Effervescence-assisted dispersive liquid-liquid microextraction based on deep eutectic solvent for preconcentration and FAAS determination of copper in aqueous samples


Arpa Ç., Albayati S., Yahya M.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, vol.98, no.10, pp.938-953, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 98 Issue: 10
  • Publication Date: 2018
  • Doi Number: 10.1080/03067319.2018.1517872
  • Journal Name: INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.938-953
  • Keywords: Copper, effervescence-assisted, deep eutectic solvent, liquid-liquid microextraction, flame atomic absorption spectrometry, ATOMIC-ABSORPTION-SPECTROMETRY, SOLID-PHASE EXTRACTION, CLOUD POINT EXTRACTION, FLOATING ORGANIC DROP, ENVIRONMENTAL WATER SAMPLES, IONIC LIQUID, TRACE AMOUNTS, FOOD SAMPLES, SPECTROPHOTOMETRIC DETERMINATION, ICP-OES
  • Hacettepe University Affiliated: Yes

Abstract

A new effervescence-assisted dispersive liquid-liquid microextraction, EA-DLLME, technique was developed for preconcentration and flame atomic absorption spectrometric determination of copper in aqueous samples. Effervescence assistance and DES combination for metal ion extraction was used for the first time. In the presented study, six different effervescence powders were examined to achieve maximum extraction efficiency. In addition, 1,5 diphenyl carbazide was used as complexing agent and DES prepared by mixing choline chloride and phenol was used as extraction solvent. The effect of several parameters such as pH, concentration of complexing agent, composition and volume of DES, amount of THF, composition and amount of effervescent agent were examined. Performed experiments showed that optimum pH was 6.0, the best effervesce powder composition was NaH2PO4:Na2CO3 with 2x10(-3):1x10(-3) molar ratio and the amount of effervesce powder was 0.4g. Under optimum conditions enhancement factor, limit of detection and limit of quantification were calculated as 78, 2.9 and 9.7g L-1, respectively. In addition, to prove precision of the method intra-day relative standard deviations were calculated for 10 and 50g L-1 Cu2+ concentrations and found as 2.1% and 1.3%, respectively. The proposed method showed good linearity within the range of 10.0-100g L-1. Finally, proposed method was successfully applied to determination of copper traces in aqueous samples.