Electrochemical methods for monitoring of environmental carcinogens

Barek, Jiřı́; Cvačka, Josef; Muck, Alexander; Quaiserova, Veronika; Zima, Jiřı́

doi:10.1007/s002160100707

Cited by 54 publications

(35 citation statements)

References 3 publications

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“…Percentage recovery in the range 99.06% to 99.77% , is quite good. Although lower detection limits and linear range of concentrations are available for estimation of some of the aromatic amines by using other reported methods involving/ not involving periodate oxidations [1][2][3][4][5][6][7] , all of these methods require lengthy preconcentration and pretreatment of the samples including many complex reactions of the sample with oxidants and chromogenic substances. Further, most of these methods require not-readily available facilities like GC-ECD, GC-MS, solid phase extraction coupled with HPLC, differential pulse voltammetry and adsorptive stripping voltammetry, flow injection method etc.…”

Section: Resultsmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10] There is one report available in literature regarding the kinetic-spectrophotometric estimation of some anilines based on their oxidation by periodate ion in aqueous/ mixed media. 11 Earlier reports have proposed the formation of binary or ternary complex formation as an intermediate respectively, in the reaction between aromatic amines and periodate ion either under uncatalysed [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] or Mn II catalysed conditions.…”

Section: Introductionmentioning

confidence: 99%

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NEW METHOD FOR MICROGRAM DETERMINATION OF p-PHENETIDINE

2017

Rasayan J Chem

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The reaction, Mn II catalysed reduction of periodate by p-phenetidine in acetone-water medium is already reported by us to be first order in reactants and catalyst with main reaction product being 4-ethoxy-1, 2-benzoquinone. On the basis of best fit conditions in terms of pH, dielectric constant of medium, temperature etc., a new and simple kineticspectrophotometric method was developed for microgram determination of p-phenetidine in the range 1.29µg cm -3 to 9.79µg cm -3 . This method is being presented in present paper. Calibration curves in terms of absorbance at fix time Vs concentration of p-phenetidine as well as in terms of initial rate or pseudo first order rate constant Vs concentration, were obtained and their characteristics are being presented and discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

NEW METHOD FOR MICROGRAM DETERMINATION OF p-PHENETIDINE

2017

Rasayan J Chem

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“…Açık havada katı halden gaz haline geçtiğinden haşere ile mücadelede ve güveleri [12][13]. Voltametrik tekniklerin üstün yanı; eser miktardaki metallerin, organik ve inorganik maddelerin analiz edilmesi, elektroaktif türlere karşı seçiciliğe sahip olması, geniş bir doğrusal çalışma aralığına izin vermesi, hızlı, taşınabilir ve düşük maliyetli analiz yapılabilmesidir [14][15][16].…”

Section: Introductionunclassified

“…Son yıllarda yeni elektrot şekli ve tasarımı (modifiye elektrotlar), elektrot aktivasyon işlemleri ve modern teknikler (puls-dalga formları, adsorptif teknikler, sıyırma) kullanılarak gerçekleştirilen ''katı elektrot voltametrisi'' sayesinde pikomolar altı derişim düzeylerinde çalışmaya olanak vermesinden dolayı voltametrik teknikler üstün özelliklere sahip olmuşlardır [16].…”

Section: Introductionunclassified

Bor Katkılı Elmas Elektrot ile Naftalin’in Voltametrik Davranışı: Kare Dalga Anodik Sıyırma Voltametrisi ile Miktar Tayini

Levent

2017

SDÜ Fen Bil Enst Der

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Anahtar Kelimeler PAH, Naftalin, Voltametri, Bor katkılı elmas elektrot Özet: Bu çalışmada, Naftalin bor katkılı elmas elektrot yüzeyindeki elektrokimyasal özellikleri, değişik çözelti ortamları ve geniş bir pH aralığında incelenmiştir. İlk olarak çalışma elektrotun performansını etkileyen değişkenler (destek elektrolitinin seçimi, elektrot temizleme yöntemi, iyon şiddeti ve pH, biriktirme/ölçüm çözeltisinin bileşimi, biriktirme gerilimi/süresi, voltametrik dalga formu değişkenleri); voltametri ve/ya da sıyırma voltametrisi teknikleri kullanılarak ayrıntılı olarak araştırılmıştır. Daha sonra önerilen yöntemlerin elde edilen optimum koşullarda Naftalin için doğrusallık (0.9-4.5 µM), saptama sınırı (LOD; 0.225 µM) ve kesinlik (% BSS 2.26) açısından validasyonu gerçekleştirilmiştir. Geliştirilen KD-ASV yöntemi, çeşme suyunda naftalinin analizi için standart katma yöntemi kullanılarak başarılı bir şekilde uygulanmıştır. Voltammetric Behavior of Naphtahalene using Boron Doped Diamond Electrode:Determination by Square-Wave Anodic Stripping Voltammetry Keywords PAH, Naphthalane, Voltammetry, Boron doped diamond electrod Abstract: In this study, the electrochemical behavior of naphthalane on the surface boron doped diamond electrode(BDD) was examined in various buffer solutions and in a wide pH range. Firstly, variables that influence the performance of the first working electrode such as the selection of the supporting electrolyte and stripping methods, ionic strength and pH, composition of the measurment as well accumulation solution, accumulation potential and accumalation time, voltammetric waveform was investigated comprehensively by voltammetry or stripping voltammetry. Then, optimum conditions of the proposed method for naphthalane were found (0.9-4.5 µM), 0.225, % BSS 2.26 for linearity, limit of detection(LOD) and precision respectively. Also, the developed SW-ASV method, the standard addition method for the analysis of naphthalane in tap water was successfully applied.

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“…For certain, admittedly not too frequent cases, modern polarographic and voltammetric techniques are really the best method and quite frequently they are among the ™fit for the purpose methods∫. The polarographic and voltammetric methods developed in our UNESCO Laboratory of Environmental Electrochemistry for the determination of sub micro and subnanomolar concentrations of selected chemical carcinogens [41], nitrated pesticides or growth stimulators [42] and dyes [43] can serve as example.…”

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confidence: 99%

Eighty Years of Polarography – History and Future

Barek

Zima

2003

Electroanalysis

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Since 1922, when Professor Jaroslav Heyrovsky ¬ carried out his pioneering experiment with a dropping mercury electrode, polarography showed remarkable ability to adjust to ever increasing demands on the sensitivity and selectivity and up to now mercury electrodes are among the best sensors for electroanalytical measurements. The aim of this contribution is to show both the historical development of these techniques and their presence and possible future developments and to show that even today in certain cases polarographic and voltammetric techniques on mercury electrodes can successfully compete with modern separation and spectrometric techniques.

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Electrochemical methods for monitoring of environmental carcinogens

Cited by 54 publications

References 3 publications

NEW METHOD FOR MICROGRAM DETERMINATION OF p-PHENETIDINE

NEW METHOD FOR MICROGRAM DETERMINATION OF p-PHENETIDINE

Bor Katkılı Elmas Elektrot ile Naftalin’in Voltametrik Davranışı: Kare Dalga Anodik Sıyırma Voltametrisi ile Miktar Tayini

Eighty Years of Polarography – History and Future

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