R. Shiraishi, K. Tsukagoshi, K. Tsuchiya, K. Hirota, K. Yamashita, M. Murata
{"title":"Control of Phase Configuration of an Annular Flow in a Capillary Tube through a Mixing Joint","authors":"R. Shiraishi, K. Tsukagoshi, K. Tsuchiya, K. Hirota, K. Yamashita, M. Murata","doi":"10.24688/JFIA.37.1_13","DOIUrl":"https://doi.org/10.24688/JFIA.37.1_13","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"76 1","pages":"13"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83304258","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}
Kanokwan Kiwfo, Wasin Wongwilai, T. Sakai, N. Teshima, Hiroya Murakami, Pathinan Paengnakorn, Kitti Phojuang, Narong Kotchabhakdi, K. Grudpan
{"title":"Simple Natural Material Based Microfluidic Platforms with a Smartphone Detection Employing Natural Reagent for Acidity Assay","authors":"Kanokwan Kiwfo, Wasin Wongwilai, T. Sakai, N. Teshima, Hiroya Murakami, Pathinan Paengnakorn, Kitti Phojuang, Narong Kotchabhakdi, K. Grudpan","doi":"10.24688/JFIA.37.1_9","DOIUrl":"https://doi.org/10.24688/JFIA.37.1_9","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"434 ","pages":"9"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91456208","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}
Di Gao, Konomi Omi, N. Wada, M. Mori, Miyabi Hiyama, H. Itabashi
{"title":"All Injection Analysis for Speciation of Heavy Metals in Polluted Soil around Smelter","authors":"Di Gao, Konomi Omi, N. Wada, M. Mori, Miyabi Hiyama, H. Itabashi","doi":"10.24688/JFIA.37.2_61","DOIUrl":"https://doi.org/10.24688/JFIA.37.2_61","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"12 1","pages":"61"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79786797","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}
{"title":"FIA Award for Science","authors":"H. Sklenářová","doi":"10.24688/JFIA.36.2_87","DOIUrl":"https://doi.org/10.24688/JFIA.36.2_87","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"450 1","pages":"87"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78761072","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}
{"title":"FIA Honor Award for Science","authors":"P. Kanatharana","doi":"10.24688/JFIA.36.2_84","DOIUrl":"https://doi.org/10.24688/JFIA.36.2_84","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"26 1","pages":"84"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81566692","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}
Aiko Miyazaki, N. Kakiuchi, Kazumasa Okamoto, Masaki Takeuchi, Hideji Tanaka
Throughput rate of flow ratiometric titration has further been enhanced by shortening the lag time from the confluence of solutions upstream to the sensing of signal downstream and by optimizing analytical parameters. Feedback-based upward and downward scans of titrand/titrant flow ratio were repeated in order to offset the effect of the lag time and thus to locate the equivalence point. Subsequent faster fixed triangular wave-controlled scans in narrower range further increased the throughput rate. Analytical parameters such as scan rate and scan range were optimized. Maximally, 46.9 titrations/min was realized with reasonable precision (RSD = 1.79%). Applicability of the method to the quantitation of the Japanese Pharmacopoeia drugs (furosemide, isoniazid and prochlorperazine maleate) was verified, where the latter two drugs were determined by nonaqueous titrations.
{"title":"Unprecedented high throughput titration by feedback-based and subsequent fixed triangular wave-controlled flow ratiometry and its application to quantification of Japanese Pharmacopoeia drugs","authors":"Aiko Miyazaki, N. Kakiuchi, Kazumasa Okamoto, Masaki Takeuchi, Hideji Tanaka","doi":"10.24688/jfia.36.2_97","DOIUrl":"https://doi.org/10.24688/jfia.36.2_97","url":null,"abstract":"Throughput rate of flow ratiometric titration has further been enhanced by shortening the lag time from the confluence of solutions upstream to the sensing of signal downstream and by optimizing analytical parameters. Feedback-based upward and downward scans of titrand/titrant flow ratio were repeated in order to offset the effect of the lag time and thus to locate the equivalence point. Subsequent faster fixed triangular wave-controlled scans in narrower range further increased the throughput rate. Analytical parameters such as scan rate and scan range were optimized. Maximally, 46.9 titrations/min was realized with reasonable precision (RSD = 1.79%). Applicability of the method to the quantitation of the Japanese Pharmacopoeia drugs (furosemide, isoniazid and prochlorperazine maleate) was verified, where the latter two drugs were determined by nonaqueous titrations.","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"21 1","pages":"97"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77967606","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}
{"title":"FIA Award for Younger Researchers","authors":"R. Burakham","doi":"10.24688/JFIA.36.2_89","DOIUrl":"https://doi.org/10.24688/JFIA.36.2_89","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"2 1","pages":"89"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73885665","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}
{"title":"35th Anniversary of Journal of Flow Injection Analysis: Flow Analysis: A Tool to Educate, Collaborate and Create","authors":"P. Dasgupta","doi":"10.24688/jfia.36.2_75","DOIUrl":"https://doi.org/10.24688/jfia.36.2_75","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"3 1","pages":"75"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79633042","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}
{"title":"FIA Award for Younger Researchers","authors":"I. Timofeeva","doi":"10.24688/JFIA.36.2_91","DOIUrl":"https://doi.org/10.24688/JFIA.36.2_91","url":null,"abstract":"","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"18 1","pages":"91"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81100805","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}
Masaki Takeuchi, Miharu Nomura, Maria Shichijo, Hideji Tanaka
A flow injection analysis of nitrite nitrogen (N-NO2-) in the samples which contain relatively high degrees of salt is described. The N-NO2- was optically detected by use of Griess method. Five pseudo-seawater samples containing 40 μg L-1 N-NO2- with 0, 1, 2, 3, or 4% sodium chloride (NaCl) were tested using two quantitative analysis approaches. In an absolute calibration method, approximately 30% of positive errors were found in the presence of NaCl. On the other hand, the errors fell within the range of −2.6 to +7.3% by introducing a standard addition method. The latter method has successfully been applied to the determination of nitrite nitrogen in real seawater and estuary water.
{"title":"Flow Injection Analysis of Nitrite Nitrogen in Seawater Introducing Standard Addition Method","authors":"Masaki Takeuchi, Miharu Nomura, Maria Shichijo, Hideji Tanaka","doi":"10.24688/jfia.35.2_59","DOIUrl":"https://doi.org/10.24688/jfia.35.2_59","url":null,"abstract":"A flow injection analysis of nitrite nitrogen (N-NO2-) in the samples which contain relatively high degrees of salt is described. The N-NO2- was optically detected by use of Griess method. Five pseudo-seawater samples containing 40 μg L-1 N-NO2- with 0, 1, 2, 3, or 4% sodium chloride (NaCl) were tested using two quantitative analysis approaches. In an absolute calibration method, approximately 30% of positive errors were found in the presence of NaCl. On the other hand, the errors fell within the range of −2.6 to +7.3% by introducing a standard addition method. The latter method has successfully been applied to the determination of nitrite nitrogen in real seawater and estuary water.","PeriodicalId":15808,"journal":{"name":"Journal of flow injection analysis","volume":"40 1","pages":"59-61"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80055670","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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