4-(2-ピリジルアゾ)レゾルシノール,ジルコニウム(IV)とフッ化物イオン間の発色反応とその利用

概要

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A color reaction among 4-(2-pyridylazo) resorcinol (PAR), Zr (IV), and F^- in the coexistence of various surfactants was studied. And then, the methods for the spectrophotometric determinations of Zr (IV), F^-, and acromycin were established by using the PAR-Zr (IV)-F^- colored complex solution in the presence of cetylpyridinium chloride (CPC) as a cationic surfactant at around pH 7. The present methods could be used to determine up to 12.0μg/10ml Zr (IV), 78.0μg/10ml acromycin and 2.0〜10.0μg/10 ml F^- by using the PAR-Zr (IV)-F^- complex solution. The calibration curve was rectilinear in the range of 0〜25.0 μg/10 ml of Hf (IV) by using the standard procedure for the determination of Zr (IV) in the same ways. The apparent molar absorptivities were 7.1 × 10^4 dm^3 mol^<-1> cm^<-1> for Zr (IV), 6.2 × 10^4 dm^3 mol^<-1> cm^<-1> for Hf (IV) and 9.5 × 10^4 dm^3 mol^<-1> cm^<-1> for F^- at 540 nm, respectively.
社団法人日本分析化学会の論文
1986-02-05