@article{oai:kumadai.repo.nii.ac.jp:00022209,
 author = {戸田, 敬 and Toda, Kei and 實政, 勲 and Sanemasa, Isao and Deguchi, Toshio and 出口, 俊雄 and 戸田, 敬 and Toda, Kei and 實政, 勲 and Sanemasa, Isao and Deguchi, Toshio and 出口, 俊雄},
 issue = {1},
 journal = {分析化学},
 month = {Jan},
 note = {application/pdf, 論文(Article), ジルコニウム-キシレノールオレンジ(XO)及びジルコニウム-メチルチモールブルー(MTB)反応系によるフッ化物イオンの接触作用をフローインジェクション法に適用し、迅速化、簡便化を行い、両者の比較検討を行った。XOあるいはMTB溶液、及びジルコニウム溶液の流れを十分混合し、これに水の流れに注入した試料を合流させ反応させた後、試料帯域がフローセルを通過する際の吸光度変化を連続的に記録した。両方法とも0.01～2ppm範囲のフッ化物イオンを含む試料について1時間当たり最大40検体の速度で分析が可能であったが反応温度の影響を受けにくいジルコニウム-MTB反応系による定量が推奨できる。この方法を用いて天然水試料を対象として本法の適用性が検討された。, Rapid and simple methods have been developed for the determination of fluoride ions by means of flow injection analysis based on the catalytic reactions, where fluoride ions act as catalyst on complex formation of polymerised zirconium with xylenol orange (XO) or methylthimol blue (MTB). Respective solutions (flow rates : 0.5 ml min-1) of l.Ox10-4 M XO (0.6 M HC1) or MTB (0.5 M HC1) and 2.0xl0-4M zirconium tetrachloride (0.06 M HC1), which had been allowed to stand overnight, were mixed in a mixing tube (1 mm i.d., 1 m). On the other hand, a sample solution (235μl) was injected into a carrier stream of water (flow rate : 2.0 ml min-1), and it was allowed to flow together with the premixed reagent stream. After passing through a reaction tube (1 mm i.d., 3 m), absorbance due to the formation of zirconium-XO or -MTB complex was measured at 550 or 586 nm by a spectrophotometer equipped with a flow cell (light path 10 mm). Under these conditions, 0.01～2 ppm of fluoride ions can be determined. The detection limit (SIN=2) was 0.01 ppm, and the sampling rate was 40 samples/h. The effect of diverse ions was studied, and the existence of aluminium(III), copper(II), iron(III),
sulfite, sulfate, silicate, and organic acids was found to interfere to a great extent in determining fluoride ions.
So, it is necessary to distil fluoride ions as hexafluorosilicic acid before determination. The method was applied to samples of natural water, and the applicability of this method was confirmed from the comparison with the results by lanthanum-alizarin complexone method and ion chromatography., http://www.jsac.or.jp/bunka/bunsekikagaku.html},
 pages = {31--35},
 title = {接触反応を用いるフッ化物イオンのフローインジェクション法},
 volume = {34},
 year = {1985},
 yomi = {トダ, ケイ and サネマサ, イサオ and デグチ, トシオ and トダ, ケイ and サネマサ, イサオ and デグチ, トシオ}
}