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- Author:
- Dong, Maofeng; Nie, Dongxia; Tang, Hongxia; Rao, Qinxiong; Qu, Mingqing; Wang, Weimin; Han, Lijun; Song, Weiguo; Han, Zheng
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2245-2252
- ISSN:
- 1615-9306
- Subject:
- adsorbents; amicarbazone; buckwheat; corn; liquid chromatography; metabolites; rice; soybeans; tandem mass spectrometry; wheat
- Abstract:
- ... A sensitive, simple and reliable analytical method based on a modified quick, easy, cheap, effective, rugged, safe sample preparation and liquid chromatography with tandem mass spectrometry detection was developed for the simultaneous determination of amicarbazone and its two major metabolites desamino amicarbazone and isopropyl‐2‐hydroxy‐desamino amicarbazone residues in grains (rice, wheat, corn ...
- DOI:
- 10.1002/jssc.201500265
-
http://dx.doi.org/10.1002/jssc.201500265
- Author:
- Naddaf, Ezzat; Ebrahimi, Mahmoud; Es'haghi, Zarrin; Bamoharram, Fatemeh Farrash
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2348-2356
- ISSN:
- 1615-9306
- Subject:
- analysis of variance; carbon nanotubes; desorption; detection limit; experimental design; fluorescence emission spectroscopy; microextraction; screening; silica; sol-gel processing
- Abstract:
- ... A sensitive technique to determinate naproxen in hair samples was developed using hollow‐fiber micro‐solid‐phase combined with fluorescence spectrophotometry. The incorporation of multi‐walled carbon nanotubes modified with a Keggin polyoxometalate into a silica matrix prepared by the sol–gel method was reported. In this research, the Keggin carbon nanotubes /silica composite was used in the pores ...
- DOI:
- 10.1002/jssc.201401459
-
http://dx.doi.org/10.1002/jssc.201401459
- Author:
- Zuo, Ming; Gao, Jieying; Zhang, Xiaoqing; Cui, Yue; Fan, Zimian; Ding, Min
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2332-2339
- ISSN:
- 1615-9306
- Subject:
- capillary electrophoresis; correlation; cost effectiveness; detection limit; drugs; ingredients
- Abstract:
- ... Capillary electrophoresis with electrochemiluminescence detection for the simultaneous analysis of cisatracurium besylate and its degradation products (laudanosine, quaternary monoacrylate) in pharmaceutical preparation was developed and fully validated. The significant parameters that influence capillary electrophoresis separation and electrochemiluminescence detection were optimized. The total a ...
- DOI:
- 10.1002/jssc.201500092
-
http://dx.doi.org/10.1002/jssc.201500092
- Author:
- Purcaro, Giorgia; Barp, Laura; Conte, Lanfranco
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2278-2285
- ISSN:
- 1615-9306
- Subject:
- capillary gas chromatography; cooking fats and oils; esters; fatty acids; flame ionization; injectors; olive oil; sterols; thermal degradation; waxes
- Abstract:
- ... Waxes and fatty acid alkyl esters are minor components used as official parameters to control the authenticity and quality of a high‐value olive oil product. A poor measurement can lead to a misleading classification of the oil. The official method requires their analysis together by capillary gas chromatography equipped with a flame ionization detector and an on‐column injector to avoid discrimin ...
- DOI:
- 10.1002/jssc.201401242
-
http://dx.doi.org/10.1002/jssc.201401242
- Author:
- Gao, Lihong; Shi, Yali; Li, Wenhui; Ren, Wenli; Liu, Jiemin; Cai, Yaqi
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2193-2200
- ISSN:
- 1615-9306
- Subject:
- acetonitrile; electrospray ionization mass spectrometry; esters; hydrophilicity; hydrophobicity; methylene chloride; phosphates; reversed-phase liquid chromatography; river water; solid phase extraction; solvents; surface water; tandem mass spectrometry
- Abstract:
- ... A simple and sensitive method for the determination of organophosphate esters in water samples by mixed‐mode liquid chromatography with electrospray ionization tandem mass spectrometry coupled with solid‐phase extraction is developed. Using seven alkyl phosphates, three chlorinated alkyl phosphates, and four aryl phosphates as the targets, the developed method was systematically evaluated on the b ...
- DOI:
- 10.1002/jssc.201500213
-
http://dx.doi.org/10.1002/jssc.201500213
- Author:
- Nascimento, Paulo Cicero; Gobo, Luciana Assis; Bohrer, Denise; Carvalho, Leandro Machado; Cravo, Margareth Coutinho; Leite, Leni Figueiredo Mathias
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2238-2244
- ISSN:
- 1615-9306
- Subject:
- atmospheric pressure; bitumen; carcinogenicity; detection limit; fractionation; ionization; liquid chromatography; mass spectrometry; mutagenicity; polycyclic aromatic hydrocarbons
- Abstract:
- ... An analytical method using liquid chromatography coupled to mass spectrometry with atmospheric pressure chemical ionization for the determination of polycyclic aromatic hydrocarbons in asphalt fractions has been developed. The 14 compounds determined, characterized by having two or more condensed aromatic rings, are expected to be present in asphalt and are considered carcinogenic and mutagenic. T ...
- DOI:
- 10.1002/jssc.201401231
-
http://dx.doi.org/10.1002/jssc.201401231
- Author:
- Ye, Wei; Fu, Hanxu; Xie, Lin; Zhou, Lijun; Rao, Tai; Wang, Qian; Shao, Yuhao; Xiao, Jingcheng; Kang, Dian; Wang, Guangji; Liang, Yan
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2340-2347
- ISSN:
- 1615-9306
- Subject:
- liquid chromatography; liquid-liquid extraction; pharmacokinetics; rats; tandem mass spectrometry
- Abstract:
- ... This study provided a novel and generally applicable method to determine ziyuglycoside I and ziyuglycoside II in rat plasma based on liquid chromatography with tandem mass spectrometry. A single step of liquid–liquid extraction with n‐butanol was utilized, and ginsenoside Rg3 was chosen as internal standard. Final extracts were analyzed based on liquid chromatography with tandem mass spectrometry. ...
- DOI:
- 10.1002/jssc.201500102
-
http://dx.doi.org/10.1002/jssc.201500102
- Author:
- Zhang, Yue; Qu, Huihua; Zeng, Wenhao; Zhao, Yan; Shan, Wenchao; Wang, Xueqian; Wang, Qingguo; Zhao, Yan
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2363-2370
- ISSN:
- 1615-9306
- Subject:
- Oriental traditional medicine; enzyme-linked immunosorbent assay; glycyrrhizin; hybridomas; immunoaffinity chromatography; mice; monoclonal antibodies; myeloma; serum albumin; splenocytes
- Abstract:
- ... In this work, a new monoclonal antibody specific for glycyrrhizic acid was prepared and characterized. A hybridoma secreting an anti‐glycyrrhizic acid monoclonal antibody was produced by fusing splenocytes from a mouse immunized against a glycyrrhizic acid–bovine serum albumin conjugate with the hypoxanthine–aminopterin–thymidine‐sensitive mouse myeloma cell line (Sp2/0‐Ag14). Subsequently, an ind ...
- DOI:
- 10.1002/jssc.201500242
-
http://dx.doi.org/10.1002/jssc.201500242
- Author:
- Weijun, Yao
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2272-2277
- ISSN:
- 1615-9306
- Subject:
- acetonitrile; acrylamides; baking; chemiluminescence; detection limit; foods; gas chromatography; nitrogen; risk; solvents; temperature
- Abstract:
- ... A method of gas chromatography with nitrogen chemiluminescence detection and using standard addition is described for the determination of acrylamide in heat‐processed foods. Using a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) sample preparation method removes the acrylamide precursors completely, and the risk of overestimating acrylamide concentration due to additional ana ...
- DOI:
- 10.1002/jssc.201500060
-
http://dx.doi.org/10.1002/jssc.201500060
- Author:
- Cavalheiro, Joana; Prieto, Ailette; Zuloaga, Olatz; Preudhomme, Hugues; Amouroux, David; Monperrus, Mathilde
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2298-2304
- ISSN:
- 1615-9306
- Subject:
- brackish water; dissolved organic carbon; environmental assessment; hydrophobicity; organic compounds; particulates; solvents; wastewater
- Abstract:
- ... According to the European Water Framework Directive, environmental assessment of organic compounds should be made in whole‐water samples, but due to their hydrophobicity and strong attraction to organic content these compounds can be found bound to suspended particle matter or in the dissolved fraction. In this work, the extraction of musk compounds was studied in whole‐water samples exhibiting di ...
- DOI:
- 10.1002/jssc.201500192
-
http://dx.doi.org/10.1002/jssc.201500192
- Author:
- Yılmazcan, Ö; Kanakaki, C.; Izgi, B.; Rosenberg, E.
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2286-2297
- ISSN:
- 1615-9306
- Subject:
- UV filters; coatings; correlation; detection limit; endocrine-disrupting chemicals; gas chromatography; mass spectrometry; pH; solid phase microextraction; swimming; temperature; uncertainty
- Abstract:
- ... A fast gas chromatography/mass spectrometry method was developed and validated for the analysis of the potential endocrine disrupters octinoxate and oxybenzone in swimming pool water samples based on the solvent‐free solid‐phase microextraction technique. The low‐pressure gas chromatography/mass spectrometry method used for the fast identification of UV filter substances was compared to a conventi ...
- DOI:
- 10.1002/jssc.201401250
-
http://dx.doi.org/10.1002/jssc.201401250
- Author:
- Moldoveanu, Serban C.; Zhu, Jeff; Qian, Nancy
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2208-2222
- ISSN:
- 1615-9306
- Subject:
- amino acids; antioxidants; free amino acids; hydrochloric acid; ion pair chromatography; ionization; monitoring; reversed-phase liquid chromatography; spectrometers; tandem mass spectrometry
- Abstract:
- ... A novel method based on liquid chromatography with tandem mass spectrometry for the analysis of 19 amino acids in plant materials is described. For the analysis, the plant material is extracted with 0.1 N hydrochloric acid with internal standards present in the extraction solution. The filtered extracts are injected using no clean‐up into the liquid chromatographic system coupled with a triple‐qua ...
- DOI:
- 10.1002/jssc.201500162
-
http://dx.doi.org/10.1002/jssc.201500162
- Author:
- Tan, Feng; Zhao, Cong; Li, Lianjun; Liu, Min; He, Xin; Gao, Jinsuo
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2312-2319
- ISSN:
- 1615-9306
- Subject:
- coatings; detection limit; graphene oxide; hydrogen bonding; ionic strength; liquid chromatography; river water; scanning electron microscopy; seawater; solid phase microextraction; tandem mass spectrometry; tap water; triazine herbicides
- Abstract:
- ... A novel in‐tube solid‐phase microextraction method based on a graphene oxide coated column was developed for the determination of triazines in waters. This column was prepared by the covalent modification of monolayer graphene oxide sheets onto the inner wall of a fused‐silica capillary. Scanning electron microscopy showed that the thickness of the graphene oxide coating was ∼30 nm, with a porous, ...
- DOI:
- 10.1002/jssc.201500070
-
http://dx.doi.org/10.1002/jssc.201500070
- Author:
- Yang, Peilin; Pursch, Matthias
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2253-2259
- ISSN:
- 1615-9306
- Subject:
- hydrophilic interaction chromatography; organic acids and salts; pH; reversed-phase liquid chromatography; silica; temperature
- Abstract:
- ... Organic acids with very low pKₐ require extremely low pH conditions to achieve adequate retention in reversed‐phase liquid chromatography, but an extremely low pH mobile phase can cause instrument reliability problems and limit the choice of columns. Hydrophilic interaction chromatography is a potential alternative to reversed‐phase liquid chromatography for the separation of organic acids using m ...
- DOI:
- 10.1002/jssc.201500143
-
http://dx.doi.org/10.1002/jssc.201500143
- Author:
- He, Dengjun; Zhou, Jiachun; Xia, Quanming; Jiang, Lihua; Qiu, Yongjun; Zhao, Liming
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2229-2237
- ISSN:
- 1615-9306
- Subject:
- cation exchange; chromatography; cosmetics; maltose; mass transfer; models; sorption isotherms; temperature; trehalose
- Abstract:
- ... Trehalose, a nonreducing disaccharide, has been extensively applied to food, cosmetics, and pharmaceutical goods. The resultant solution of trehalose prepared by enzymatic methods includes high amounts of maltose. However, it is quite difficult to separate maltose and trehalose on an industrial scale because of their similar properties. In this paper, a high‐performance resin was selected as a sta ...
- DOI:
- 10.1002/jssc.201500005
-
http://dx.doi.org/10.1002/jssc.201500005
- Author:
- Kurganov, Alexander; Victorova, Elena; Kanateva, Anastasiia
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2223-2228
- ISSN:
- 1615-9306
- Subject:
- acrylates; adsorbents; gel chromatography; hydrodynamics; polymerization; polystyrenes; porosity; temperature
- Abstract:
- ... Monolithic capillary columns based on pentaerythritol triacrylate and pentaerythritol tetraacrylate were synthesized using different compositions of polymerization mixtures and different polymerization conditions. The impact of porogen type and porogen/monomer ratio on the porosity of synthesized monoliths was investigated. Porogen type appears to be the main factor influencing the separating prop ...
- DOI:
- 10.1002/jssc.201500211
-
http://dx.doi.org/10.1002/jssc.201500211
- Author:
- Chen, Jiye; Yang, Feifei; Guo, Huaizhong; Wu, Fang; Wang, Xiaohuan
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2327-2331
- ISSN:
- 1615-9306
- Subject:
- absorption; arabinose; bioactive properties; capillary zone electrophoresis; galactose; galacturonic acid; glucose; glucuronic acid; hydrolysis; mannose; pH; polysaccharides; quality control; rhamnose; sodium; sulfuric acid; temperature; xylose
- Abstract:
- ... Using orthogonal design, optimized conditions for the hydrolysis of the polysaccharide from Radix Asparagi were determined, as well as its monosaccharide composition. Optimized hydrolysis conditions were a temperature of 100°C in 1.5 M sulfuric acid solution for 5 h. The resulting monosaccharides were derivatized with 1‐phenyl‐3‐methyl‐5‐pyrazolone, then separated by capillary zone electrophoresis ...
- DOI:
- 10.1002/jssc.201500120
-
http://dx.doi.org/10.1002/jssc.201500120
- Author:
- Zhou, Chun‐Hua; Li, De‐Qiang; Xiao, Yuan‐Yuan; Yang, Xiu‐Ling; Zhang, Zhi‐Qing
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2267-2271
- ISSN:
- 1615-9306
- Subject:
- Epimedium; Oriental traditional medicine; absorption; allopurinol; enzymatic reactions; enzyme inhibition; high performance liquid chromatography; inhibitory concentration 50; rapid methods; screening; uric acid; xanthine oxidase
- Abstract:
- ... A high‐performance liquid chromatography method with on‐line precolumn enzymatic reaction for the screening of xanthine oxidase inhibitors in natural extracts was developed. In this method, the enzymatic reaction occurred at the capillary inlet during a predetermined waiting period, after which the reaction product, uric acid, was separated and detected by liquid chromatography using ultraviolet a ...
- DOI:
- 10.1002/jssc.201500202
-
http://dx.doi.org/10.1002/jssc.201500202
- Author:
- Cao, Kai‐Yue; Qiao, Chun‐Feng; Zhao, Jing; Xie, Jing; Li, Shao‐Ping
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2201-2207
- ISSN:
- 1615-9306
- Subject:
- Schefflera actinophylla; acetonitrile; bioactive properties; cluster analysis; formic acid; high performance liquid chromatography; leaves; light scattering; quality control; quantitative analysis; rapid methods; triterpenoids
- Abstract:
- ... A rapid method based on pressurized liquid extraction followed by high‐performance liquid chromatography coupled with evaporative light scattering detection was firstly developed for the quantitative analysis of two bioactive triterpenoids (acankoreoside A and acankoreagenin) in the leaves of Schefflera octophylla and Schefflera actinophylla. The analysis was performed on an Agilent Zorbax SB‐Aq c ...
- DOI:
- 10.1002/jssc.201500223
-
http://dx.doi.org/10.1002/jssc.201500223
- Author:
- Sha, Cuicui; Fan, Yuejuan; Cheng, Jieke; Cheng, Han
- Source:
- Journal of separation science 2015 v.38 no.13 pp. 2357-2362
- ISSN:
- 1615-9306
- Subject:
- capillary electrophoresis; carbon fibers; dopamine; quantitative analysis; rats
- Abstract:
- ... We developed a method for the direct identification of dopamine in single cultured rat pheochromocytoma cells by capillary electrophoresis using an end‐channel carbon fiber nanoelectrode amperometric detector. The operation mode was designed to achieve single‐cell injection and lysis in microfluidic chip electrophoresis with only one high‐voltage power supply. The separation and detection conditio ...
- DOI:
- 10.1002/jssc.201500009
-
http://dx.doi.org/10.1002/jssc.201500009