著者

高島 教一郎 中島 篤之助 河口 広司 大内 義彦

出版者

社団法人 日本分光学会

雑誌

分光研究 (ISSN:00387002)

巻号頁・発行日

vol.18, no.5, pp.262-267, 1969

被引用文献数

5

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A direct, quantitative analytical technique for the analysis of gadolinium, dysprosium, europium and samarium in aluminum oxide using the X-ray-excited optical fluorescence spectra is described.<BR>Rare earth elements were coprecipitated with host aluminum from acid solution as aluminum hydroxide. Precipitated hydroxide was dried after centrifugal separation and then heated in a muffle furnace at 1000&deg;C for 2 hours. These oxides were then heated at 1450&deg;C in an electric resistance furnace for 60 seconds.<BR>Such an impulsive heating followed by quenching, described above, prominently enhances the luminescent intensities of rare earth elements. It was shown by the X-ray diffraction method that the crystal of Al<SUB>2</SUB>O<SUB>3</SUB> were transformed from &gamma;r-type oxide to the stable &alpha;-type oxide during the above heat treatment.<BR>Concentrations of gadolinium, dysprosium, samarium, europium have been determined by this method with detection limits ranging from 0.05 to 1.0ppm. Reproducibility was found to be 5-10%.The enhancement and suppression effect due to iron, silicon and copper were investigated and discussed.

著者

中島 篤之助

出版者

一般社団法人 日本物理学会

雑誌

年会講演予稿集

巻号頁・発行日

vol.41, pp.107-108, 1986

著者

中島 篤之助 白石 裕子

出版者

社団法人 日本分光学会

雑誌

分光研究 (ISSN:00387002)

巻号頁・発行日

vol.1, no.4, pp.23, 1953

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A high voltage a. c. arc source unit of usual type was constructed in order to develop the spectrochemical methods of trace elements in iron and steel. This arc supply consists of a power transformer having a 220 volt primary and two 2200 volt secondaries, each capable of supplying 2.2 amperes. A switching system allows the secondaries to be hooked inseues or parallel, so that two voltage ranges are available; 2200 and 4400.<BR>Seventy heater type coils wounded by 0.5 mm &ldquo;Advance&rdquo; wire are used as a ballast resistors in the secondaries and permit one to control the current from ampere to ampere at 4400 volt range and from to ampere at 2200 volt range.<BR>The arc stand in locked into safety cage and the door of this cage act, as a switch preventing the current to flow into trasformer primary when this door is opening.

著者

中島 篤之助

出版者

工業技術院機械試験所

雑誌

機械試験所所報 (ISSN:03884244)

巻号頁・発行日

vol.7, no.5, pp.197-201, 1953-09

著者

中島 篤之助

出版者

新日本出版社

雑誌

季刊科学と思想 (ISSN:02877384)

巻号頁・発行日

no.72, pp.p1108-1130, 1989-04

著者

中島 篤之助 白石 裕子

出版者

社団法人 日本分光学会

雑誌

分光研究 (ISSN:00387002)

巻号頁・発行日

vol.2, no.6, pp.20-23, 1953

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High voltage a. c. arc source, which is secondarily shunted by large capacitor, is used as a excitation source.<BR>Powdered sample is deposited on_a massive copper bar moistened with collodion (diluted with Amyl-acetate), dried at 110&deg;C, and installed as the lower electrode with a cone-shaped upper electrode. As the discharge proceeds to burn, the lower electrode is moved towards the direction perpendicular to the optical axis of the Zeiss Qu-24 spectrograph, exposing fresh sample surfaces for discharge.<BR>Spectral lines are clearly seen under these conditions down to 0.01% for sulfur, selenium, chlorine, bromine, and iodine, but such a high sensitivity can not be obtained for fluorine.

著者

中島 篤之助

出版者

工業技術院機械試験所

雑誌

機械試験所所報 (ISSN:03884244)

巻号頁・発行日

vol.7, no.5, pp.197-201, 1953-09

著者

中井 敏夫 中島 篤之助

出版者

The Chemical Society of Japan

雑誌

工業化学雑誌 (ISSN:00232734)

巻号頁・発行日

vol.63, no.1, pp.11-17, 1960

著者

三橋 鐵太郎 中島 篤之助 白石 裕子

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.39, no.11, pp.1277-1281, 1953

被引用文献数

2

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Apparatus of the high voltage a. c. arc source (4400-2A; 2200V-4A) as the light source of spectrographic analysis was designed and manufactured, and the quantitative spectrographic analysis of manganse, titanium, silicon, nickel, chromium, and arsenic in steel was carried out by it. It was ascertained that the quantitative analysis which hsd been impossible for small amount of the above elements in steel in the usual spark discharge method, became possible in high sensitivity and about 3-8 percent reproducibility by the above apparatus.<BR>As for the other characteristic, it was proved that there was practically no continuous background and few loss of testpieces on account of a lower temperature of the electrode.

著者

中島 篤之助

出版者

毎日新聞社

雑誌

エコノミスト (ISSN:00130621)

巻号頁・発行日

vol.64, no.21, pp.p12-17, 1986-05-20

著者

中島 篤之助

出版者

一般社団法人日本物理学会

雑誌

日本物理学会誌 (ISSN:00290181)

巻号頁・発行日

vol.42, no.1, pp.53-58, 1987

著者

中島篤之助 安斎育郎著

出版者

新日本出版

巻号頁・発行日

1974

著者

中島篤之助安斎育郎著

出版者

新日本出版社

巻号頁・発行日

1983