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Dive into the research topics where Hisae Tamura is active.

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Featured researches published by Hisae Tamura.


Fresenius Journal of Analytical Chemistry | 1984

Determination of antimony in solder alloy by hydride generation followed by graphite furnace atomic absorption spectrometry

Takuo Inui; S. Terada; Hisae Tamura; Norio Ichinose

ZusammenfassungAntimon wurde nach diesem Verfahren in Lotlegierung NBS (SRM 1276) bestimmt. Die Stibine wurden in einer horizontalen Glasröhre erzeugt, die gekörntes Natriumborhydrid enthielt. Der Argonfluß betrug 1, 2–1,3 l/min, die Atomisierungstemperatur 2300° C und die Konzentration an Säure 1,2–1,5 M. Die starke Unterdrückung des Sb-Signals durch Ni, Co und Cu konnte erfolgreich mit Hilfe von 1,10-Phenanthrolin verhindert werden. Die Nachweisgrenze lag bei 1,2 ng, die Präzision betrug 4–5%. Die benutzte Reduktionsröhre ist sehr einfach und kann an alle Typen von Graphitöfen angeschlossen werden. Das Verfahren läßt sich auch zur Quecksilberbestimmung [1] einsetzen.SummaryAntimony was determined in solder alloy (NBS; SRM 1276) by a combination of hydride generation with reducing tube, graphite furnace atomization and atomic absorption detection. Stibines were generated in a horizontal glass tube, in which a pellet of sodium borohydride was placed. 1.2–1.3 1/min of argon flow rate, 2,300° C of atomization temperature and 1.2–2.5 M of acids concentration were the best experimental conditions. The strong supression of the antimony signal by nickel, cobalt and copper was effectively eliminated with 1,10-phenanthroline. A detection limit of 1.2 ng was obtained with a precision of 4–5%. The reducing tube used in this technique is extremely simple and can be connected to all the types of graphite furnaces. Furthermore, this technique can be used for the determination of mercury [1].


Fresenius Journal of Analytical Chemistry | 1983

Determination of germanium by hydride generation with reducing tube followed by graphite furnace atomic absorption spectrometry using CH4/Ar as sweeper gas

Takuo Inui; S. Terada; Hisae Tamura; Norio Ichinose

ZusammenfassungBei dem beschriebenen Verfahren werden die Hydride in einem horizontalen Glasrohr erzeugt, das eine NaBH4-Perle enthält. Als optimale experimentelle Bedingungen ergaben sich: Spülgas (0,61/min) aus 10% CH4 und 90% Ar, Atomisierungstemperatur 2700° C, 2,5–3 M Säure. Die starke Beeinflussung des Ge-Signals durch Ni und Co wurde mit Hilfe von 1,10-Phenanthrolin eliminiert, die Störung durch Au mit Hilfe von Thiosemicarbazid. Das verwendete Reduktionsrohr ist sehr einfach und kann für alle Arten von Graphitöfen benutzt werden. Die Nachweisgrenze beträgt 2 ng, die Reproduzierbarkeit 3–4%.SummaryA sensitive method for the hydride generation and graphite tube furnace atomic absorption spectrometric measurements with a reducing tube using mixed gas (CH4 10% + Ar 90%) as sweeper gas has been developed for the determination of germanium. Germanium hydrides were generated in a horizontal glass tube, in which a pellet of NaBH4 was placed. 0.61/min of sweeper gas flow rate, 2,700° C of atomization temperature and 2.5–3 M of acidity range were the best experimental conditions. The strong supression of the germanium signal by Ni and Co was effectively eliminated with 1,10-phenanthroline and thiosemicarbazide was comparatively effective for Au. The reducing tube used in this technique is extremely simple and can be connected to all the types of graphite furnaces. A detection limit of 2 ng was obtained with a precision of 3–4%


Fresenius Journal of Analytical Chemistry | 1981

Determination of arsenic by arsine generation with reducing tube followed by graphite furnace atomic absorption spectrometry

Takuo Inui; S. Terada; Hisae Tamura

ZusammenfassungArsin wird in einem horizontalen Glasrohr erzeugt, das eine NaBH4-Tablette enthält. Die AAS-Bestimmung erfolgt am günstigsten bei einem Argonstrom von 1,5–2,0 l/min und mit einer Atomisierungstemperatur von 2400° C. Die starke Unterdrückung des Arsensignals durch Ni und Co kann mit 1,10-Phenanthrolin wirksam eliminiert werden. Die Nachweisgrenze beträgt 0,3 ng bei einer Reproduzierbarkeit von 3–4%. Das Verfahren wurde auf die Arsenbestimmung in Tee und Obstbaumblättern angewendet.SummaryA sensitive method for hydride generation and graphite tube furnace atomic absorption spectrometric measurements with a reducing tube has been developed for the determination of arsenic in tea and orchard leaves. Arsines were generated in a horizontal glass tube, in which a pellet of NaBH4 was placed. 1.5–2.0 l/min of argon flow rate and 2,400° C of atomization temperature were the best experimental conditions. The strong supression of the arsenic signal by Ni and Co was effectively eliminated with 1,10-phenanthroline. A detection limit of 0.3 ng was obtained with a precision of 3–4%.


Fresenius Journal of Analytical Chemistry | 1978

Extraction and atomic-absorption spectrometric determination of traces of bismuth with zinc dibenzyldithiocarbamate in aluminium alloys and solder alloys

Hisae Tamura; Norio Ichinose

ZusammenfassungEin empfindliches Verfahren zur Wismutbestimmung mit Zinkdibenzyldithiocarbamat wurde ausgearbeitet. Wismut wird dabei aus relativ stark saurer Lösung als Bi-DBC-Komplex mit Methylisobutylketon extrahiert und zur Messung der Extrakt direkt in die Luft-Acetylen-Flamme gesprüht. Bis zu 1 mg Fe und 100 μg Cu stören die Bestimmung von 0–80 μg Bi nicht. Die Nachweisgrenze beträgt 0,12 ppm in Methylisobutylketon.SummaryA sensitive method for the extraction and atomic-absorption spectrometric determination of bismuth with zinc dibenzyldithiocarbamate (ZnDBC) has been developed for aluminium alloys and solder alloys. Bismuth is extracted from relatively strong acidic solution into methyl isobutyl ketone (MIBK) as BiDBC complex and its concentration is determined by spraying the MIBK extract into an air-acetylene flame. Iron and copper up to 1 mg resp. 100 μg did not interfere with the extraction of bismuth in the range of 0–80 μg. The limit of detection was about 0.12 ppm in MIBK.


Bunseki Kagaku | 1992

Determination of ruthenium in biological tissue by graphite furnace AAS after decomposition of the sample by tetramethylammonium hydroxide.

Hisae Tamura; Takami Arai; Mitsumasa Nagase; Norio Ichinose


Journal of Physiological Anthropology | 2006

Age-related Changes of Reaction Time and p300 for Low-contrast Color Stimuli : Effects of Yellowing of the Aging Human Lens

Taka Aki Suzuki; Yi Qiang; Satoshi Sakuragawa; Hisae Tamura; Katsunori Okajima


Color Research and Application | 2005

Comparing the visibility of low-contrast color Landolt-Cs: Effect of aging human lens

Taka-aki Suzuki; Qiang Yi; Satoshi Sakuragawa; Hisae Tamura; Katsunori Okajima


Japanese Journal of Nephrology | 1992

Alterations of anionic charge and/or sites of the glomerular basement membrane in the heterologous phase of passive Heymann nephritis.

Takami Arai; Mitsumasa Nagase; Shuzo Kobayashi; Hisae Tamura; Norio Ichinose


Bulletin of the Chemical Society of Japan | 1988

Seasonal movements of phosphorus and iron compounds, dissolved hydrogen sulfide, and others in anoxic seawater at lake Hamana

Norio Ichinose; Kyoko Adachi; Mina Mitsui; Chiaki Shimizu; Ken Okamoto; Hisashi Kurokura; Takuo Inui; Hisae Tamura


Journal of Physiological Anthropology | 2010

Changes of muscular load with aging in the motion of pulling up disposable diapers.

Tsuyoshi Yoto; Satoshi Sakuragawa; Taka-aki Suzuki; Hisae Tamura; Rumi Yamaki; Yoshihisa Fujioka; Tetsuo Katsuura

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Satoshi Sakuragawa

Industrial Research Institute

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Taka-aki Suzuki

Industrial Research Institute

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Qiang Yi

Industrial Research Institute

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Katsunori Okajima

Yokohama National University

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Yi Qiang

Industrial Research Institute

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Takuo Inui

Industrial Research Institute

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S. Terada

Industrial Research Institute

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