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Journal of chromatography. B, Biomedical sciences and applications最新文献

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Proceedings of the 8th annual Frederick Conference on Capillary Electrophoresis. Hood College, Maryland, USA. October 20-22, 1997. 第八届腓特烈毛细管电泳年会论文集。胡德学院，马里兰州，美国1997年10月20日至22日。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1998-08-28
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引用次数: 0
High-performance liquid chromatographic determination of the magnetic resonance imaging contrast agent gadobenate ion in plasma, urine, faeces, bile and tissues. 高效液相色谱法测定血浆、尿液、粪便、胆汁和组织中磁共振成像造影剂钆苯酸盐离子。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1998-08-25
T Arbughi, F Bertani, R Celeste, A Grotti, S Sillari, P Tirone
{"title":"High-performance liquid chromatographic determination of the magnetic resonance imaging contrast agent gadobenate ion in plasma, urine, faeces, bile and tissues.","authors":"T Arbughi,&nbsp;F Bertani,&nbsp;R Celeste,&nbsp;A Grotti,&nbsp;S Sillari,&nbsp;P Tirone","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The gadobenate ion is an intravascular paramagnetic contrast agent for magnetic resonance imaging. An HPLC method for assaying gadobenate ion in plasma, urine, faeces, bile and tissue samples is described. The analysis is based on the reversed-phase chromatographic separation of gadobenate ion from the endogenous components of biological matrices and detection by UV absorption at 210 nm. The selectivity of the method was satisfactory. The mean absolute recovery was greater than 95%. The precision and accuracy of the analytical methods were in the range 0.1-6.5% and -12 to +9.3%, respectively. The detection limits in plasma (0.1 ml), urine (0.05 ml), dried faeces (200 mg suspended in 4 ml water), bile (0.5 ml), and dried liver tissue (100 mg suspended in 1 ml water) were, respectively, 0.24, 0.47, 2.6, 0.63 and 2.8 nmol ml(-1) (corresponding to 0.16, 0.31, 1.7, 0.42 and 1.9 microg ml(-1)).</p>","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"713 2","pages":"415-26"},"PeriodicalIF":0.0,"publicationDate":"1998-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20659976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Proceedings of the 10th International Conference on Partitioning in Aqueous Two-Phase Systems. Reading, United Kingdom, 10-15 August 1997. 第十届双水相体系分划国际会议论文集。雷丁，英国，1997年8月10日至15日。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1998-06-26
{"title":"Proceedings of the 10th International Conference on Partitioning in Aqueous Two-Phase Systems. Reading, United Kingdom, 10-15 August 1997.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"711 1-2","pages":"1-329"},"PeriodicalIF":0.0,"publicationDate":"1998-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20671946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Requirements for initial assay validation and publication in J. Chromatography B. 初步测定验证和发表的要求。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1998-04-10
W Lindner, I W Wainer
{"title":"Requirements for initial assay validation and publication in J. Chromatography B.","authors":"W Lindner,&nbsp;I W Wainer","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"707 1-2","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"1998-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20533264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of dimethylated arginines in human plasma by high-performance liquid chromatography. 高效液相色谱法测定人血浆中二甲基化精氨酸。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1998-01-23
D Tsikas, W Junker, J C Frölich
{"title":"Determination of dimethylated arginines in human plasma by high-performance liquid chromatography.","authors":"D Tsikas,&nbsp;W Junker,&nbsp;J C Frölich","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"705 1","pages":"174-6"},"PeriodicalIF":0.0,"publicationDate":"1998-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20423987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of clozapine and norclozapine by high-performance liquid chromatography. 高效液相色谱法分析氯氮平和去氯氮平。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1997-08-29
K K Akerman
{"title":"Analysis of clozapine and norclozapine by high-performance liquid chromatography.","authors":"K K Akerman","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A simple and reliable method for analyzing the concentrations of clozapine and its biologically active metabolite, norclozapine, in human serum or plasma has been developed. This method is based on reversed-phase high-performance liquid chromatography (HPLC) with automated solid-phase extraction (SPE). For HPLC analysis, samples and standards are prepared with an ASPEC automatic sample preparator using 100 mg Bond-Elut C18 SPE columns. The HPLC assay is an isocratic method with a mobile phase of acetonitrile-methanol-10 mM dipotassium hydrogenphosphate, pH 3.7 (30:2:100, v/v/v) at a flow-rate of 1.5 ml/min with a C8 reversed-phase column. Detection is performed with a diode array detector set at 220 nm and with peak purity analyses at 210-365 nm. The absolute recovery varied from 85 and 95%. The intra-assay coefficients of variation (C.V.s) were from 4.2 to 8.0% and the inter-assay C.V.s were from 1.1 to 9.3% at therapeutic drug concentrations. The detection limit is 15 nmol/l. The method has been developed for use in a clinical laboratory for therapeutic drug monitoring.</p>","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"696 2","pages":"253-9"},"PeriodicalIF":0.0,"publicationDate":"1997-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20259435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Proceedings of the 7th Annual Frederick Conference on Capillary Electrophoresis. Frederick, Maryland, USA, October 21-23, 1996. 第七届腓特烈毛细管电泳年会论文集。1996年10月21日至23日，美国马里兰州弗雷德里克。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1997-07-18
{"title":"Proceedings of the 7th Annual Frederick Conference on Capillary Electrophoresis. Frederick, Maryland, USA, October 21-23, 1996.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"695 1","pages":"1-198"},"PeriodicalIF":0.0,"publicationDate":"1997-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20243287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improvement of chemical analysis of antibiotics. XXIII. Identification of residual tetracyclines in bovine tissues by electrospray high-performance liquid chromatography-tandem mass spectrometry. 抗生素化学分析方法的改进。二十三。电喷雾高效液相色谱-串联质谱法测定牛组织中残留四环素类药物。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1997-06-06
H Oka, Y Ikai, Y Ito, J Hayakawa, K Harada, M Suzuki, H Odani, K Maeda
{"title":"Improvement of chemical analysis of antibiotics. XXIII. Identification of residual tetracyclines in bovine tissues by electrospray high-performance liquid chromatography-tandem mass spectrometry.","authors":"H Oka,&nbsp;Y Ikai,&nbsp;Y Ito,&nbsp;J Hayakawa,&nbsp;K Harada,&nbsp;M Suzuki,&nbsp;H Odani,&nbsp;K Maeda","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>To reliably identify the residual tetracycline antibiotics (TCs), oxytetracycline (OTC), tetracycline, chlortetracycline (CTC) and doxycycline (DC), in bovine tissues, we have established a confirmation method using electrospray ionization liquid chromatography-tandem mass spectrometry (ESI LC-MS-MS) with daughter ion scan. All TCs gave [M+H-NH3]+ and [M+H-NH3-H2O]+ as the product ions, except for DC when [M+H]+ was selected as the precursor ion. The combination of C18 cartridge clean-up and the present ESI LC-MS-MS method can reliably identify TCs fortified at a concentration of 0.1 ppm in bovine tissues, including liver, kidney and muscle, and has been successfully applied to the identification of residual OTC in bovine liver and residual CTC in bovine muscle samples previously found at concentrations of 0.58 ppm and 0.38 ppm by LC, respectively.</p>","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"693 2","pages":"337-44"},"PeriodicalIF":0.0,"publicationDate":"1997-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20155465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gas chromatography in anaesthesia. I. A brief review of analytical methods and gas chromatographic detector and column systems. 麻醉中的气相色谱法。简要回顾分析方法和气相色谱检测器和色谱柱系统。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1997-05-23
A Uyanik
{"title":"Gas chromatography in anaesthesia. I. A brief review of analytical methods and gas chromatographic detector and column systems.","authors":"A Uyanik","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Practical applications and relevant studies involving the anaesthetic gases, have been extensively described in the literature. Many eminent analytical methods have already been developed for medical practice where routine analysis of anaesthetics is frequently needed, particularly during anaesthesia, and in related and respiratory research programmes. The determination of halothane, isoflurane, enflurane and nitrous oxide concentrations from vaporizers, in exhaled and inhaled gas mixtures, in body fluids and tissues is necessary to control anaesthetic concentrations, and thus, the relevant and adverse effects successfully. Therefore, a literature review, with particular emphasis on gas chromatography would provide important information for investigators in the search for a suitable analytical method for the analysis of multi-component mixtures of anaesthetic gases.</p>","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"693 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"1997-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20145414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergism of capillary isotachophoresis and capillary zone electrophoresis. 毛细管等速电泳与毛细管区带电泳的协同作用。
Journal of chromatography. B, Biomedical sciences and applications Pub Date : 1997-02-07
L Krivánková, P Bocek
{"title":"Synergism of capillary isotachophoresis and capillary zone electrophoresis.","authors":"L Krivánková,&nbsp;P Bocek","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The combination of capillary isotachophoresis and capillary zone electrophoresis may enhance greatly the performance of analytical capillary electrophoresis with respect to both separation power and the concentration sensitivity. The concentrating effects and the separation power of isotachophoresis allow the analysis of diluted samples and the elimination of interferences due to bulk components. The separation process of zone electrophoresis enables one to resolve the stack of trace analytes and detect the resulting individual zones with high sensitivity. The transition of isotachophoresis into zone electrophoresis plays the key role in the overall performance of this hyphenated technique. This article describes the dynamics of the conversion of isotachophoresis into zone electrophoretic mode and shows that the key role is played by the segments of the leading and terminating zones from the isotachophoretic stage. The magnitude of these segments directly effects the detection time as well as the separation width of the peaks of analytes. It is shown that these effects are also important in the analyses by capillary zone electrophoresis where isotachophoresis is induced by the sample itself. Finally, the paper presents a list of recommended, user-friendly, electrolyte systems which enable one to simply predict the performance of the combination isotachophoresis-zone electrophoresis.</p>","PeriodicalId":15425,"journal":{"name":"Journal of chromatography. B, Biomedical sciences and applications","volume":"689 1","pages":"13-34"},"PeriodicalIF":0.0,"publicationDate":"1997-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20017643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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