Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Shigeru Ohashi"'
A Spectrophotometric Detector for High-Performance Liquid Chromatography of Inorganic Polyphosphates
Publikováno v:
Journal of Liquid Chromatography. 2:677-685
A spectrophotometric detector for high-performance liquid chromatography of inorganic polyphosphates such as orthophosphate, diphosphate and triphosphate is described. This method is based on the employment of an air-segmented technique (AutoAnalyzer
Autor:
Genichiro Kura, Shigeru Ohashi
Publikováno v:
Journal of Inorganic and Nuclear Chemistry. 38:1151-1155
Interactions of tetrameta-, hexameta- and octameta-phosphate ions with proton, alkali metal ions and hexamminecobalt(III) ion were studied by the conductivity and potentiometric method. It was shown that the logarithms of thermodynamic stability cons
Publikováno v:
Analytica Chimica Acta. 111:163-167
A manifold is described which permits the analysis of less than 1 ml of sample solution. Water- and air-compensation methods for the introduction of the carrier stream into the nebulizer are effective in obtaining sensitive and reproducible measureme
Publikováno v:
Journal of Chromatography A. 298:419-426
A combination of flow injection analysis (FIA) and high-performance liquid chromatography (HPLC) was employed for the spectrometric detection of aminopolycarboxylic acids (L) and the determination of their complexing abilities. The ligand L was injec
Publikováno v:
Journal of Chromatography A. 147:271-279
An atomic absorption flow detector has been employed to continously monitor the gel chromatography of magnesium polyphosphate complexes. The pH of the eluent between 4.6 and 10 greatly affects the sensitivity of detection for triophosphate, but not f
Autor:
Tohru Miyajima, Shigeru Ohashi
Publikováno v:
Journal of Chromatography A. 242:181-184
Publikováno v:
Journal of Chromatography A. 295:153-160
A parallel detection flow injection system was designed for the simultaneous determination of phosphate and phosphonate. A molybdenum(V)—molybdehnum(VI) reagent and a sulphite solution were used to differentiate colorimetrically between PIII and PV
Autor:
Masamitsu Kobayashi, Akiko Nakahama, Tsuneo Matsuo, Naoko Fujita, Shigeru Ohashi, Mitsutomo Tsuhako
Publikováno v:
Bulletin of the Chemical Society of Japan. 53:1968-1972
The reaction of cyclo-triphosphate(P3m) with L-valine in an aqueous solution was studied by means of anionexchange chromatography, paper chromatography, chemical analysis for phosphorus and valine, IR spectroscopy, and ninhydrin reaction. 1) P3m reac
Publikováno v:
Journal of Inorganic and Nuclear Chemistry. 41:1457-1460
The stability constants of complexes of tri-, tetra-, hexa- and octametaphosphate with tervalent cerium ion have been evaluated by ion-exchange and spectrophotometric methods and the difference in the results with the two methods has been discussed.
Publikováno v:
Chemistry Letters. 9:499-502
A spectrophotometric method based on the formation of heteropoly blue complex was applied to the flow injection analysis of inorganic ortho-and polyphosphates such as diphosphate and triphosphate. Ascorbic acid was used to reduce molybdophosphate. To