:
1615-9306
Subject:
automation; cadaverine; derivatization; detection limit; food analysis; food industry; food spoilage; histamine; ingredients; meat meal; pet foods; putrescine; reversed-phase high performance liquid chromatography; spermidine; spermine; toxicity; tryptamine; tyramine
Abstract:
... The detection of biogenic amines is of significant interest to the food industry, as they can be used as indicators of food spoilage and they are potentially toxic. Because of their importance, there is a need for automated methods suitable for industry use that can detect a wide range of biogenic amines at sufficient levels for food analysis. In this work, optimized conditions for the automated d ...
DOI:
10.1002/jssc.201800455

8. Diagnostic ion‐oriented identification and simultaneous quantification of chemical components in Allium chinense G. Don

Author:
Qin, Zifei; Lin, Pei; Yao, Zhihong; Chen, Zilin; Yu, Yang; Dai, Yi; He, Xiangjiu; Zhou, Hua; Yao, Xinsheng
Source:
Journal of separation science 2018 v.41 no.23 pp. 4253-4271
ISSN:
1615-9306
Subject:
Allium chinense; Ganoderma lucidum; chemical compounds; chemometrics; high performance liquid chromatography; quality control; reference standards; steroid saponins; tandem mass spectrometry; ultra-performance liquid chromatography; vegetables
Abstract:
... Allium chinense G. Don, a popular edible condiment with reputation of Ganoderma lucidum in vegetables, exerts significant health effects for treating coronary disease but chemical compounds and corresponding contents still remain unclear. In this study, a total of 80 chemical compounds were detected in Allium chinense extracts based on a summarized fragmentation pattern, of which 32 were unambiguo ...
DOI:
10.1002/jssc.201800476

9. Diamond nanoparticles coating for in‐tube solid‐phase microextraction to detect polycyclic aromatic hydrocarbons

Author:
Ji, Xiangping; Feng, Juanjuan; Wang, Xiuqin; Tian, Yu; Li, Chunying; Luo, Chuannan; Sun, Min
Source:
Journal of separation science 2018 v.41 no.24 pp. 4480-4487
ISSN:
1615-9306
Subject:
coatings; desorption; detection limit; durability; estrogens; high performance liquid chromatography; hydrophobicity; methanol; models; nanoparticles; plasticizers; polycyclic aromatic hydrocarbons; solid phase microextraction; stainless steel; standard deviation
Abstract:
... Diamond nanoparticles were coated onto stainless steel wires as a extraction material, then it was filled into a poly(ether ether ketone) tube for in‐tube solid‐phase microextraction. Coupled with high‐performance liquid chromatography, the extraction tube was evaluated with different types of analytes including polycyclic aromatic hydrocarbons, estrogens and plasticizers. As the coating, diamond ...
DOI:
10.1002/jssc.201800862

10. Enhanced enantioselectivity of native α‐cyclodextrins by the synergy of chiral ionic liquids in capillary electrophoresis

Author:
Zhang, Qi; Zhang, Jian; Xue, Song; Rui, Mengjie; Gao, Bin; Li, Ang; Bai, Jiashuai; yin, Zhichao; Anochie, Ebubedike Mitchelle
Source:
Journal of separation science 2018 v.41 no.24 pp. 4525-4532
ISSN:
1615-9306
Subject:
alpha-cyclodextrin; amino acids; beta-cyclodextrin; buffer index; buffers; capillary electrophoresis; electric potential; enantiomers; enantioselectivity; ionic liquids; models; pH
Abstract:
... In the cyclodextrins family, the native α‐cyclodextrin has almost been abandoned in capillary electrophoresis chiral separation due to its much weaker enantioselectivity compared with β‐cyclodextrin and their derivatives. In this work, several amino acid chiral ionic liquids were selected to establish synergistic enantioseparation systems with native α‐cyclodextrin. Enhanced enantioselectivities w ...
DOI:
10.1002/jssc.201800792

11. Extraction and determination of tricyclic antidepressants in real samples using air‐dispersed liquid–liquid microextraction prior to gas chromatography and flame ionization detection

Author:
Mofazzeli, Farideh; Asaadi Shirvan, Homeira; Mohammadi, Fatemeh
Source:
Journal of separation science 2018 v.41 no.23 pp. 4340-4347
ISSN:
1615-9306
Subject:
antidepressants; calibration; detection limit; flame ionization; humans; ionic strength; liquid-phase microextraction; models; pH; solvents
Abstract:
... In the present research, a novel microextraction method was used based on dispersive liquid–liquid microextraction using low‐density solvent for the determination of trace amounts of amitriptyline and doxepin as model compounds in human plasma and spring water samples before gas chromatography and flame ionization detection. The parameters influencing the extraction efficiencies including type of ...
DOI:
10.1002/jssc.201800359

12. Free fatty acid profiling in marine algae extract by LC‐MS/MS and isolation as well as quantification of the ω‐3 fatty acid hexadeca‐4,7,10,13‐tetraenoic acid

Author:
Schlotterbeck, Jörg; Kolb, Agnes; Lämmerhofer, Michael
Source:
Journal of separation science 2018 v.41 no.23 pp. 4286-4295
ISSN:
1615-9306
Subject:
Undaria pinnatifida; algae; cisplatin; drug therapy; electrospray ionization mass spectrometry; fatty acid composition; free fatty acids; liquid-liquid extraction; omega-3 fatty acids; quantitative analysis; silica; solid phase extraction; tandem mass spectrometry; ultra-performance liquid chromatography
Abstract:
... Undaria pinnatifida (Wakame) alga contains high amounts of hexadeca‐4Z,7Z,10Z,13Z‐tetraenoic acid which was reported to decrease the efficiency of cisplatin chemotherapeutics. To obtain a fatty acid enriched extract of this ω‐3 poly‐unsaturated fatty acid as an analytical standard, Wakame was used as source material for its extraction. A two‐step extraction protocol consisting of a liquid‐liquid e ...
DOI:
10.1002/jssc.201800780

13. Isolation of high‐purity peptide Val‐Val‐Tyr‐Pro from Globin Peptide using MCI gel column combined with high‐speed counter‐current chromatography

Author:
Pei, Dong; Xi, Xing‐Jun; Huang, Xin‐Yi; Quan, Kai‐Jun; Wei, Jan‐Teng; Wang, Ning‐Li; Di, Duo‐Long
Source:
Journal of separation science 2018 v.41 no.24 pp. 4559-4566
ISSN:
1615-9306
Subject:
ammonium sulfate; countercurrent chromatography; ethanol; gels; ionization; polypeptides; tandem mass spectrometry; therapeutics
Abstract:
... Peptides have gained increased interest over the past several decades because of their therapeutics. In this research, a strategy combining MCI gel column chromatography and high‐speed countercurrent chromatography was developed for the separation of high‐purity peptide Val‐Val‐Tyr‐Pro from Globin Peptide. First, the fraction of Val‐Val‐Tyr‐Pro mixtures with a purity of 15.8% was obtained by using ...
DOI:
10.1002/jssc.201800972

14. Microwave‐assisted‐demulsification dispersive liquid–liquid microextraction for the determination of triazole fungicides in water by gas chromatography with mass spectrometry

Author:
Wang, Peng; Zhao, Yiping; Wang, Xiajun; Yu, Guo‐Wei; Wang, Jian; Li, Zu‐Guang; Lee, Maw‐Rong
Source:
Journal of separation science 2018 v.41 no.24 pp. 4498-4505
ISSN:
1615-9306
Subject:
detection limit; difenoconazole; gas chromatography; liquid-phase microextraction; mass spectrometry; microwave radiation; myclobutanil; separation; solvents; standard deviation; tebuconazole; toluene; triazole fungicides; ultrasonics
Abstract:
... A novel microwave‐assisted‐demulsification dispersive liquid–liquid microextraction technique was established for determination of three triazole fungicides in environmental water samples by gas chromatography with mass spectrometry. Importantly, microwave irradiation has been applied in demulsification to achieve the phase separation and enrichment of triazole fungicides in water samples successf ...
DOI:
10.1002/jssc.201800860

15. Molecularly imprinted polymer solid‐phase extraction of synthetic cathinones from urine and whole blood samples

Author:
Murakami, Takaya; Iwamuro, Yoshiaki; Ishimaru, Reiko; Chinaka, Satoshi; Hasegawa, Hiroshi
Source:
Journal of separation science 2018 v.41 no.24 pp. 4506-4514
ISSN:
1615-9306
Subject:
aromatic compounds; blood sampling; chemical structure; forensic sciences; hydrophilicity; liquid-liquid extraction; polymers; psychotropic agents; quantitative analysis; risk; solid phase extraction; urine
Abstract:
... In forensic drug analysis, extractive pretreatment is required prior to instrumental analysis to ensure successful detection of the target compounds. However, conventional extraction methods such as hydrophilic polymer‐based solid‐phase extraction and liquid–liquid extraction are unsuitable for an emerging class of new psychoactive substances, namely, synthetic cathinones, because they exhibit a l ...
DOI:
10.1002/jssc.201800874

16. Monoacylglycerol and diacylglycerol production by hydrolysis of refined vegetable oil by‐products using an immobilized lipase from Serratia sp. W3

Author:
Zied, Zarai; Edahech, Ahlem; Rigano, Francesca; Micalizzi, Giuseppe; Mondello, Luigi; Kharrat, Nadia; Sellami, Mohamed; Cacciola, Francesco
Source:
Journal of separation science 2018 v.41 no.23 pp. 4323-4330
ISSN:
1615-9306
Subject:
Serratia; adsorption; biodegradability; byproducts; calcium carbonate; carboxylic ester hydrolases; computer software; databases; detectors; diacylglycerols; emulsifiers; environmental factors; gas chromatography; hydrolysis; instrumentation; monoacylglycerols; pH; spectrometers; surfactants; temperature; thin layer chromatography; vegetable oil
Abstract:
... Unlike the synthetic surfactants, mono‐ and diacylglycerols have the advantage to be biodegradable and non‐toxic. In the present work, the hydrolysis of lipid fraction by‐products of refined vegetable oils was performed by Serratia sp. W₃ lipase immobilized on CaCO₃ by combined adsorption and precipitation. This support was selected out of four carriers as it exhibited the finest activity support ...
DOI:
10.1002/jssc.201800432

17. Monolithic thin‐layer chromatography plates with covalently bonded matrix for hyphenation with matrix‐assisted laser desorption/ionization

Author:
Kucherenko, Elizaveta; Kanateva, Anastasiia; Kurganov, Alexander; Borisov, Roman; Pirogov, Andrey
Source:
Journal of separation science 2018 v.41 no.23 pp. 4387-4393
ISSN:
1615-9306
Subject:
chemical bonding; copolymerization; desorption; ethylene; glass; ionization; mass spectrometry; molecular weight; polyethylene glycol; silicon; thin layer chromatography
Abstract:
... Monolithic layers prepared by the copolymerization of ethylene dimethacrylate and glycidyl methacrylate and deposited onto the surface of glass and silicon plates were investigated as thin‐layer chromatography separation media in hyphenated thin‐layer chromatography with matrix‐assisted laser desorption/ionization mass spectrometry (MALDI‐MS) analysis. Varying composition of the polymerization mix ...
DOI:
10.1002/jssc.201800679

18. Optimization of a dispersive liquid–liquid microextraction method followed by UHPLC analysis for fluoxetine quantification in environmental water resources

Author:
Runfola, Massimiliano; Lima, Diana L.D.; Fonseca, Ana Paula; Barbosa, Zélia
Source:
Journal of separation science 2018 v.41 no.23 pp. 4246-4252
ISSN:
1615-9306
Subject:
aquatic environment; calibration; detection limit; drugs; fauna; fluorescence; liquid-phase microextraction; monitoring; pH; ultra-performance liquid chromatography; water resources
Abstract:
... Fluoxetine is the most prescribed drug for treatment of depression. Recently, its presence in aquatic environment has been receiving a growing interest as several studies assessed its effects on aquatic fauna. Therefore, it's important to have an analytical method capable of monitoring these compounds at low concentrations. In this study, a new method was developed based on dispersive liquid–liqui ...
DOI:
10.1002/jssc.201800727

19. Optimization of solid‐phase extraction of parabens and benzophenones in water samples using a combination of Plakett‐Burman and Box‐Behnken designs

Author:
Chávez‐Moreno, Carmin A.; Hinojosa‐Reyes, Laura; Ruiz‐Ruiz, Edgar J.; Hernández‐Ramírez, Aracely; Guzmán‐Mar, Jorge L.
Source:
Journal of separation science 2018 v.41 no.24 pp. 4488-4497
ISSN:
1615-9306
Subject:
acetonitrile; automation; benzophenones; detection limit; effluents; equipment; experimental design; high performance liquid chromatography; methylparaben; solid phase extraction; sorbents; swimming pools; wastewater
Abstract:
... An automated method for the analysis of methylparaben, propylparaben, benzophenone‐3, and benzophenone‐4 in water effluents via on‐line solid‐phase extraction coupled with high‐performance liquid chromatography/ultraviolet detection was proposed. The preconcentration parameters were studied using Plackett‐Burman and Box‐Behnken experimental designs using a C18 sorbent material. The results demonst ...
DOI:
10.1002/jssc.201800796

20. Pharmacokinetic and metabolic studies of Vortioxetine in rats using ultra high performance liquid chromatography with tandem mass spectrometry

Author:
Guan, Su; Zou, Yake; Jia, Bingjie; Wu, Lvying; Yang, Zhicheng; Yuan, Fang; Zhang, Lei
Source:
Journal of separation science 2018 v.41 no.24 pp. 4469-4479
ISSN:
1615-9306
Subject:
antidepressants; biochemical pathways; feces; hydroxylation; metabolic studies; metabolites; methylation; oral administration; oxidation; pharmacokinetics; rats; tandem mass spectrometry; ultra-performance liquid chromatography; urine
Abstract:
... Vortioxetine is a multimodal antidepressant that has been recently utilized globally. Vortioxetine hemi‐hydrochloride is a novel salt that was previously reported in our research. However, the pharmacokinetics of this salt and the metabolites of Vortioxetine in vivo remain unknown. In this study, the pharmacokinetics of the Vortioxetine hemi‐hydrochloride salt is explored in rats through a newly d ...
DOI:
10.1002/jssc.201800607