首页|Vortex-assisted restricted access-based supramolecular solvent microextraction of trace Pb(II) ions with 4-(benzimidazolisonitrosoacetyl) biphenyl as a complexing agent before microsampling flame AAS analysis

Vortex-assisted restricted access-based supramolecular solvent microextraction of trace Pb(II) ions with 4-(benzimidazolisonitrosoacetyl) biphenyl as a complexing agent before microsampling flame AAS analysis

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  • NSTL
  • Elsevier
A new oxime compound, 4-(benzimidazolisonitrosoacetyl)biphenyl (BIBP) was synthesized and used as a complexing agent in this study to preconcentrate trace amounts of Pb(II) ions with vortex-assisted restricted access based supramolecular solvent microextraction (RA/SUPRAS-LPME) method. The new complexing agent was characterized by a combination of elemental analyses, Proton Nuclear Magnetic Resonance (H-1-NMR), Carbon 13 Nuclear Magnetic Resonance (C-13 NMR) and Fourier Transform Infrared spectroscopy (FT-IR) and techniques. Extraction of the complex which was formed at pH 8.0 was done by using a supramolecular solvent phase of tetrahydrofuran (THF) and 1-decanol. A microsampling flame atomic absorption spectrophotometer was used to measure the lead ion concentrations of the extract. The method optimized and the optimum experimental conditions were found as; pH = 8, amount of the ligand 2,25 mg, supramolecular solvent volume 50 mu L, sample volume 20 mL and vortex time 3 min. The limit of detection (LOD), limit of quantification (LOQ) were calculated as 0.69 mu g L-1 and 2.29 mu g L-1, respectively. Linear range was found between 15.1 mu g L-1 and 606 mu g L-1. The developed method was applied to Pb(II) determination in real samples after evaluating the accuracy by using the TMDA-53.3 fortified environmental water sample as certified reference material.

OximeCharacterizationFT-IRSUPRASPreconcentrationWaterSOLID-PHASE EXTRACTIONLIQUID-LIQUID MICROEXTRACTIONCLOUD POINT EXTRACTIONATOMIC-ABSORPTION-SPECTROMETRYMULTIWALLED CARBON NANOTUBESWATER SAMPLES PRIORENVIRONMENTAL-SAMPLESMETAL-IONSLEADPRECONCENTRATION

Karatepe, Aslihan、Yemen, Mustafa、Kayapa, Faruk、Yilmaz, Erkan、Karipcin, Fatma、Soylak, Mustafa

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Nevsehir Haci Bektas Veli Univ

Erciyes Univ

2022

10.1016/j.talanta.2022.123651

Talanta

Talanta

EISCI
ISSN：0039-9140
年,卷(期)：2022.248
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