4-(8-Quinolylazo)-1 Aminonaphtalene as a metallochromic indicator for Cu(II), Ni(II) And Hg(II)

M. Blanco, S. Maspoch

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The dissociation constant of 4-(8-quinolylazo)-1 aminonaphtalene (QAN) and conditional formation constants of its complexes with Cu(II), Ni(II) and Hg(II) were measured spectrophotometrically. The use of QAN as metallochromic indicator in copper, nickel and mercury titrations with EDTA was studied. QAN improves PAN and XO results in Cu(II) and Hg(II) titrations and is comparable to Murexide in Ni(II) titration. © 1984, Taylor & Francis Group, LLC. All rights reserved.
Original languageEnglish
Pages (from-to)1009-1023
JournalAnalytical Letters
Volume17
Issue number10
DOIs
Publication statusPublished - 1 Jan 1984

Keywords

  • 8-quinolylazo
  • copper
  • metallochromic indicator
  • nickel and mercury titration

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