Determination of trace manganese in soil samples by using eco-friendly switchable solvent based liquid phase microextraction-3 holes cut slotted quartz tube-flame atomic absorption spectrometry


Zaman B. T. , Bakaraki Turan N., BAKIRDERE E. G. , Topal S., Sağsöz O., BAKIRDERE S.

Microchemical Journal, vol.157, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 157
  • Publication Date: 2020
  • Doi Number: 10.1016/j.microc.2020.104981
  • Title of Journal : Microchemical Journal
  • Keywords: 2-(Benzo(d)oxazol-2-yl)-4,6-dibromophenol, Interference, Manganese, Soil, SQT-FAAS, Switchable solvent-based liquid phase microextraction, CLOUD POINT EXTRACTION, WATER SAMPLES, PRECONCENTRATION, SEPARATION, NICKEL, IONS

Abstract

This study presents a novel preconcentration and separation method for manganese determination using a green switchable solvent-based liquid-phase microextraction and slotted quartz tube-flame atomic absorption spectrometry (SS-LPME-SQT-FAAS). The switchable solvent was prepared from the mixture of N,N dimethylamine and ultrapure water, using dry carbon dioxide for protonation. A coordinate complex of manganese was formed with ((E)-2,4-dibromo-6-(((3-hydroxyphenyl)imino)methyl)phenol ligand synthesized in the lab. Parameters including pH, buffer volume, ligand concentration/volume, switchable solvent volume and sodium hydroxide concentration/volume were optimized to enhance complex formation and extraction efficiency. The limit of detection (LOD), limit of quantification (LOD) and enrichment factor were determined as 0.71 mu g L-1, 2.4 mu g L-1 and 101 folds, respectively. The applicability of the developed method was tested in soil samples using the matrix matching calibration method. The percent recovery results obtained (98-105%) established the method's accuracy and applicability to real samples.