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キシレノールオレンジを用いるジルコニウムの吸光々度定量
http://hdl.handle.net/10458/1340
http://hdl.handle.net/10458/1340909c9103-7c60-445f-be0e-4258bedd47c0
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004842999.pdf (360.0 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2008-03-11 | |||||
| タイトル | ||||||
| タイトル | キシレノールオレンジを用いるジルコニウムの吸光々度定量 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Spectrophotometric Determination of Zirconium with Xylenol Orange | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| その他（別言語等）のタイトル | ||||||
| その他のタイトル | キシレノール オレンジ オ モチイル ジルコニウム キュウコウ コウド テイリョウ | |||||
| 言語 | ja-Kana | |||||
| 著者 |
境, 幸夫
× 境, 幸夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A sensitive method for the spectrophotometric determination of zirconium with Xylenol Orange (XO) is described. Zirconium reacts with XO at pH 2.1 to form red-colored chelate, which shows an absorption maximum at 553 nm and has a molar extinction coefficient of 11.6 x 10 4 cm2 mole-1. Beer's law was obeyed over the concentration range 10-70 μg Zr/50 ml (10 mm quartz cell). An investigation was undertaken to eliminate the interferences from other metal ions, including Al, Ga, In, TI, Sc, V(V), Fe(III), Cu, Nb(III), Mo, Hf, Ta(V), W, Sn(II), Bi and Th. Among these metal ions, iron and thorium are masked with ascorbic acid and sulphate respectively. The interference from vanadium can be eliminated by the addition of α-picolinic acid. For bismuth and copper, L-cysteine is an effective masking reagent. Inhibiting effect due to the fluoride is found to be prevented by the addition of beryllium solution as demasking reagent. Thus a recommended procedure is as follows; An aliquot of standard zirconium solution containing less than 70 μg is transfered to a 100 ml-tall beaker and 1 ml of 1% Tiron is added to prevent the hydrolysis of zirconium. Then 1 ml of 0.05 M α-picolinic acid, 1 ml of 1% L-cysteine and about 30 mg of ascorbic acid are added successively. After the addition of 2 ml of 0.02 M sodium sulfate and 1 ml of 0.1% XO, the solution is buffered to pH 2.1 with 5 ml of 1M monochloroacetic acid buffer (with additions of suitable amounts of 0.5 M sodium acetate solution if required) and diluted to about 45 ml with water. The solution is heated till boiling on a heater to accelate the rate of formation of zirconium chelate. After cooling to room temperature, the solution is quantitatively transfered to a 50 ml-volumetric flask and diluted to the mark with water. The absorbance at 553 nm is measured using the reagent blank as the reference solution. When the fluoride is present less than 4 mg, 5 ml of 0.1 M beryllium solution is added prior to the addition of XO to prevent the inhibiting effect. Tolerate amounts of foreign ions by applying the procedure described above are given in Table II. |
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| 言語 | en | |||||
| 書誌情報 |
ja : 宮崎大学教育学部紀要. 自然科学 en : Memoirs of the Faculty of Education, Miyazaki University. Natural science 巻 38/39, p. 205-211, 発行日 1976-03 |
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| 出版者 | ||||||
| 出版者 | 宮崎大学教育学部 | |||||
| 言語 | ja | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 02858576 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN10498710 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
