An overview of Structured Biosensors for Metal Ions Determination

Rocha, Diogo L.; Maringolo, Vivian; Araújo, Alberto N.; Amorim, Célia G.; Montenegro, M.C.B.S.M.

doi:10.3390/chemosensors9110324

Cited by 9 publications

(4 citation statements)

References 190 publications

(490 reference statements)

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“…A biosensor is an analytical device that works on the principle that the interaction between the biomolecule (bioreceptor) and the target analyte results in a chemical reaction that produces a signal, such as an electrical current or potential, which is directly proportional to the specific metal in solution [209]. Biosensors are generally easily miniaturized, contributing to the development of in situ and automated procedures.…”

Section: Electrochemical Methods and Biosensors For The Detection Of ...mentioning

confidence: 99%

Advances in Analytical Techniques and Applications in Exploration, Mining, Extraction, and Metallurgical Studies of Rare Earth Elements

Balaram

2023

Minerals

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The use of analytical techniques is important and critical in all areas related to REE, such as basic fundamental research, exploration, mining, extraction, and metallurgical activities at different stages by different industries. At every stage of these activities, rock, ore, minerals, and other related materials have to be analyzed for their REE contents in terms of elemental, isotopic, and mineralogical concentrations using different analytical techniques. Spectacular developments have taken place in the area of analytical instrumentation during the last four decades, with some of them having shrunk in size and become handheld. Among laboratory-based techniques, F-AAS, GF-AAS, ICP-OES, and MP-AES have become very popular. Because of high sensitivity, fewer interference effects, and ease of use, ICP-MS techniques, such as quadrupole ICP-MS, ICP-MS/MS, ICP-TOF-MS, MH-ICP-MS, HR-ICP-MS, and MC-ICP-MS, with both solution nebulization as well as direct solid analysis using laser ablation sample introduction methods, have become more popular for REE analysis. For direct analysis of solids, INAA, XRF, and LIBS techniques, as well as LA-based ICP-MS techniques, are being extensively utilized. The LIBS technique in particular requires little to no sample preparation. TIMS, SIMS, and SHRIMP techniques are being used for isotopic as well as dating REE depots. Portable analytical techniques, such as pXRF, pLIBS, and Raman spectrometers are able to perform in situ analysis even in the field, helping to make fast decisions during exploration studies. At present, hyperspectral remote sensing techniques including handheld, drone, and satellite-based techniques have become very popular in REE exploration studies because of their ability to cover larger areas in a limited time and, thus, became very cost-effective. Deployment of microanalytical devices/sensors mounted in remotely operated vehicles (ROV) is being successfully utilized in detecting REE-rich deposits in the deep oceans. Providing updated in-depth information on all these important aspects with suitable examples, especially from the point of view of REE research studies is the focal point of this review article.

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Section: Electrochemical Methods and Biosensors For The Detection Of ...mentioning

confidence: 99%

Advances in Analytical Techniques and Applications in Exploration, Mining, Extraction, and Metallurgical Studies of Rare Earth Elements

Balaram

2023

Minerals

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“…Heavy metals are pollutants that are highly toxic even at low concentrations, making them a public health concern [ 127 , 128 , 129 ]. Heavy metal monitoring using MFCs has increased in recent years due to the complicated and time-consuming process of traditional monitoring systems [ 130 ]. Although some heavy metals are structural parts of biological materials (manganese, copper, and iron) or part of biological pathways (nickel, zinc, and magnesium), they are still harmful past a certain limit [ 130 ].…”

Section: Sensor Development Using Mets and Hydrogelmentioning

confidence: 99%

“…Heavy metal monitoring using MFCs has increased in recent years due to the complicated and time-consuming process of traditional monitoring systems [ 130 ]. Although some heavy metals are structural parts of biological materials (manganese, copper, and iron) or part of biological pathways (nickel, zinc, and magnesium), they are still harmful past a certain limit [ 130 ]. MFCs have been developed for the detection of a variety of heavy metals including Pb 2+ [ 9 ], Fe 2+ and Mn 2+ [ 131 ], Ni 2+ [ 132 ], Cd 2+ [ 133 ], etc.…”

Section: Sensor Development Using Mets and Hydrogelmentioning

confidence: 99%

Recent Implementations of Hydrogel-Based Microbial Electrochemical Technologies (METs) in Sensing Applications

Wang

Shi

et al. 2023

Sensors

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Hydrogel materials have been used extensively in microbial electrochemical technology (MET) and sensor development due to their high biocompatibility and low toxicity. With an increasing demand for sensors across different sectors, it is crucial to understand the current state within the sectors of hydrogel METs and sensors. Surprisingly, a systematic review examining the application of hydrogel-based METs to sensor technologies has not yet been conducted. This review aimed to identify the current research progress surrounding the incorporation of hydrogels within METs and sensors development, with a specific focus on microbial fuel cells (MFCs) and microbial electrolysis cells (MECs). The manufacturing process/cost, operational performance, analysis accuracy and stability of typical hydrogel materials in METs and sensors were summarised and analysed. The current challenges facing the technology as well as potential direction for future research were also discussed. This review will substantially promote the understanding of hydrogel materials used in METs and benefit the development of electrochemical biosensors using hydrogel-based METs.

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“…If there is a fault during this period, the properties of the sample may be changed and it will no longer be representative of the water body from where it was collected. These laboratory methodologies also require instruments that involve high acquisition and maintenance costs, such as inductively coupled plasma (ICP) [ 26 , 27 ]. Flow injection using colorimetry, for example, with its low-cost maintenance, makes the process less expensive, but the initial investment is significantly high, it has a large form factor, and it cannot be easily carried into the field [ 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

A Portable Measurement Device Based on Phenanthroline Complex for Iron Determination in Water

Fernandes

Tlemçani

Bortoli

et al. 2023

Sensors

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In this work, a newly developed self-contained, portable, and compact iron measurement system (IMS) based on spectroscopy absorption for determination of Fe2+ in water is presented. One of the main goals of the IMS is to operate the device in the field as opposed to instruments commonly used exclusively in the laboratory. In addition, the system has been tuned to quantify iron concentrations in accordance with the values proposed by the regulations for human consumption. The instrument uses the phenanthroline standard method for iron determination in water samples. This device is equipped with an optical sensing system consisting of a light-emitting diode paired with a photodiode to measure absorption radiation through ferroin complex medium. To assess the sensor response, four series of Fe2+ standard samples were prepared with different iron concentrations in various water matrices. Furthermore, a new solid reagent prepared in-house was investigated, which is intended as a “ready-to-use” sample pre-treatment that optimizes work in the field. The IMS showed better analytical performance compared with the state-of-the-art instrument. The sensitivity of the instrument was found to be 2.5 µg Fe2+/L for the measurement range established by the regulations. The linear response of the photodiode was determined for concentrations between 25 and 1000 µg Fe2+/L, making this device suitable for assessing iron in water bodies.

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An overview of Structured Biosensors for Metal Ions Determination

Cited by 9 publications

References 190 publications

Advances in Analytical Techniques and Applications in Exploration, Mining, Extraction, and Metallurgical Studies of Rare Earth Elements

Advances in Analytical Techniques and Applications in Exploration, Mining, Extraction, and Metallurgical Studies of Rare Earth Elements

Recent Implementations of Hydrogel-Based Microbial Electrochemical Technologies (METs) in Sensing Applications

A Portable Measurement Device Based on Phenanthroline Complex for Iron Determination in Water

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