Electrothermal atomic absorption spectrometric determination of cobalt, copper, lead and nickel traces in aragonite following flotation and extraction separation

Zendelovska, Dragica; Pavlovska, Gorica; Čundeva, Katarina; Stafilov, Trajče

doi:10.1016/s0039-9140(00)00645-7

Cited by 96 publications

(50 citation statements)

References 18 publications

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“…The development of the preconcentration and separation techniques is necessary [4][5][6]. The most common of preconcentration methods is solid phase extraction(SPE) have several advantages over other methods [7][8][9] such as coprecipitation [10] ion exchange [11], solvent extraction [12]. The efficiency of water treatment with removal trace metal ions from drinking, ground and wastewater carried out with selective preconcentration and separation processes [13].…”

Section: Introductionmentioning

confidence: 99%

Nano-Silica Modified by Hematoporphyrin for Determination Some of Traces Metals Ions (Cu(II), Zn(II) and Mn(II)) in Environmental and Pharmaceutical Formula

Bakeir¹,

Attaf²,

El‐Shahat³

2017

J Environ Anal Toxicol

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Section: Introductionmentioning

confidence: 99%

Nano-Silica Modified by Hematoporphyrin for Determination Some of Traces Metals Ions (Cu(II), Zn(II) and Mn(II)) in Environmental and Pharmaceutical Formula

Bakeir¹,

Attaf²,

El‐Shahat³

2017

J Environ Anal Toxicol

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“…To answer this problem, separation or pre-concentration techniques are required. Numerous techniques have been examined for pre-concentration/determination of trace Pb, namely liquid phase extraction (Ikeda et al 1998;Dapaah et al 1999;Zendelovska et al 2001) and solid phase extraction (Dadfarnia et al 2007;Ghaedi et al 2007;Tharakeswar et al 2012). Although, conventional extraction methods can be obtaining reliable results, they usually have some disadvantages such as required long time, labor intensive and/or required large volumes of extracting solvent.…”

Section: Introductionmentioning

confidence: 99%

Microextraction based on solidified floating organic drop coupled with ETAAS for the determination of lead in herbs

Thongsaw¹,

Sananmuang²,

Ross³

et al. 2017

Nova Biotechnologica Et Chimica

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A rapid, inexpensive and practical solidified of floating organic droplet microextraction (SFODME) prior to electrothermal atomic absorption spectrometry (ETAAS) was proposed for lead (Pb) determination in herb samples. For SFODME procedure, 1-(2-pysidylazo)-2-naphthol was used as a complexing agent. Analytical parameters influencing the extraction efficiency, i.e. types and volume of extracting solvent, concentration of 1-(2-pyridylazo)-2-naphthol, pH, extraction temperature and time were optimized. Under the optimized conditions, LOD and LOQ were 0.064 and 0.214 µg L -1 , respectively, and an enrichment factor was achieved at 18.71 with the relative standard deviation ranging from 1.3 to 2.5% (n=6). The proposed method was effectively applied to the determination of lead in Spinach leaves (SRM-1570a) and Thai herb samples with acceptable results.

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“…However, the use of classical extraction methods for this purpose is usually time-consuming, labor-intensive and requires large amounts of high purity solvents for extraction. Nevertheless, several other techniques for the preconcentration and separation of copper have been proposed including liquid chromatography 22 supercritical fluid extraction 23 , flotation 24 , aggregate film formation 25 , liquid membrane 26 , column adsorption of pyrocatechol violet-copper complexes on activated carbon 27 , ion pairing 28 , ion pairing 29 , preconcentration with yeast 30 , and solid phase extraction using C 18 cartridges and disks 31 . Solid phase extraction (SPE) or liquidsolid extraction is poplar and growing techniques that are used to sample preparation for analysis.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Modified Magnetic Nano-Fe3O4 Chitosan/ Graphene Oxide for the Preconcentration and Determination of Copper (П) Ions in Biological and Environmental Water Samples Prior to Flame Atomic Absorption Spectrometry.

Yari

Moghimi²,

Fakhari³

2016

Orient. J. Chem

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A simple, highly sensitive, accurate and selective method for determination of trace amounts of Cu 2+ in water samples .In this paper, chitosan grafted with graphene oxide sheets showed an increased surface area was used to encapsulate nano-Fe 3 O 4 and produce a nano-Fe 3 O 4 -encapsulated-chitosan/ graphene oxide sorbent based new sorbent was prepared. Flame atomic absorption spectrometer was utilized for determination of Cu 2+ .Some of the important parameters on the preconcentration and complex formation were selected and optimized. Under the optimized conditionsthe limit of detection (LOD) and limit of quantification (LOQ)were 0.30,0.750 and theproposed methodhas a good reproducibility 0.90% (RSD %).The enrichment factor was 200 and the percentage of recovery was in the range of 95-100% .The method was successfully applied to the recovery of Cu 2+ in different type of water samples. Graphene oxide and its derivatessuch as magnetic nano-Fe 3 O 4 -encapsulatedchitosan/graphene oxide in this study is full of potential to use as an excellent adsorbent in the extraction method like solid phase extraction(SPE) and solid phase micro extraction(SPME). In the present study, we report the application of preconcentration techniques still continues increasingly for trace metal determinations by flame atomic absorption spectrometry (FAAS) for quantification of Cu 2+ in Formalin-fixed paraffin-embedded (FFPE) tissues from Liver loggerhead turtles. This method exhibits the superiority in compared to the other adsorption reagents because of the fact that there is no necessity of any complexing reagent and optimum pH of solution presents in acidic media.

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Electrothermal atomic absorption spectrometric determination of cobalt, copper, lead and nickel traces in aragonite following flotation and extraction separation

Cited by 96 publications

References 18 publications

Nano-Silica Modified by Hematoporphyrin for Determination Some of Traces Metals Ions (Cu(II), Zn(II) and Mn(II)) in Environmental and Pharmaceutical Formula

Nano-Silica Modified by Hematoporphyrin for Determination Some of Traces Metals Ions (Cu(II), Zn(II) and Mn(II)) in Environmental and Pharmaceutical Formula

Microextraction based on solidified floating organic drop coupled with ETAAS for the determination of lead in herbs

Preparation of Modified Magnetic Nano-Fe3O4 Chitosan/ Graphene Oxide for the Preconcentration and Determination of Copper (П) Ions in Biological and Environmental Water Samples Prior to Flame Atomic Absorption Spectrometry.

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