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

M. Blanco; S. Maspoch

doi:10.1080/00032718408077180

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

M. Blanco, S. Maspoch

Department of Chemistry

Research output: Contribution to journal › Article › Research › peer-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 language	English
Pages (from-to)	1009-1023
Journal	Analytical Letters
Volume	17
Issue number	10
DOIs	https://doi.org/10.1080/00032718408077180
Publication status	Published - 1 Jan 1984

Keywords

8-quinolylazo
copper
metallochromic indicator
nickel and mercury titration

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10.1080/00032718408077180

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Blanco, M., & Maspoch, S. (1984). 4-(8-Quinolylazo)-1 Aminonaphtalene as a metallochromic indicator for Cu(II), Ni(II) And Hg(II). Analytical Letters, 17(10), 1009-1023. https://doi.org/10.1080/00032718408077180

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AB - 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.

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KW - nickel and mercury titration

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