Determination of Perfluorooctanesulfonic acid in water by polydopamine molecularly imprinted /Gold nanoparticles sensor

Gao, Yanmei; Gou, Wanglei; Zeng, Wanpen; Chen, Wen; Jiang, Jinlong; Lu, Jie

doi:10.1016/j.microc.2022.108378

Cited by 17 publications

(7 citation statements)

References 34 publications

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“…as shown in figure 11(C), there was a linear relationship between the peak potential of the reduction peak of DES and the scan rate, E pc (V) = −0.73336ν (V s −1 ) − 0.3369 (R 2 = 0.9911). Depended on the Laviron theory [39], The electron transfer coefficient can be calculated by the Langmuir adsorption isotherm equation: i p = nFQv/4RT, F is the Faraday constant (96485.3383 C mol −1 ), n represents the number of electron transfers, R is the molar gas constant (8.314 J mol 1 • K 1 ), Q is the peak area of the reduction peak calculated in terms of charge, v is the scan rate (V s −1 ), and T is the thermodynamic temperature (298 K). Based on the above equation, n was determined to be 2.…”

Section: Selection Of Buffer Solution Typementioning

confidence: 99%

Determination of diethylstilbestrol in environmental water based on electrochemical senser modified with vanadium based metal organic framework material composite

Zeng,

Wang,

Zhou

et al. 2024

Nanotechnology

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In this research, the MIL-47/ACET/Nafion/GCE electrochemical senser for the determination of diethylstilbestrol (DES) was prepared with vanadyl sulfate (VOSO4·nH2O) and terephthalic acid (H2BDC) as the main raw materials, compounded with acetylene black (ACET) and perfluorosulfonic acid polymer (Nafion). The compound DES belongs to the category of estrogens, and prolonged exposure to the environment can have detrimental effects on the physiological functioning of both humans and animals. Due to the strong DES enrichment performance of MIL-47(V-MOFs) with large specific surface area, in addition to the excellent conductivity and electrocatalysis of composite materials, this modified senser had good electrochemical response to DES. With differential pulse voltammetry, in optimum condition of 0.1 M NaH2PO4–Na2HPO4 at pH = 7.0, potential interval of −1.0 to 1.0 V, enrichment time of 120 s and enrichment potential of 0.2 V, there was a good linear relationship between peak current and the concentration of DES over the range of 0.1 and 50 μM, and the limit of detection was 0.008 μM. The sensor accurately detected DES in actual water samples, with recovery rates ranging from 89.21% to 105.3%. The electrochemical sensor was simple to prepare and had practical significance for the detection of DES in water. The research results of the sensor provide another alternative analytical means for the sensitive detection of DES in the environment, which is important for maintaining public health.

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Section: Selection Of Buffer Solution Typementioning

confidence: 99%

Determination of diethylstilbestrol in environmental water based on electrochemical senser modified with vanadium based metal organic framework material composite

Zeng,

Wang,

Zhou

et al. 2024

Nanotechnology

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“…Glassy carbon electrodes (GCE) with fold nanoparticles were prepared through the in situ electropolymerization of dopamine using PFOS as template. They were applied to water samples, previously iltered, and presented a LOD of 2.0 µg/L (Gao et al, 2023). Modi ications to electrode surface with a thin coat of gold nanostar (AuNS) enhanced the voltametric response and resulted in the detection of PFOS in 7.5 ppt in tap water (Lu et al, 2022).…”

Section: Electrochemical Sensorsmentioning

confidence: 99%

Analysis of needs for enforcement of PFAS in articles and chemical products

Krause,

Stoesser,

de Carvalho

et al. 2024

TemaNord

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Introduction 1.1 Objectives of the project 1.1.1 Methodology 1.1.2 Literature search 1.1.3 Stakeholder consultation activities 2 Overview on PFAS analytical methods 2.1 Determination of total luorine content 2.1.1 Combustion Ion Chromatography (CIC) 2.1.2 High resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GF-MAS) 2.1.3 Particle induced gamma-ray Emission (PIGE) 2.1.4 Laser-induced breakdown spectroscopy (LIBS) 2.1.5 X-ray photoelectron spectroscopy (XPS) 2.1.6 WD-X-ray Fluorescence (WDXRF) 2.1.7 Instrumental Neutron Activation Analysis (INAA) 2.1.8 Summary of key information 2.2 Non-targeted methods & suspect screening using High Resolution Mass Spectrometry (HRMS) 2.2.1 Overview of high-resolution mass spectrometry (HRMS) approaches 2

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“…Therefore, it is required to first screen an unknown sample for the presence of small PFAS molecules such as PFBA and PFBS. Gao et al prepared an electrochemical sensor for the detection of PFOS in real water samples [126]. The sensor (PFOS-MIPPDA/AuNPs/GCE) was made from a GCE modified with gold nanoparticles (AuNPs) and an electropolymerized molecularly imprinted polydopamine (DA) coating with PFOS as the template.…”

Section: Imprinting On Nanoparticlesmentioning

confidence: 99%

An Overview on Recent Advances in Biomimetic Sensors for the Detection of Perfluoroalkyl Substances

Ahmadi Tabar,

Lowdon,

Bakhshi Sichani

et al. 2023

Sensors

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Per- and polyfluoroalkyl substances (PFAS) are a class of materials that have been widely used in the industrial production of a wide range of products. After decades of bioaccumulation in the environment, research has demonstrated that these compounds are toxic and potentially carcinogenic. Therefore, it is essential to map the extent of the problem to be able to remediate it properly in the next few decades. Current state-of-the-art detection platforms, however, are lab based and therefore too expensive and time-consuming for routine screening. Traditional biosensor tests based on, e.g., lateral flow assays may struggle with the low regulatory levels of PFAS (ng/mL), the complexity of environmental matrices and the presence of coexisting chemicals. Therefore, a lot of research effort has been directed towards the development of biomimetic receptors and their implementation into handheld, low-cost sensors. Numerous research groups have developed PFAS sensors based on molecularly imprinted polymers (MIPs), metal–organic frameworks (MOFs) or aptamers. In order to transform these research efforts into tangible devices and implement them into environmental applications, it is necessary to provide an overview of these research efforts. This review aims to provide this overview and critically compare several technologies to each other to provide a recommendation for the direction of future research efforts focused on the development of the next generation of biomimetic PFAS sensors.

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Determination of Perfluorooctanesulfonic acid in water by polydopamine molecularly imprinted /Gold nanoparticles sensor

Cited by 17 publications

References 34 publications

Determination of diethylstilbestrol in environmental water based on electrochemical senser modified with vanadium based metal organic framework material composite

Determination of diethylstilbestrol in environmental water based on electrochemical senser modified with vanadium based metal organic framework material composite

Analysis of needs for enforcement of PFAS in articles and chemical products

An Overview on Recent Advances in Biomimetic Sensors for the Detection of Perfluoroalkyl Substances

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