Pub Date : 1999-11-01DOI: 10.1016/S1381-141X(99)00017-9
T. Pérez‐Ruiz, C. Martínez‐Lozano, A. Sanz, M. Miguel
{"title":"Flow-injection chemiluminescent determination of phenothiazines in pharmaceutical preparations","authors":"T. Pérez‐Ruiz, C. Martínez‐Lozano, A. Sanz, M. Miguel","doi":"10.1016/S1381-141X(99)00017-9","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00017-9","url":null,"abstract":"","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"8 1","pages":"149-158"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82169516","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}
Pub Date : 1999-11-01DOI: 10.1016/S1381-141X(99)00012-X
E. H. Hansen, J. Andersen
{"title":"A practical exercise for the determination of As(III) by flow injection hydride generation-atomic absorption spectrometry","authors":"E. H. Hansen, J. Andersen","doi":"10.1016/S1381-141X(99)00012-X","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00012-X","url":null,"abstract":"","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"23 1","pages":"91-100"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80634473","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}
Pub Date : 1999-11-01DOI: 10.1016/S1381-141X(99)00012-X
Elo Harald Hansen, Jens E.T Andersen
A practical exercise is presented for determination of very low amounts (ng/l) of As(III) by flow injection (FI) and hydride generation and atomic absorption spectrometry detection. The exercise is directed towards students at the advanced undergraduate level, and it is intended to be an introduction to procedures of FI, which by relatively uncomplicated equipment provide analysis with excellent performance. With the method presented, it can be shown that assays of As(III) in natural waters can be performed only if an on-line preconcentration step is incorporated into the FI manifold. The method offers a unique illustration of the versatility of the FI approach in sample manipulation to reach low detection limits as well as a demonstration of cleverly exploiting kinetic discrimination schemes for promoting the main reaction and eliminating potential side reactions and interferences.
{"title":"A practical exercise for the determination of As(III) by flow injection hydride generation-atomic absorption spectrometry","authors":"Elo Harald Hansen, Jens E.T Andersen","doi":"10.1016/S1381-141X(99)00012-X","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00012-X","url":null,"abstract":"<div><p>A practical exercise is presented for determination of very low amounts (ng/l) of As(III) by flow injection (FI) and hydride generation<span> and atomic absorption spectrometry detection. The exercise is directed towards students at the advanced undergraduate level, and it is intended to be an introduction to procedures of FI, which by relatively uncomplicated equipment provide analysis with excellent performance. With the method presented, it can be shown that assays of As(III) in natural waters can be performed only if an on-line preconcentration step is incorporated into the FI manifold. The method offers a unique illustration of the versatility of the FI approach in sample manipulation to reach low detection limits as well as a demonstration of cleverly exploiting kinetic discrimination schemes for promoting the main reaction and eliminating potential side reactions and interferences.</span></p></div>","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"34 2","pages":"Pages 91-100"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1381-141X(99)00012-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72110714","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}
Pub Date : 1999-11-01DOI: 10.1016/S1381-141X(99)00013-1
N. Thomaidis, C. Georgiou
{"title":"Edible oil analysis by flow injection","authors":"N. Thomaidis, C. Georgiou","doi":"10.1016/S1381-141X(99)00013-1","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00013-1","url":null,"abstract":"","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"2013 1","pages":"101-114"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74082062","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}
Pub Date : 1999-11-01DOI: 10.1016/S1381-141X(99)00016-7
N. Maniasso, E. Zagatto, S. Reis, J. L. Santos, J. Lima
{"title":"Exploitation of micellar medium for photochemical-spectrofluorimetric flow-injection determination of fenvalerate","authors":"N. Maniasso, E. Zagatto, S. Reis, J. L. Santos, J. Lima","doi":"10.1016/S1381-141X(99)00016-7","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00016-7","url":null,"abstract":"","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"133 1","pages":"143-148"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86334553","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}
Pub Date : 1999-11-01DOI: 10.1016/S1381-141X(99)00015-5
E. Luque-Pérez, Á. Ríos, M. Valcárcel, L. Danielsson, F. Ingman
{"title":"Spectrophotometric flow injection determination of caffeine in solid and slurry coffee and tea samples using supported liquid membranes","authors":"E. Luque-Pérez, Á. Ríos, M. Valcárcel, L. Danielsson, F. Ingman","doi":"10.1016/S1381-141X(99)00015-5","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00015-5","url":null,"abstract":"","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"1 1","pages":"131-142"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83202852","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}
Pub Date : 1999-11-01DOI: 10.1016/S1381-141X(99)00018-0
M.L Mena, M.M Gómez, M.A Palacios, C Cámara
The analytical performance of an on-line focused microwave digestion method for the determination of selenium in enriched yeast by hydride generation–atomic absorption spectrometry (HG–AAS) is evaluated. The method is based on the direct injection of slurried samples into a carrier stream of water. Microwave-assisted digestion in the presence of 1% K2S2O8 permits the quantitative extraction of selenium species from the solid samples and their transformation with HCl acid to selenite. Based on a sample injection volume of 100 μl, limits of detection (L.D.) of about 1 ng Se and relative standard deviation (R.S.D.) of 4.5% were obtained. The results of comparison with traditional digestion procedures are reported.
评价了在线聚焦微波消解法测定富集酵母中硒的氢化物发生-原子吸收光谱法（HG–AAS）的分析性能。该方法基于将浆料样品直接注入载水流中。在1%K2S2O8存在下的微波辅助消化允许从固体样品中定量提取硒物种，并用HCl酸将其转化为亚硒酸盐。基于100μl的进样体积，获得了约1 ng Se的检测限（l.D.）和4.5%的相对标准偏差（R.S.D.）。报告了与传统消化程序的比较结果。
{"title":"Fast on-line selenium determination in enriched yeast slurry by microwave digestion–hydride generation–atomic absorption spectroscopy","authors":"M.L Mena, M.M Gómez, M.A Palacios, C Cámara","doi":"10.1016/S1381-141X(99)00018-0","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00018-0","url":null,"abstract":"<div><p><span>The analytical performance of an on-line focused microwave digestion<span> method for the determination of selenium in enriched yeast by hydride generation–atomic absorption spectrometry (HG–AAS) is evaluated. The method is based on the direct injection of slurried samples into a carrier stream of water. Microwave-assisted digestion in the presence of 1% K</span></span><sub>2</sub>S<sub>2</sub>O<sub>8</sub> permits the quantitative extraction of selenium species from the solid samples and their transformation with HCl acid to selenite. Based on a sample injection volume of 100 μl, limits of detection (L.D.) of about 1 ng Se and relative standard deviation (R.S.D.) of 4.5% were obtained. The results of comparison with traditional digestion procedures are reported.</p></div>","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"34 2","pages":"Pages 159-165"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1381-141X(99)00018-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72110716","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}
Pub Date : 1999-10-01DOI: 10.1016/S1381-141X(99)00004-0
Lorelli A Hilliard , Thomas Lynch , Dave Lightowlers , Paul Greenwood
Permanganate Time (PT) is a standard quality control test for oxidisable impurities in products such as ethanol, acetic acid, acetic anhydride, acetone, methanol, pyridine, propionic acid and tricresyl phosphate. The test relies on visual assessment of the change in pink colouration over a period of time of a sample of product to which has been added a standard solution of potassium permanganate. Typically, this time period is between 30 min and 2 h. The standard test, therefore, is very time-consuming as well as being highly susceptible to operator error and bias. An automated measurement system has been developed that employs a photodiode array spectrophotometer to monitor the colour of the mixture. Pre-processing of the spectrum eliminates any interference and provides accurate estimates of the PT, even in the presence of a heavy precipitate. The method by which the software determines the test result can be tailored by the user to suit particular products. Any number of such user configurations can be saved for future use.
{"title":"A new system for automatic measurement of Permanganate Time","authors":"Lorelli A Hilliard , Thomas Lynch , Dave Lightowlers , Paul Greenwood","doi":"10.1016/S1381-141X(99)00004-0","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00004-0","url":null,"abstract":"<div><p>Permanganate Time (PT) is a standard quality control test for oxidisable impurities in products such as ethanol, acetic acid, acetic anhydride<span>, acetone, methanol, pyridine, propionic acid and tricresyl phosphate. The test relies on visual assessment of the change in pink colouration over a period of time of a sample of product to which has been added a standard solution of potassium permanganate. Typically, this time period is between 30 min and 2 h. The standard test, therefore, is very time-consuming as well as being highly susceptible to operator error and bias. An automated measurement system has been developed that employs a photodiode array spectrophotometer to monitor the colour of the mixture. Pre-processing of the spectrum eliminates any interference and provides accurate estimates of the PT, even in the presence of a heavy precipitate. The method by which the software determines the test result can be tailored by the user to suit particular products. Any number of such user configurations can be saved for future use.</span></p></div>","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"34 1","pages":"Pages 57-67"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1381-141X(99)00004-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72046497","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}
Pub Date : 1999-10-01DOI: 10.1016/S1381-141X(99)00005-2
C. Lohrke, Herman Dolezal, S. L. Reynolds
{"title":"Analytical laboratory: world class distinction with world-wide connection; from managing instrumentation to managing knowledge","authors":"C. Lohrke, Herman Dolezal, S. L. Reynolds","doi":"10.1016/S1381-141X(99)00005-2","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00005-2","url":null,"abstract":"","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"9 1","pages":"41-49"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82579662","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}
Pub Date : 1999-10-01DOI: 10.1016/S1381-141X(99)00003-9
E. Muller, M. Bassin, J. P. Troyon, P. Nowak
{"title":"Implementation of rapid result management systems in the metals industry","authors":"E. Muller, M. Bassin, J. P. Troyon, P. Nowak","doi":"10.1016/S1381-141X(99)00003-9","DOIUrl":"https://doi.org/10.1016/S1381-141X(99)00003-9","url":null,"abstract":"","PeriodicalId":100862,"journal":{"name":"Laboratory Automation & Information Management","volume":"2013 1","pages":"31-39"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87734373","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}
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