Butan-1-ol as an extractant solvent in dispersive liquid-liquid microextraction in the spectrophotometric determination of aluminium

Author(s)

Lima, Lucas Carvalho ^[1] ; Papai, Rodrigo ^[1] ; Gaubeur, Ivanise ^[1]

Affiliation

^[1] Univ Fed Abc, Ctr Ciencias Nat & Humanas, LEMA, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY; v. 50, p. 175-181, 2018.
• Web of Science Citations: 5

Abstract

Determining aluminium ions at mu g L-1 scale currently requires either costly analytical techniques such as inductively coupled plasma, and/or graphite furnace atomic absorption spectrometry. Dispersive liquid-liquid microextraction (DLLME) is designed to promote separation and preconcentration, thus making it possible to determine the analyte of interest without significant matrix influence. This study was aimed at the development of a spectrophotometric method to determine Al3+ after microextraction of its complex with quercetin. Butan-1-ol was used as a novel extractant solvent in the DLLME process. The parameters influencing complexation and microextraction, such as the amount of quercetin and volume of extractant were evaluated by univariate analysis. In optimised conditions were estimated for the proposed method: linear range from 7.5 to 165.0 mu g L-1, LOQ of 2.0 mu g L-1, and LOQ of 7.0 mu g L-1. The accuracy was checked by applying the proposed method to water (NIST SAM-1643e) and rice flour (NIST SRM-1568c) certified reference materials and spike-and-recovery trials with distinct samples (mineral water, green tea, thermal spring water, contact lens disinfecting solution, saline concentrate for hemodialysis and urine). (AU)

• FAPESP's process: 16/23878-0 - Consolidation and innovation in the research line: analytical methods development combined to liquid phase microextraction
• Grantee: Ivanise Gaubeur
• Support Opportunities: Regular Research Grants