Analyte Pulse Perturbation Technique: A Tool for Analytical Determinations in Far-from-Equilibrium Dynamic Systems

Jiménez-Prieto, Rafael; Silva, Manuel.; Pérez‐Bendito, Dolores

doi:10.1021/ac00100a007

Cited by 91 publications

(53 citation statements)

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“…[9][10][11][12] Tyson et al determined Hg(II) and Tl(I) in a double-line flow-injection manifold including a 30 µL flow cell and UV-VIS spectrophotometer. 13 Several other researchers have improved on the idea by adding different catalysts or inhibitors to the reaction for the determination of Fe(CN)6 [3][4][5][6][7][8][9][10][11][12][13][14]15 and Mn(II). 16 Recently, oscillating systems involving no halogen compound (particulary the CuSO4-catalyzed reaction of hydrogen peroxide with thiocyanate ion) have aroused increasing attention.…”

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confidence: 99%

Kinetic Determination of Silver Ion by Its Perturbation on Belousov-Zhabotinskii Oscillating Chemical Reaction Using Potentiometric Method

2004

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confidence: 99%

Kinetic Determination of Silver Ion by Its Perturbation on Belousov-Zhabotinskii Oscillating Chemical Reaction Using Potentiometric Method

2004

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“…Sodium chloride was used to keep a moderate ionic strength of oscillating system and to avoid passivation of the Pt electrode 23 . Thus, 1.20 mol L -1 of NaCl was adopted in this work.…”

Section: Influence Of Experimental Variablesmentioning

confidence: 99%

Determination of L-aspartic acid by using the Cu(II)-catalyzed oscillating reaction

Gao¹,

Lv²,

Sun³

et al. 2009

J. Braz. Chem. Soc.

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Foi proposto um procedimento conveniente por meio de um sistema químico oscilante como uma ferramenta analítica para a determinação de ácido L-aspártico (L-Asp). O sistema envolve a reação entre peróxido de hidrogênio e tiocianato de sódio, catalizada por íons Cu(II) em meio alcalino. O método baseia-se na relação linear entre as mudanças no período de oscilação e o logarítmo da concentração de ácido L-aspártico. Condições otimizadas foram posteriormente validadas para garantir a confiabilidade do método. Sob condições otimizadas, o gráfico de calibração é linear e proporcional à concentração do ácido L-aspártico no intervalo de 1,17 × 10 -5 mol L -1 a 7,10 × 10 -8 mol L -1 com um coeficiente de regressão linear de 0,9990 e RSD de 2,75%. O limite de determinação (LOD) foi de 5,58 x 10 -8 mol L -1 . O método proposto foi empregado na determinação do ácido L-aspártico em amostras de medicamentos. Além disto, a técnica HPLC foi empregada para confirmar os resultados.A convenient procedure by means of oscillating chemical system as an analytical tool to determine the L-aspartic acid (L-Asp) is proposed. The system involves the Cu(II)-catalyzed reaction between hydrogen peroxide and sodium thiocyanate in an alkaline medium. The method relies on the linear relationship between the changes in the oscillation period and the logarithm of concentration of L-aspartic acid. Optimized conditions were further validated to ensure the reliability of the method. Under optimum conditions, the calibration plot is linearly proportional to the concentration of L-aspartic acid over the range from 1.17 × 10 -5 mol L -1 to 7.10 × 10 -8 mol L -1 with a corresponding regression coefficient of 0.9990 (RSD 2.75%). A lower limit of determination (LOD) was 5.58 × 10 -8 mol L -1 . The proposed method has been used to determine L-aspartic acid in drug sample. Additionally, the HPLC technique was also used to confirm the determination results.

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“…The first application of it was to determine trace amounts of ruthenium(III) which was the contribution from Tikhonova et al [12]. Jimenez-Prieto proposed an Analyte Pulse Perturbation Technique (APP) that facilitates the use of oscillating reaction in determinations [13]. As an analytical tool, classical BZ reaction was designed to determine various analytes such as metal ions [14][15], organics [16], medicine [17][18], polyphenols [19].…”

Section: Introductionmentioning

confidence: 99%

Kinetic determination of tannic acid using a Belousov-Zhabotinskii oscillating system catalyzed by a macrocyclic complex

Liu

Chen

et al. 2015

Open Chemistry

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An analytical method for the determination of tannic acid is proposed by the sequential perturbation caused by different amounts of tannic acid on the Belousov-Zhabotinskii oscillating system. The oscillating system is catalyzed by tetraazamacrocyclic complex [CuL](ClO 4 ) 2, where L is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene. The method relies on the linear relationship between the changes in the inhibition time and the logarithm of the concentration of tannic acid. The calibration curve obeys a linear equation very well when the concentration of tannic acid is over the range of 6.25 × 10 -7 ~ 1.56 × 10 -5 M (n = 16, R = 0.9984). This analytical method, equipped with a simple instrument, provides a new way to accurate determination of tannic acid.

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Analyte Pulse Perturbation Technique: A Tool for Analytical Determinations in Far-from-Equilibrium Dynamic Systems

Cited by 91 publications

References 0 publications

Kinetic Determination of Silver Ion by Its Perturbation on Belousov-Zhabotinskii Oscillating Chemical Reaction Using Potentiometric Method

Kinetic Determination of Silver Ion by Its Perturbation on Belousov-Zhabotinskii Oscillating Chemical Reaction Using Potentiometric Method

Determination of L-aspartic acid by using the Cu(II)-catalyzed oscillating reaction

Kinetic determination of tannic acid using a Belousov-Zhabotinskii oscillating system catalyzed by a macrocyclic complex

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