Sensitive determination of platinum by the parallel catalytic hydrogen wave of Pt (IV) in the presence of persulfate

Xu, Mao Tian; Song, Jun; Li, Ning; Zhao, Chuan

doi:10.1016/s0022-0728(03)00319-x

Cited by 7 publications

(4 citation statements)

References 16 publications

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“…This phenomenon is quite similar to catalytic hydrogen waves at mercury electrodes, 37,38 and the difference is that the wave appeared at a modified GCE in this case. To verify this, the MoP modified electrodes were electrolyzed at −0.95 V (vs SCE) for 1 h in 0.10 M PBS (pH = 7.4) and 0.10 M tris-HCl buffer (pH = 7.4), respectively.…”

Section: ■ Results and Discussionsupporting

confidence: 70%

“…“Catalytic hydrogen waves” are owing to certain substances in solution which could catalyze hydrogen evolution reaction and diminish the overpotential of hydrogen ion reduction. , The classic catalytic hydrogen waves are mostly studied on mercury electrodes and generally are divided into two classes. The first one is that catalysts in solution change the surface state of electrodes.…”

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confidence: 99%

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Detection of Phosphate in Human Blood Based on a Catalytic Hydrogen Wave at a Molybdenum Phosphide Modified Electrode

et al. 2019

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Detection of inorganic phosphate is very important in environmental and health care applications. In this work, we found that phenomenon similar to “catalytic hydrogen wave” occurred on a molybdenum phosphide (MoP) modified electrode in the presence of phosphate, that is, a new wave of catalytic hydrogen evolution appeared before the normal hydrogen evolution reaction. The catalytic hydrogen wave arose from a structure similar to phosphomolybdic acid (noted as MoPO), which was formed by the interaction between phosphate and molybdenum oxides on the surface of the MoP modified electrode, resulting in the altered surface structure and adjusted interface catalytic activity. A novel phosphate electrochemical sensor was constructed based on this phenomenon with a linear range from 0.10 to 20.0 mmol·L–1, an actually determined minimum concentration of 0.030 mmol·L–1, and recoveries of 94%–107%, and this sensor was successfully applied to the detection of phosphate in human blood. Furthermore, this work proposes a new sensing method based on catalytic hydrogen waves on the modified electrodes.

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Section: ■ Results and Discussionsupporting

confidence: 70%

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confidence: 99%

Detection of Phosphate in Human Blood Based on a Catalytic Hydrogen Wave at a Molybdenum Phosphide Modified Electrode

et al. 2019

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“…Catalytic hydrogen waves (CHW) occur due to a classical reaction in which certain substances in solution catalyze the hydrogen evolution reaction and thus can reduce the overpotential for the hydrogen ion reduction, 180 are based on this idea, and a novel sensor was developed by Zhang et al 181 In this method, a wave corresponding to catalytic hydrogen evolution was observed on the electrode surface modified with molybdenum phosphide (MoP) in the presence of phosphate. The interaction between molybdenum oxides on the surface of MoP microparticles and phosphate results in a structure (change in catalytic properties) similar to phosphomolybdic acid (MoPO), allowing quantitative detection of phosphate in the human blood.…”

Section: Phosphorus (P) Ion Detectionmentioning

confidence: 99%

Development of electrochemical sensors for quick detection of environmental (soil and water) NPK ions

Hossain,

Khaleque,

Ali

et al. 2024

RSC Adv.

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“…Over recent years, great efforts have been made in our laboratory to study the catalytic wave of organic compounds in the presence of oxidant [7,8,9,10], which is generally ascribed to the chemical regeneration of reducible groups via oxidation of unstable intermediates such as free radicals. When a suitable oxidant is present it is observed that the catalytic hydrogen wave can be enhanced to produce the so-called parallel catalytic hydrogen wave with higher analytical sensitivity [11]. Surveying the literature revealed that nothing appears to have been published about the electrochemical behavior of TE in general or its catalytic hydrogen wave in particular.…”

Section: Maotian T Xu · Junfeng F Song · Ning LImentioning

confidence: 99%

Rapid determination of telmisartan in pharmaceuticals and serum by the parallel catalytic hydrogen wave method

Song

2003

Analytical and Bioanalytical Chemistry

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The polarographic characteristics of telmisartan have been investigated in 0.8 mol L(-1) NH3.H2O-NH4Cl (pH 8.9)-0.01 mol L(-1) H2O2 as supporting electrolyte. The results demonstrate that the polarographic reduction wave at ca. -1.30 V in the absence of H2O2 is a catalytic hydrogen wave, and the reduction wave enhanced by H2O2 is a so-called parallel catalytic hydrogen wave. The analytical sensitivity of the parallel catalytic hydrogen wave is ca. 60 times higher than that of the corresponding catalytic hydrogen wave. Based on the parallel catalytic hydrogen wave a novel method has been developed for determination of telmisartan by linear sweep polarography. The calibration curve is linear in the range 2.0x10(-8)-2.0x10(-6) mol L(-1) and the detection limit is 1.0x10(-8) mol L(-1). The precision is excellent with relative standard deviations of 2.6% at a concentration of 1.0x10(-7) mol L(-1) telmisartan. The proposed method has been applied to the direct determination of the telmisartan in capsule forms and biological samples. The proposed method has been proved to be advantageous over existing CZE and MEKC methods in simplicity, rapidity, and reproducibility.

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Sensitive determination of platinum by the parallel catalytic hydrogen wave of Pt (IV) in the presence of persulfate

Cited by 7 publications

References 16 publications

Detection of Phosphate in Human Blood Based on a Catalytic Hydrogen Wave at a Molybdenum Phosphide Modified Electrode

Detection of Phosphate in Human Blood Based on a Catalytic Hydrogen Wave at a Molybdenum Phosphide Modified Electrode

Development of electrochemical sensors for quick detection of environmental (soil and water) NPK ions

Rapid determination of telmisartan in pharmaceuticals and serum by the parallel catalytic hydrogen wave method

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