The electrochemical oxidation of pentachlorophenol and its sensitive determination at chitosan modified carbon paste electrode

Xu, Jingli; Wang, Yazhen; Hongxin, Qiu

doi:10.1134/s1023193514060093

Cited by 13 publications

(2 citation statements)

References 32 publications

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“…Therefore, a sensitive and comfort system is necessary to analyze the environmental (both ground and surface) and portable water. The existing analytical methods such as fluorescence and Raman spectrophotometry [44][45][46] , photo-electrochemical methods [47][48][49][50] , chromatography 51,52 , chemi-luminescence [53][54][55] , and electrochemical methods 29,[56][57][58][59][60] are used widely to detect the chlorophenol in aqueous medium. Among the chlorophenol detection methods, the electrochemical method has better advantages and the electrochemical method based on current versus potential is becoming more popular to detect directly the toxic chemicals which are environmental unsafe and carcinogenic [61][62][63][64] .…”

mentioning

confidence: 99%

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Rahman

Karim

Alam

et al. 2020

Sci Rep

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Quantum dots (QDs) are semiconducting inorganic nanoparticles, tiny molecules of 2-10 nm sizes to strength the quantum confinements of electrons. The QDs are good enough to emit light onto electrons for exciting and returning to the ground state. Here, CdSe/ZnS core/shell QDs have been prepared and applied for electrochemical sensor development in this approach. Flat glassy carbon electrode (GCE) was coated with CdSe/ZnS QDs as very thin uniform layer to result of the selective and efficient sensor of 3-CP (3-chlorophenol). The significant analytical parameters were calculated from the calibration plot such as sensitivity (3.6392 µA µM −1 cm −2) and detection limit (26.09 ± 1.30 pM) with CdSe/ZnS/ GCE sensor probe by electrochemical approach. The calibration curve was fitted with the regression coefficient r 2 = 0.9906 in the range of 0.1 nM ∼ 0.1 mM concentration, which denoted as linear dynamic range (LDR). Besides these, it was performed the reproducibility in short response time and successfully validated the fabricated sensor for 3-CP in the real environmental and extracted samples. It is introduced as a noble route to detect the environmental phenolic contaminants using CdSe/ZnS QDs modified sensor by electrochemical method for the safety of healthcare and environmental fields at broad scales. Semiconductor quantum dots (QDs), in particular those of cadmium chalcogenides (CdS, CdSe, CdTe), have received steadily growing attention due to their high potential for various applications, such as sensing 1,2 , biological labeling 3-12 , light-emitting devices (LED) 13-17 , lasers 18,19 , and solar cells 20-22. Recently, the number of interest has been developed in the area of electrochemical sensors and biosensors in which CdSe are employed for the determination of clinical markers 23 and food 24 and environmental pollutants 25,26. CdSe have been using as electrochemical signal tracers to exploit the oxidation potentials of the metal ions forming them. This can also be attributed to some of the characteristics of CdSe, such as a large surface area-to-volume ratio, good interfacial properties with high surface reaction activity, high electron-transfer efficiency, excellent biocompatibility, and feasibility for surface modification 27-30. Moreover, metallic QDs also constitute a feasible option for electrochemical multiplexed assays due to their different stripping peak potentials 31,32. This is particularly true for the development of efficient, reliable, rapid, and cost-affordable analytical procedures for the determination of anthropogenic and natural substances of either organic or mineral nature that have toxic, persistent, and bio-accumulative properties. Due to the prevalent pollution of ground and surface water by chloro-organic chemicals such as chlorophenol derivatives, the public concern has been growing over the several few decades. Because, the chlorophenols (including 3-CP) have high toxicity and able to produce mutagenic, estrogenic and carcinogenic effects in human beings 33-36 and even unsafe for t...

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confidence: 99%

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Rahman

Karim

Alam

et al. 2020

Sci Rep

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“…It is sensitive, costeffective, easy to use, and selective in the real matrix, making it a viable choice for PCP detection (Baig and Kawde 2015;Jin and Maduraiveeran 2017;Mustafa 2024). However, there are still issues that need to be addressed in existing electrochemical methods, such as low sensitivity or narrow linear range (Xu et al 2014;Zou et al 2013), relatively complex construction and time-consuming processes (Yuan et al 2013;Zhu et al 2016) and the high cost of platinum, which is the most commonly used metal for electrochemical cells (Nesakumar et al 2017). Research has been and continues to be conducted to develop novel electrochemical sensors that are simple and quick to fabricate.…”

Section: Comparison Of Performance Of Instruments In the Detection Of...mentioning

confidence: 99%

Comparative examination of analytical instruments for detecting pentachlorophenol in wood and environmental samples

Koushika,

He,

Niati

et al. 2024

J Anal Sci Technol

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Pentachlorophenol (PCP) is a manmade chemical that is widely present in the environment and is mostly used as a wood preservative. Therefore, to conduct remediation studies, it is imperative to determine the most effective PCP analytical technique. PCP can be analyzed using a variety of analytical tools, including non-destructible methods like X-ray fluorescence spectrometry (XRF) and electrochemical sensors (EC), destructible tools like gas chromatography (GC), thin layer chromatography (TLC), colorimetry, ultraviolet–visible and infrared spectroscopy (UV–vis/IR), and high-performance liquid chromatography (HPLC). the colorimetric approach is less recommended because of its low sensitivity and precision, whereas TLC offers superior recovery rates and precision but is expensive, takes longer, and is unable to resolve complicated combinations. Higher recovery rates, sensitivity, precision, and superior separation are all offered by HPLC; however, its effectiveness is impacted by time, money, and solvent compatibility. The most favored destructible approach is GC because it is efficient in terms of both cost and time and offers superior precision and separation. Although XRF is frequently used in the wood industry to test PCP in treated wood and treating solutions, scientific research has avoided using it because of its high cost and ability to identify chemicals based only on their elemental composition—in the case of PCP, it is chloride. Among all methods, EC is shown to be more dependable than the other methods listed because it is extremely specialized, less expensive, and offers a faster response. It is possible to make more changes to the current analytical techniques, such as enhancing extraction techniques, creating a universal HPLC column, developing more affordable and high-precision EC electrodes, and evaluating a larger variety of samples from different matrices. This review has shed light on the many analytical tools available for determining PCP and the knowledge gaps in the field of study.

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Advances in the use of carbonaceous materials for the electrochemical determination of persistent organic pollutants. A review

Yang

Wang

et al. 2018

Microchim Acta

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Persistent organic pollutants (POPs) are key pollutants due to their persistence, refractory biodegradation, high toxicity and bioaccumulation in the food chain. This review (with 93 refs.) covers the progress made in the past decades in the application of carbonaceous materials for electrochemical detection of POPs as listed in the Stockholm Convention. Following an introduction into the field, typical carbonaceous materials for use in electrodes are discussed, with subsection on carbon nanotubes, graphene, reduced graphene oxide, graphitic carbon nitride and carbon dots. This is followed by a section on application of carbonaceous materials in electrochemical detection, with subsections on the use of carbon nanotubes, of (doped-) graphene, of reduced graphene oxide, of graphitic carbon nitride, and of carbon dots. The review concludes with conclusions and future perspectives. The detection mechanisms of POPs are also discussed. Graphical abstract Advanced carbonaceous materials for the electrochemical determination of persistent organic pollutants.

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The electrochemical oxidation of pentachlorophenol and its sensitive determination at chitosan modified carbon paste electrode

Cited by 13 publications

References 32 publications

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Comparative examination of analytical instruments for detecting pentachlorophenol in wood and environmental samples

Advances in the use of carbonaceous materials for the electrochemical determination of persistent organic pollutants. A review

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