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N-(ジチオカルボキシ)サルコシンを用いる銅の吸光光度定量
http://hdl.handle.net/10458/4866
http://hdl.handle.net/10458/4866aa76f41a-b0da-4094-8e0e-316e51ea9752
名前 / ファイル | ライセンス | アクション |
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ski_n7.pdf (189.8 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-05-15 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | N-(ジチオカルボキシ)サルコシンを用いる銅の吸光光度定量 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Spectrophotometric determinatlon of copper with N-(dithiocarboxy) sarcosine | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
キーワード | Cement, Copper, N-(Dithiocarboxy) sarcosine, Spectrophotometry | |||||
資源タイプ | ||||||
資源タイプ | journal article | |||||
著者 |
境, 幸夫
× 境, 幸夫× 黒木, 佳津子× Kurogi, Kazuko |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In the pH range from 3.5 to 11, copper reacts with N-(dithiocarboxy) sarcosine (DTCS) to form a yellow-colored chelate having an absorption maximum at 432 nm. The molar absorptivity at the wavelength is 1.45×10^4 l mol^<-1> cm^<-1> and Beer's law is obeyed in the concentration range (25~250)μg Cu(II) /50ml. Interference by foreign ions can be eliminated by the addition of sodium tripolyphosphate(TPP), nitrilotriacetic acid(NTA) and EDTA as masking agents. In the presence of EDTA, the absorbance of the copper chelate is constant for 90min in the pH range 6.0 and 7.5. The analytical procedure is as follows; An aliquot of the sample solution containing up to 250μg of copper is transferred to a 50-ml volumetric flask and 2.0 ml of 0.05 M NTA, 5.0 ml of 0.2 M TPP and 1.0 ml of 0.01 M EDTA are added. successively. After adjusting pH to 7.0 with phosphate buffer, 2.0 ml of 0.01 M DTCS are added and the solution is diluted to the mark with water. The absorbance at 432 nm is measured within 90min against water. In the determination of 118μg of copper, the following amounts (mg/50 ml) of foreign ions are tolerable: Mg, Ca, Al, Mn, Fe(III), Zn, Pb and Bi 20, Cr(III) 3, Ni 2.2, Co 0.5, Ag 0.4, Sn(IV) 0.2, Hg(II) 1.0 and Cd 5.0. By increasing the amount of DTCS, larger amounts of Ag, Sn(IV), Hg(II) and Cd can be tolerated. The proposed method is simple and selective, and can successfully be applied to the determination of copper in cement. | |||||
言語 | en | |||||
書誌情報 |
ja : 分析化学 en : Bunseki Kagaku 巻 28, 号 7, p. 429-431, 発行日 1979-07 |
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出版者 | ||||||
言語 | ja | |||||
出版者 | 日本分析化学会 | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | The Japan Society for Analytical Chemistry | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 05251931 | |||||
著者版フラグ | ||||||
出版タイプ | VoR |