Development of a novel hollow fiber- pencil graphite modified electrochemical sensor for the ultra-trace analysis of glyphosate

Gholivand, Mohammad Bagher; Akbari, Ali; Norouzi, Leila

doi:10.1016/j.snb.2018.05.170

Cited by 69 publications

(30 citation statements)

References 39 publications

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“…The increase of I p,a is observed until pH 6.5; after this, a decrease of I p,a is observed. The deprotonation of GLY as a compound with four acidic groups (p K a value of 2.0, 2.6, 5.6, and 10.6) 39,40 is pH-dependent. The functional groups in GLY molecules are protonated in the more acidic media, reducing their binding ability.…”

Section: Resultsmentioning

confidence: 99%

Fast, sensitive and selective simultaneous determination of paraquat and glyphosate herbicides in water samples using a compact electrochemical sensor

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Fast, sensitive and selective simultaneous determination of paraquat and glyphosate herbicides in water samples using a compact electrochemical sensor

et al. 2022

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“…Glyphosate has been reported to be detected using bare and modified electrodes made of gold [28,[37][38][39][40][41][42][43][44], copper [45][46][47], carbon [48][49][50][51][52][53][54], mercury [55][56][57], and platinum [58,59]. Electrochemical methods, type of electrodes, analytical performance, measurement condition, and sample matrix for glyphosate determination are summarized in Table 1.…”

Section: Electrochemical Detection Of Glyphosatementioning

confidence: 99%

“…A pencil graphite-based electrode (PGE) modified with multi-walled carbon nanotubes-ionic liquid (MWCNTs-IL) and copper oxide (CuO) nanoparticle composite was also utilized for glyphosate sensing in soil and river water samples. The excellent electrical property of CuO and its complex forming property with glyphosate coupled to the electrical conductivity and high surface area of MWCNTs-IL attributed to the improved sensitivity and effectiveness of the electrode [53].…”

Section: Electrochemical Detection Of Glyphosatementioning

confidence: 99%

“…The detection principle is based on the current generated when carbohydrates, amino acids, amines, and sulfur compounds adsorb on gold and platinum electrodes under alkaline Carbon is often used as a low-cost, versatile and easy-to-handle material for electrochemical sensing. Several articles report the use of carbon as the working electrode for glyphosate detection [48][49][50][51][52][53][54]. Oliveira et al [49] used a simple carbon paste electrode (CPE) for the oxidation of the isopropylamine salt form of glyphosate.…”

Section: Electrochemical Detection Of Glyphosatementioning

confidence: 99%

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Recent Development on the Electrochemical Detection of Selected Pesticides: A Focused Review

Noori¹,

Mortensen

Geto³

2020

Sensors

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Pesticides are heavily used in agriculture to protect crops from diseases, insects, and weeds. However, only a fraction of the used pesticides reaches the target and the rest slips through the soil, causing the contamination of ground-and surface water resources. Given the emerging interest in the on-site detection of analytes that can replace traditional chromatographic techniques, alternative methods for pesticide measuring have recently encountered remarkable attention. This review gives a focused overview of the literature related to the electrochemical detection of selected pesticides. Here, we focus on the electrochemical detection of three important pesticides; glyphosate, lindane and bentazone using a variety of electrochemical detection techniques, electrode materials, electrolyte media, and sample matrix. The review summarizes the different electrochemical studies and provides an overview of the analytical performances reported such as; the limits of detection and linearity range. This article highlights the advancements in pesticide detection of the selected pesticides using electrochemical methods and point towards the challenges and needed efforts to achieve electrochemical detection suitable for on-site applications.

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“…SPAns have been applied in diverse applications such as solar cells , fuel cells , batteries , electrochromic devices , electrocatalysis , corrosion protection , supercapacitors and sensors . The deposition of copper species on SPAn films has been explored and used for the fabrication of chemical sensors; an electrochemical sensor for the determination of hydrogen peroxide was constructed by electrodeposition of Cu nanoparticles on the precursor film poly‐p‐aminobenzene sulfonic acid electrodeposited on glassy carbon (GC) electrode .…”

Section: Introductionmentioning

confidence: 99%

Electrochemically Generated Recognition Sites in Self‐doped Polyaniline Modified Electrodes for Voltammetric and Potentiometric Determination of Copper(II) Ion

Mohammadabadi

Zanganeh

2017

Electroanalysis

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Chemical recognition elements for copper(II) ion have been generated in electrodes modified with poly(aniline‐co‐metanilic acid), P(An‐co‐MA), membrane and the resulting electrodes were used as selective sensors for voltammetric and potentiometric determination of this ion in an extended pH range. The P(An‐co‐MA) membrane was electrodeposited from aqueous mixed monomer solutions of An and MA, without the presence of a supporting electrolyte. For generating the recognition elements, P(An‐co‐MA) modified electrodes were subjected to several consecutive reduction/oxidation potential steps in copper(II) ion solution. It seems that during these potential steps, the receptor sites of the membrane are adjusted to the size, complexing property and hard/soft nature of copper(II) ion. This electrochemically mediated templating process, provided a selective sensor for determination of copper(II) ion. The results of preconcentration/differential pulse anodic stripping voltammetry, indicated analytical relation between the peak current and concentration of copper(II) from 1.0×10−9 to 1.0×10−4 M. The interference effect of various metal ions was explored and it was found that only mercury and silver ions show a considerable interference. The sensor exhibited selective potentiometric response for copper(II) over a wide concentration range (1.0×10−8 to 1.0×10−3 M) with a Nernstian slope of 27.9±0.3 mV per decade of copper(II) ion activity.

show abstract

Development of a novel hollow fiber- pencil graphite modified electrochemical sensor for the ultra-trace analysis of glyphosate

Cited by 69 publications

References 39 publications

Fast, sensitive and selective simultaneous determination of paraquat and glyphosate herbicides in water samples using a compact electrochemical sensor

Fast, sensitive and selective simultaneous determination of paraquat and glyphosate herbicides in water samples using a compact electrochemical sensor

Recent Development on the Electrochemical Detection of Selected Pesticides: A Focused Review

Electrochemically Generated Recognition Sites in Self‐doped Polyaniline Modified Electrodes for Voltammetric and Potentiometric Determination of Copper(II) Ion

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