Electrochemical devices for the detection of priority pollutants listed in the EU water framework directive

Díaz‐González, María; Gutiérrez-Capitán, Manuel; Niu, Pengfei; Baldi, Antonio; Jiménez-Jorquera, Cecilia; Fernández‐Sánchez, César

doi:10.1016/j.trac.2015.11.023

Cited by 52 publications

(32 citation statements)

References 93 publications

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“…Alternative spectroscopic techniques, as the surface‐enhanced Raman spectroscopy (SERS) and the fluorescence spectroscopy have emerged for the in situ PAH identification. Very few electrochemical platforms, mainly based on voltammetric biosensors, have been developed to detect different PAHs due to the trace concentration of these pollutants in water . These devices are basically focused on using electroactive bio‐receptors for immunosensing, for example, benzo[a]pyrene .…”

Section: Methodsmentioning

confidence: 99%

Carbon‐Rich Monolayers on ITO as Highly Sensitive Platforms for Detecting Polycyclic Aromatic Hydrocarbons in Water: The Case of Pyrene

Muñoz

Crivillers

Mas‐Torrent

2017

Chemistry A European J

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The determination of polycyclic aromatic hydrocarbons (PAHs) in water at low levels is a current challenge given their great impact on the health and safety of the public. Here, a novel pyrene-based self-assembled monolayer (SAM) platform is exploited as an electrochemical sensing recognition device. Interestingly, the formation of π-π sandwich complexes between PAHs and the recognition element switches the surface electron transfer capability. The unique supramolecular interaction between identical aromatic molecules provides a highly sensitive and selective sensor for pyrene in the order of part per trillion. Accordingly, and using pyrene as a proof-of-concept, this work presents the basis for an "at-point-of-use" impedimetric sensor focused on a highly sensitive carbon-rich SAM for PAHs determination in water at ultra-trace levels.

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Section: Methodsmentioning

confidence: 99%

Carbon‐Rich Monolayers on ITO as Highly Sensitive Platforms for Detecting Polycyclic Aromatic Hydrocarbons in Water: The Case of Pyrene

Muñoz

Crivillers

Mas‐Torrent

2017

Chemistry A European J

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“…The inorganic contaminants that can be found in water supplies include silica, sodium, fluoride, cyanide, sulfur, ammonia, nitrate, and chlorine . Furthermore, other critical hazardous substances that have been detected in urban areas are heavy metals, for example, cadmium, lead, arsenic, mercury, and nickel . Additionally, within inorganic compounds should be included the radiological elements, such as uranium (U 234 and U 238 ) and radium (Ra 226 and Ra 228 ), radioisotopes used in the industry …”

Section: Water Contaminantsmentioning

confidence: 99%

Tailoring Covalent Organic Frameworks To Capture Water Contaminants

Fernandes

Romero

Espiña

et al. 2019

Chemistry A European J

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Covalent organic frameworks (COFs) are attractive materials receiving increasing interest in the literature due to their crystallinity, large surface area, and pore uniformity. Their properties can be tailored towards specific applications by judicious design of COF building blocks, giving access to tailor‐made pore sizes and surfaces. In this Concept article, developments in the field of COFs that have allowed these materials to be explored for contaminant adsorption are discussed. Strategies to obtain water‐stable materials with highly ordered structures and large surface areas are reviewed. Post‐synthetic modification approaches, by which pore surfaces can be tuned to target specific contaminants, are described. Recent advances in COF formulations, crucial for future implementation in adsorption devices, are highlighted. At the end, future challenges which need to be addressed to allow for the deployment of COFs for the capture of water contaminants will be discussed.

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“…Water environmental assessment is strictly required in order to keep the quality and efficiently make use of this most valuable asset. Electrochemical sensors are among the analytical tools that could be deployed in the analysis of water pollutants, including heavy metal ions (Cd 2+ , Pb 2+ , Hg 2+ , As 3+ , or Ni 3+ ), surfactants, hydrocarbons and pesticides . They fulfil the requirements of ease of use, sensitive, rapid response, low cost, portability and low power consumption to be applied in different environmental scenarios.…”

Section: Electroanalytical Devices Made With Resorcinol‐formaldehyde mentioning

confidence: 99%

Metal Nanoparticle Carbon Gel Composites in Environmental Water Sensing Applications

Niu

Gich

Roig

et al. 2018

The Chemical Record

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The synthesis of organic-inorganic nanocomposites that can interact with different environmental pollutants and can be mass-produced are very promising materials for the fabrication of chemical sensor devices. Among them, metal (or metal oxide) nanoparticles doped conductive porous carbon composites can be readily applied to the production of electrochemical sensors and show enhanced sensitivity for the measurement of water pollutants, thanks to the abundant accessible and functional sites provided by the interconnected porosity and the metallic nanoparticles, respectively. In this personal account, an overview of several synthesis routes of porous carbon composites containing metallic nanoparticles is given, paying special attention to those based on sol-gel techniques. These are very powerful to synthesize hybrid porous materials that can be easily processed into powders and thin films, so that they can be implemented in electrode fabrication processes based on screen-printing and lithography techniques, respectively. We emphasize the sol-gel routes developed in our group for the synthesis of bismuth or gold nanoparticle doped porous carbon composites applied to fabricate electrochemical sensors that can be scaled down to produce miniaturized on-chip sensing devices for the sensitive detection of heavy metal pollutants in water. The trend towards the miniaturization of electrochemical sensors to be readily employed as analytical tools in environmental monitoring follow the market requirements of rapid and accurate on-site analysis, small sample consumption and waste production, as well as potential for continuous or semi-continuous in-situ determination of a wide variety of target analytes.

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Electrochemical devices for the detection of priority pollutants listed in the EU water framework directive

Cited by 52 publications

References 93 publications

Carbon‐Rich Monolayers on ITO as Highly Sensitive Platforms for Detecting Polycyclic Aromatic Hydrocarbons in Water: The Case of Pyrene

Carbon‐Rich Monolayers on ITO as Highly Sensitive Platforms for Detecting Polycyclic Aromatic Hydrocarbons in Water: The Case of Pyrene

Tailoring Covalent Organic Frameworks To Capture Water Contaminants

Metal Nanoparticle Carbon Gel Composites in Environmental Water Sensing Applications

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