Ultrasonic assisted deep eutectic solvent liquid–liquid microextraction using azadipyrromethene dye as complexing agent for assessment of chromium species in environmental samples by electrothermal atomic absorption spectrometry    
Yazarlar (4)
Abdul Haleem Panhwar
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Prof. Dr. Mustafa TÜZEN Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Prof. Dr. Nihal DELİGÖNÜL Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Tasneem Gul Kazi
University Of Sindh, Pakistan
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Applied Organometallic Chemistry
Dergi ISSN 0268-2605 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 02-2018
Cilt No 32
Sayı 5
DOI Numarası 10.1002/aoc.4319
Özet
A novel type of solvent named deep eutectic solvent (DES) has been considered as a green ionic liquid analogue. A novel method was developed for enrichment and speciation of chromium ion from water and food samples based on deep eutectic solvent and ultrasonic extraction. The procedure for this method was comprised of Cr(III) complex formation with a hydrophobic complexing agent (Z)-N-(3,5-diphenyl-1H-pyrrol-2-yl)-3,5-diphenyl-2H-pyrrol-2-imine (azadipyrromethene dye). Metal complex was entrapped in a deep eutectic solvent as an extracting solvent. While Cr(III) recovery was quantitative, the recovery of Cr(VI) was found 5%. After reduction of Cr(VI) to Cr(III), the method was applied for determination of total chromium(III) ion. The amount of Cr(VI) was calculated as subtracting of Cr(III) from total chromium ion. Various analytical parameters were optimized. The certified reference materials were analyzed and standard addition method also carried out to real samples to check the accuracy of the developed method. Preconcentration factor was found to be 50. The limit of detection of chromium(III) was found to be 4.3 ng l-1. The precision of developed method as the relative standard deviation (RSD) was found as 3.5 %. The developed method was applied successfully for the speciation of chromium ions in water and food samples.
Anahtar Kelimeler
chromium speciation | deep eutectic solvent | dispersive liquid microextraction | electrothermal atomic absorption spectrometry | ultrasonication