Quantitative oxidations by potassium ferricyanide

Sant, B. R.

doi:10.1016/0039-9140(60)80028-8

Cited by 13 publications

(3 citation statements)

References 35 publications

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“…异烟肼分子中的酰肼基具有较强的还原性, 可与氧化性的物质发生氧化还原反应. 具有氧化性的铁氰化钾 [27] , 常被用作电化学探针 [28] , 在化学发光分析法中也广泛应用 [29] . 本文基于铁氰化钾与异烟肼反应生成亚铁氰化钾, 再与 Zn 2+ 作用生成 K 2 Zn 3 [Fe(CN) 6 ] 2 粒子 [30] 引起体系共振光散射信号强度显著增强, 且增强的散射信号强度与异烟肼的浓度在一定范围内成正比, 建立了一种测定异烟肼的新方法.…”

Section: 引言unclassified

基于与铁氰化钾和Zn<sup>2+</sup>作用共振光散射法测定异烟肼

He¹,

QIN

et al. 2011

Sci. Sin.-Chim

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在酸性介质中, 异烟肼能将铁氰酸根离子还原成亚铁氰酸根离子, 后者与硫酸锌反应生成 K 2 Zn 3 [Fe(CN) 6 ] 2 粒子引起体系的共振光散射信号显著增强. 在 345 nm 处增强的散射信号强度ΔI RLS 与异烟肼的浓度在 0.01~1.0 μg/mL 范围内呈线性关系, 据此建立了一种检测异烟肼含量的共振光散射(RLS)分析方法. 线性回归方程为ΔI RLS =136.1 + 4239c (c, μg/mL), 相关系数 (r)为 0.9984, 检测限(3σ)为 3.8 ng/mL. 该方法已成功用于异烟肼片剂及血清样品的测定. 此外, 文中还结合吸收光谱, 动态光散射, 扫描电子显微镜等表征手段对反应机理和 RLS 信号强度增强的原因进行了探讨.

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Section: 引言unclassified

基于与铁氰化钾和Zn<sup>2+</sup>作用共振光散射法测定异烟肼

He¹,

QIN

et al. 2011

Sci. Sin.-Chim

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“…So in this study, the cell has been designed in such a way that the redox potential is entirely dependent on the glucose concentration and these two parameters can be correlated by numerical models to enhance the accuracy. It is noted that potassium hexacyanoferrate(III) in mild basic conditions and at 363 K, acts as an ideal oxidant [23,27] for glucose to gluconic acid oxidation with a standard reduction potential (E°) for the couple [Fe(CN) 6 ] 3-/ [Fe(CN) 6 ] 4of 0.3560 V [28]. So this half-cell was chosen to design this potentiometric sensor through glucose oxidation.…”

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confidence: 99%

Numerical Modeling on Non-enzymatic, Potentiometric Glucose Sensor

Kanagasabapathy

Bapu

Linga

et al. 2012

Port. Electrochim. Acta

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A novel, enzymeless electrochemical sensing mechanism for glucose based on potentiometric measurement was proposed using the mediator hexacyanoferrate. In this methodology, EMF of the cell exclusively depends on glucose concentration and independent on reference half-cell electrode potential or mediator concentration or any other interfering factors. Electrochemical as well as mathematical models were proposed. Numerical computations along with boundary conditions were evaluated for the proposed models, to reduce the deviation in the interpolated results. Molar ratio of mediator to glucose was correlated with EMF cell. Numerical simulations, Legendre polynomials and Lagrange coefficients iterations can be executed through computer programs.

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“…The possibilities of ferricyanide titrations have been reviewed for a number of metal ions. 366 Reduction processes include determination of thallium with chromium(I1) ions using conventional arrangement~,~~7 and the use of this titrant for determining small amounts of molybdate in the presence of excess of thiocyanate has been Cerium(m) ions in alkaline solutions have provided an accurate method for determining milligram quantities of ferricyanide and permanganate with good end-points in 4~-potassium carbonate solution. Concentrations down to 1.8 x mequiv./l.…”

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confidence: 99%