Spectrophotometric determination of trace amounts of nitrite based on the nitrosation reaction with N,N-bis(2-hydroxypropyl)aniline and its application to flow injection analysis

Flow-injection spectrophotometric determ

Flow-injection spectrophotometric determination of trace cobalt with 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N sulphopropylamino) aniline: use of the rate-enhancing effect of copper(II) on the complex formation reaction of cobalt

✍ Takeshi Yamane; Kazuo Koshio 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 609 KB

A flow-mJectlon spectrophotometrlc method IS presented for the determloatlon of traces of cobalt utdlzmg Its complex formatlon with 2-(5-bromo-2-pyndylao)-5-~N-propyl-N-sulphopropylam~no)an~l~ne (PSAA) Copper(H) enhances the rate of the slow complex formatlon reaction and this provides high sensltlv