title: Solid-Phase Spectrophotometric Analysis of 1-Naphthol Using Silica Functionalized with m-Diazophenylarsonic Acid.
abstract: The m-aminophenylarsonic acid (m-APAA) was immobilized onto the silica gel surface with covalently grafted quaternary ammonium groups via ion exchange. The diazotization of ion-bonded m-APAA resulted in a new solid-phase spectrophotometric reagent for detection of 1-naphtol in environmental water samples. The procedure of solid-phase spectrophotometric analysis is characterized by 20 μg L(-1) limit of detection (LOD) of 1-naphtol, up to 2000 concentration factor, and insensitivity to the presence of natural water components as well as to 30-fold excess of phenol, resorcinol, and catechol.
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv, 01601, Ukraine.
authors.forename: Nataliya
authors.initials: N
authors.lastname: Zaitseva
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv, 01601, Ukraine.
authors.forename: Sergei
authors.initials: S
authors.lastname: Alekseev
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv, 01601, Ukraine.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Zaitsev
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv, 01601, Ukraine. khalaf@univ.kiev.ua.
authors.forename: Viktoria
authors.identifier: http://orcid.org/0000-0003-4171-3907
authors.initials: V
authors.lastname: Raks
keywords: 1-Naphtol; Azo coupling reaction; Functionalized silica; Solid-phase extraction; Solid-phase spectrophotometry