Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Silver after Solid‐Phase Extraction with 2‐Mercaptobenzothiazole Immobilized on Microcrystalline Naphthalene

Shakerian, Farid; Shabani, Ali Mohammad Haji; Dadfarnia, Shayessteh

doi:10.1155/2013/465825

Cited by 5 publications

(1 citation statement)

References 25 publications

(18 reference statements)

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“…The trace and ultra-trace determination of silver is usually carried out after preconcentration by solid phase extraction [7,8], ligand cloud point extraction [9], ligandless cloud point extraction [10], cloud point extraction-flame atomic absorption [11], ligand modified magnetic nanocomposite [12], simple solvent bar micro-extraction [13], three-phase solvent bar micro-extraction [14], and determination by flame or furnace atomic absorption spectrometry [15,16]. The rapid methods involving bulk optode based on an ionophore [17], high sensitive and selective optical sensor [18], optical recognition [19] have used too.…”

Section: Introductionmentioning

confidence: 99%

Construction of modified carbon paste electrode by a new pantazene ligand for ultra-trace determination of ion silver in real samples

et al. 2019

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A new ligand, 1,5-bis(para methoxyphenyl)-3-ethyl-1,4-pantaazadiene has been synthesized by reaction of the 4-methoxyaniline (panisidine) with ethylamine. The mixture was stirred in an ice bath for 30 min. The structure of the synthesized compound resulted from the IR and 1 HNMR and 13 CNMR. Afterwards, a carbon paste electrode modified with this new ligand was developed for the silver determination at nano molar level concentration. The electerochemical properties of this modified electrode was investigated by employing cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods in an acetate buffer solution (pH=4.8). The effect of pH, scan rate, percentage of modifier and buffer as supporting electrolyte on the electrode process were investigated. The oxidation peak of Ag + was observed at about 0.4-0.5 V. The resulting electrode demonstrated linear response across a 10-9 to 10-8 mol/L-1 of silver concentration range with a detection limit value of 1.61×10-10 mol/L-1 , on the basis of a signal to noise ratio of 3. Relative Standard deviation (RSD%) of the electrode performance was 2.41%. This MCPE, showed high sensitivity and selectivity to Ag + ions in aqueous samples.

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Section: Introductionmentioning

confidence: 99%

Construction of modified carbon paste electrode by a new pantazene ligand for ultra-trace determination of ion silver in real samples

et al. 2019

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A magnetized graphene oxide modified with 2-mercaptobenzothiazole as a selective nanosorbent for magnetic solid phase extraction of gold(III), palladium(II) and silver(I)

et al. 2017

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Preliminary Study on The Development of Preconcentration Method of Cu(II), Co(II), Ni(II), and Cr(III) Ions in Water Samples Using Nanomagnetite Coated by Carboxymethyl kappa-Carrageenan (CMKC)

Purnama

Kusumaningrum

Wijaya

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Flame Atomic Adsorption Spectrophotometry (FAAS) is one of the instruments that is often used to determine metal ion concentration in solution. FAAS uses simple operational procedure for metal ions concentration determination and produces accurate metal ion concentrations. Unfortunately, the accuracy of metal ion determination test decreases if the concentration of metal ions is too low, whereas the threshold for metal ions in drinking water is very low. Preconcentration is a method for increasing the concentration of metal ions in sample. An effective preconcentration method needs to be studied to improve the accuracy in the determination of metal ions concentration in water at low concentration using FAAS. This research aims to determine the effectiveness of metal ions preconcentration in water samples using nanomagnetite coated by CMKC. The research was conducted in four stages, 1) synthesis of nanomagnetite coated by CMKC; 2) preconcentration of samples containing Cu(II), Co(II), Ni(II), and Cr(III); 3) measurement of metal ion concentration with FAAS; 4) effectivity of preconcentration process and preconcentration optimum conditions. The result showed that nanomagnetite coated by CMKC can be used to preconcentration of metal ions Cu(II), Co(II), Ni(II), and Cr(III) in water samples by utilizing desorption-adsorption mechanism. Desorption was done using 0.1 N HNO3 as a desorption solvent without variation in concentration and desorption time preconcentration optimum conditions for each metal ion were as follows, adsorption condition of Ni(II) was pH 7 and 60 minutes; Cr(III) was pH 7 and 40 minutes; Co(II) was pH 7 and 60 minutes; Cu(II) pH 6 and 40 minutes. The effectiveness of preconcentration at optimum conditions for each metal ions are: %Cr(III) > %Cu(II) > % Co(II) > %Ni(II), successively.

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Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Silver after Solid‐Phase Extraction with 2‐Mercaptobenzothiazole Immobilized on Microcrystalline Naphthalene

Cited by 5 publications

References 25 publications

Construction of modified carbon paste electrode by a new pantazene ligand for ultra-trace determination of ion silver in real samples

Construction of modified carbon paste electrode by a new pantazene ligand for ultra-trace determination of ion silver in real samples

A magnetized graphene oxide modified with 2-mercaptobenzothiazole as a selective nanosorbent for magnetic solid phase extraction of gold(III), palladium(II) and silver(I)

Preliminary Study on The Development of Preconcentration Method of Cu(II), Co(II), Ni(II), and Cr(III) Ions in Water Samples Using Nanomagnetite Coated by Carboxymethyl kappa-Carrageenan (CMKC)

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