@article{oai:kumadai.repo.nii.ac.jp:00022210,
 author = {Deguchi, Toshio and 出口, 俊雄 and Takeshita, Ryoichi and 田中, 明 and Tanaka, Akira and 實政, 勲 and Sanemasa, Isao and 實政, 勲 and 出口, 俊雄 and 竹下, 良一 and 田中, 明 and 実政, 勲},
 issue = {5},
 journal = {分析化学},
 month = {May},
 note = {application/pdf, 論文(Article), スチルバゾの過酸化水素による酸化反応の際Co(II)イオンが触媒として働くが、酸化剤として用いる過酸化水素の濃度が低い場合は、スチルバゾの Co(II)イオンによる接触反応が過酸化水素濃度に比例する。このことを利用してスチルバゾ-Co(II)イオン系による過酸化水素の微量定量にFIA を適用した。スチルバゾとCo(II)イオンの混合溶液の流れと、pH値を11.9に調整したアルカリ水溶液の流れを十分混合させ、これに水の流れに注入した試料を合流させた後、試料ゾーンがフローセルを通過する際、503nmでの吸光度変化を連続的に記録した。本法は0.1～10ppm範囲の過酸化水素を含む試料について、1時間当たり最大75検体の分析が可能であった。, Stilbazo, 4,4'-bis(3,4-dihydroxyphenylazo) stilbene-2,2'-disulfonic acid diammonium salt, is oxidized in the presence of hydrogen peroxide, where cobalt (II) acted as catalyst and accelerated the oxidation reaction. The decoloration of stilbazo measured at 503 nm was found to be proportional to the hydrogen peroxide concentration over its low concentration range. A 90 μM stilbazo solution containing 0.5 ppm Go(II) and a buffer solution (pH 11.9, NaOH+Na2CO3) were delivered each into the FIA system at a flow rate of 1.0 ml/min. The resulting mixture was then converged with the water stream flowing at a rate of 2.0 ml/min, that served as a sample carrier. The sample solution of hydrogen peroxide (390 μl) was injected into the sample carrier, and was sent to a reaction tube (3.5 m X 1 mm i.d.) thermostated at 30 ℃. The absorbance change in stilbazo was measured at 503 nm. The following experimental conditions were examined: sample
volume injected, reaction tube length, reagent solution flow rate, reaction temperature, concentration of stilbazo and Co(II), and the interference of diverse
ions. Ascorbic acid seriously interfered, while glucose, fructose, urea, NaCl, KBrO3, and some other inorganic electrolytes did not. Heavy metals (Cu, Zn, Ni) were effectively removed by an ion-exchange column (25 cm x 2 mm i.d.) installed just after the sample injection section. The determination range of hydrogen peroxide
was from 0.1 to 10 ppm. The sampling rates were ca. 30 samples/h with the ion exchange column and 75 samples/h without the column., http://www.jsac.or.jp/bunka/bunsekikagaku.html},
 pages = {248--252},
 title = {コバルト(II)によるスチルバゾの接触酸化反応を利用する過酸化水素のフローインジェクション分析法},
 volume = {37},
 year = {1988},
 yomi = {デグチ, トシオ and タナカ, アキラ and サネマサ, イサオ}
}