title: Ultrasonic assisted dispersive solid-phase microextraction of Eriochrome Cyanine R from water sample on ultrasonically synthesized lead (II) dioxide nanoparticles loaded on activated carbon: Experimental design methodology.
abstract: The present research focus on designing an appropriate dispersive solid-phase microextraction (UA-DSPME) for preconcentration and determination of Eriochrome Cyanine R (ECR) in aqueous solutions with aid of sonication using lead (II) dioxide nanoparticles loaded on activated carbon (PbO-NPs-AC). This material was fully identified with XRD and SEM. Influence of pH, amounts of sorbent, type and volume of eluent, and sonication time on response properties were investigated and optimized by central composite design (CCD) combined with surface response methodology using STATISTICA. Among different solvents, dimethyl sulfoxide (DMSO) was selected as an efficient eluent, which its combination by present nanoparticles and application of ultrasound waves led to enhancement in mass transfer. The predicted maximum extraction (100%) under the optimum conditions of the process variables viz. pH 4.5, eluent 200μL, adsorbent dosage 2.5mg and 5min sonication was close to the experimental value (99.50%). at optimum conditions some experimental features like wide 5-2000ngmL-1ECR, low detection limit (0.43ngmL-1, S/N=3:1) and good repeatability and reproducibility (relative standard deviation, <5.5%, n=12) indicate versatility in successful applicability of present method for real sample analysis. Investigation of accuracy by spiking known concentration of ECR over 200-600ngmL-1gave mean recoveries from 94.850% to 101.42% under optimal conditions. The procedure was also applied for the pre-concentration and subsequent determination of ECR in tap and waste waters.
authors: Departmentof Chemistry, Yasouj University, Yasouj 75918-74831, Iran.
authors: Sonia
authors: S
authors: Bahrani
authors: Departmentof Chemistry, Yasouj University, Yasouj 75918-74831, Iran. Electronic address: m_ghaedi@mail.yu.ac.ir.
authors: Mehrorang
authors: M
authors: Ghaedi
authors: Department of Pharmacology Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.
authors: Mohammad Javad Khoshnood
authors: MJ
authors: Mansoorkhani
authors: Departmentof Chemistry, Yasouj University, Yasouj 75918-74831, Iran.
authors: Arash
authors: A
authors: Asfaram
authors: Departmentof Chemistry, Yasouj University, Yasouj 75918-74831, Iran.
authors: Ali Akbar
authors: AA
authors: Bazrafshan
authors: Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
authors: Mihir Kumar
authors: MK
authors: Purkait
mesh_terms: D000327:Adsorption; D001557:Benzenesulfonates / Q000737:chemistry / Q000302:isolation & purification*; D002606:Charcoal / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry; D010087:Oxides / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*; D013010:Sonication; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
chemical_list: D001557:Benzenesulfonates; D010087:Oxides; D014874:Water Pollutants, Chemical; D014867:Water; D002606:Charcoal; D007854:Lead; C010332:solochrome cyanine R; C047365:lead oxide
keywords: Central composite design; Eriochrome Cyanine R; Lead (II) dioxide nanoparticles loaded on activated carbon; Ultrasound-assisted dispersive solid phase microextraction