Anodic stripping voltammetric determination of mercury by use of a sodium montmorillonite-modified carbon-paste electrode

Huang, Wensheng; Yang, Chao; Zhang, Shenghui

doi:10.1007/s00216-002-1438-0

Cited by 27 publications

(3 citation statements)

References 14 publications

(14 reference statements)

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“…1 Clay-modified electrodes has been applied to detect some analytes such as Pb 2+ , Fe 3+ , Cu 2+ , Hg 2+ , Ca 2+ , Ru(NH 3 ) 3+ , nitrophenol, ascorbic acid, dopamine and uric acid using differential pulse voltammetry (DPV), potentiometric ion sensitive electrode (PISE) and square wave voltammetry (SWV) methods. [17][18][19][20][21][22][23][24][25][26] Herein we described a simple and accurate electrochemical method using clay-modified glassy carbon electrodes. Methyl (M)-and dimethylamine (DA)-exchanged Mont was used as an immobilization matrix.…”

Section: Introductionmentioning

confidence: 99%

Amine-intercalated montmorillonite matrices for enzyme immobilization and biosensing applications

Şeleci

Yalçınkaya

et al. 2012

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Amine-intercalated montmorillonite matrices for enzyme immobilization and biosensing applications

Şeleci

Yalçınkaya

et al. 2012

RSC Adv.

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“…Penelitian tentang penggunaan elektroda pasta karbon dengan modifier bentonit untuk digunakan dalam analisis merkuri belum banyak dilaporkan [2]. Tujuan dari kajian penelitian ini adalah untuk mengevaluasi model adsorpsi isothermal yang sesuai dengan adsorpsi merkuri oleh EPKTB.…”

Section: Pendahuluanunclassified

KAJIAN ADSORPSI MERKURI (II) DALAM LARUTAN Hg(NO3)2 OLEH ELEKTRODA PASTA KARBON TERMOFIDIKASI BENTONIT

Cahyadi¹,

Susilowati²

2013

JTBBT

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Berdasarkan hasil penelitian mengenai pembuatan sensor elektrokimia hasil modifikasi pasta karbon dengan mineral montmorilonite, terbuka kemungkinan untuk menghasilkan sensor elektrokimia hasil modifikasi pasta karbon dengan menggunakan bahan mineral lokal seperti bentonit. Kajian ini menjelaskan interaksi yang terjadi antara elektroda pasta karbon termodifikasi bentonit dengan ion merkuri (II) dalam larutan Hg(NO3)2 pada berbagai konsentrasi. Percobaan dilakukan dengan menggunakan elektroda pasta karbon termodifikasi bentonit (EPKTB) pada perbandingan komposisi karbon-bentonit (4:2), dengan tegangan 1 volt, waktu 3 menit, dan pH 3. Pengukuran hasil adsorpsi dilakukan menggunakan metode spektroskopi serapan atom (CV-AAS), dengan mengukur konsentrasi merkuri (II) sebelum dan sesudah prakonsentrasi dalam larutan Hg(NO3)2. Hasil percobaan menunjukkan interaksi yang terjadi mengikuti model adsorpsi isotermal Freundlich dengan energi adsorpsi sebesar 120,07 kJ/mol serta memiliki kapasitas adsorpsi sebesar 0,53 mg/g.Kata kunci : Adsorpsi, elektroda pasta karbon, bentonit, merkuri

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“…Montmorillonite-Na clay has well-layered lattice structure, high chemical and mechanical stability, high cationic exchange capacity and strong adsorptive properties attributed to the expandability of its internal layers. Montmorillonite clay was used successfully as a modifier in carbon paste electrode for determination of each of Cu (II) [37], Au (III) [38,39], Hg (II) [40,41], Eu (III) [42] and Pb (II) [43]. It has been used also in this laboratory for determination of some pharmaceutical compounds [44,45] and for simultaneous determination of Cd (II), Pb (II), Cu (II) and Hg (II) [46].…”

Section: Introductionmentioning

confidence: 99%

Square-Wave Adsorptive Cathodic Stripping Voltammeteric Determination of Manganese (II) Using a Carbon Paste Electrode Modified with Montmorillonite Clay

Beltagi¹,

Ismail²,

Ghoneim³

2013

AJAC

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Manganese is an essential micronutrient for all organisms; however at high concentrations it has a toxic effect. Manganese toxicity is a serious constraint to crop cultivation since it is taken-up by plants and can easily be passed into the food chain again causing symptoms of Parkinson's disease. A fully validated square-wave adsorptive cathodic stripping voltammetry method has been developed for determination of Mn (II) as a complex with 2-(5'-bromo-2'-pyridylazo) 5-diethylaminophenol in aqueous solutions using a carbon paste electrode (CPE) modified with montmorillonite-Na clay. The results showed that the modified CPE (90% (w/w) graphite powder and 10% (w/w) montmorillonite-Na clay) exhibited excellent electrochemical activity towards the investigated Mn (II) complex in acetate buffer of pH = 5.0. Factors affecting the performance of the modified carbon paste electrode and the sensitivity of the described squarewave stripping voltammetry method, including the electrode composition, concentration of ligand, pulse parameters and preconcentration conditions were examined. A detection limit (S/N = 3) of 0.015 μg•L −1 (2.73 × 10 −10 mol•L −1) Mn (II) was achieved when a preconcentration time of 240 s was applied. Insignificant interferences from various inorganic and organic species were estimated. The described square-wave adsorptive cathodic stripping voltammetry method coupled with the modified carbon paste electrode has been successfully applied to Mn (II) analysis in different water samples.

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Anodic stripping voltammetric determination of mercury by use of a sodium montmorillonite-modified carbon-paste electrode

Cited by 27 publications

References 14 publications

Amine-intercalated montmorillonite matrices for enzyme immobilization and biosensing applications

Amine-intercalated montmorillonite matrices for enzyme immobilization and biosensing applications

KAJIAN ADSORPSI MERKURI (II) DALAM LARUTAN Hg(NO3)2 OLEH ELEKTRODA PASTA KARBON TERMOFIDIKASI BENTONIT

Square-Wave Adsorptive Cathodic Stripping Voltammeteric Determination of Manganese (II) Using a Carbon Paste Electrode Modified with Montmorillonite Clay

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