Low-Cost Spectrophotometer for In-Situ Detection of Mercury in Water

González-Morales, David F.; López-Santos, Oswaldo; García‐Beltrán, Olimpo

doi:10.1109/icsens.2018.8589708

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…To test the operation of the developed equipment, an initial test is performed to measure the concentration of the sensor with coumarin, as is done in Reference [50]. A solution with ethanol is used as reference, and 4 solutions with coumarin in 4 known concentrations are tested: 5 µM, 10 µM, 15 µM, and 20 µM.…”

Section: Tests Applied To the Developed Systemmentioning

confidence: 99%

Development of a Low-Cost UV-Vis Spectrophotometer and Its Application for the Detection of Mercuric Ions Assisted by Chemosensors

González-Morales

Valencia

Díaz-Nuñez

et al. 2020

Sensors

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Detection of an environmental contaminant requires the use of expensive measurement equipment, which limits the realization of in situ tests because of their high cost, their limited portability, or the extended time duration of the tests. This paper presents in detail the development of a portable low-cost spectrophotometer which, by using a specialized chemosensor, allows detection of mercuric ions (Hg 2+ ), providing effective and accurate results. Design specifications for all the stages assembling the spectrophotometer and the elements selected to build them are presented along with the process to synthesize the chemosensor and the tests developed to validate its performance in comparison with a high-precision commercial laboratory spectrophotometer.

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Section: Tests Applied To the Developed Systemmentioning

confidence: 99%

Development of a Low-Cost UV-Vis Spectrophotometer and Its Application for the Detection of Mercuric Ions Assisted by Chemosensors

González-Morales

Valencia

Díaz-Nuñez

et al. 2020

Sensors

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“…This prototype was demonstrated for the pH measurement of water. In [ 3 ], the design and implementation of a microcontroller-based spectrophotometer are presented. This was validated for the detection of mercuric ions in water.…”

Section: Introductionmentioning

confidence: 99%

Design Aspects for Portable LED-Based Colorimetric Characterisation Systems Targeting Liquid Analytes

Dupont,

Stoukatch,

Laurent

et al. 2024

Sensors

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Colorimetric characterisation systems based on LEDs and RBG sensors are straightforward to implement, are highly integrable allowing for portable measurement systems and can be constructed using widespread and affordable components. They have already proved to be a satisfactory solution in several applications related to chemical analysis. In this paper, we present an RGB sensor-based prototype for colorimetric characterisation, which can accommodate cuvettes with optical paths of 10 mm and 40 mm. We assessed the impact of experimental condition parameters such as the variability of the analyte volume in the cuvette, as well as the presence of floating particles or deposits at the bottom of the cuvette. While these would not impact the result given by a spectrophotometer that generally has a directional light source, they must be considered in LED/RGB sensor analysers in which the light path is not tightly controlled. We demonstrated that there is a minimal sensor height above the bottom of the cuvette and a minimal analyte level (both depending on the prototype optical path length) above which the analyte volume and the presence of floating particles and deposits have no impact on the prototype output signal. Finally, based on these results, we proposed a test method for a quick dye-displacement assay, in which the reagent is a dye-loaded molecularly imprinted polymer that is poured directly into a cuvette.

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A low-cost device for beer color measurement

Liguori

Pietrosanto

et al. 2019

2019 IEEE International Workshop on Metrology for Agriculture and Forestry (MetroAgriFor)

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Low-Cost Spectrophotometer for In-Situ Detection of Mercury in Water

Cited by 3 publications

References 19 publications

Development of a Low-Cost UV-Vis Spectrophotometer and Its Application for the Detection of Mercuric Ions Assisted by Chemosensors

Development of a Low-Cost UV-Vis Spectrophotometer and Its Application for the Detection of Mercuric Ions Assisted by Chemosensors

Design Aspects for Portable LED-Based Colorimetric Characterisation Systems Targeting Liquid Analytes

A low-cost device for beer color measurement

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