Iron (III) determination in bioethanol fuel using a smartphone-based device

João, Afonso Filipe; Squissato, André L.; Fernandes, Gabriel Martins; Cardoso, Rafael M.; Batista, Alex D.; Muñoz, Rodrigo A.A.

doi:10.1016/j.microc.2019.02.053

Cited by 37 publications

(19 citation statements)

References 41 publications

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“…The light signaling sent from the device by connected to the smartphone device calibration was stable. The method was found to be accurate and precise because recovery of color intensity was high compared with optimal values of color stability in the studies about colorimetric determination of streptomycin with the help of anthocyanin dye and iron (III) in bioethanol fuel via smartphone [34,35]. A previous study investigated the desirable odor healing of chicken oil after lipoxygenase treatment by the techniques of gas chromatography and sensory evaluation.…”

Section: Resultsmentioning

confidence: 99%

Fragrance Component Analysis for Nebulvapours of European Anchovy Oils by Using Colorimetric Printing and Electronic Nose

Eyüpoğlu

2020

International Journal of Secondary Metabolite

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Analysis of odor components about biochemicals find the wide space in the evaluation of flavor parameters and anchovies as biological materials. Food dye solutions as printer's inks were sprayed on to the fabric throughout the printing operation and skin oil vapors of anchovy were simultaneously sent to the paper hopper of printer intensely via a nebulizer device. Before and after dyeing process, images of tela fabric were taken by smartphone and analyzed by software in the smartphone for the purpose of determination of colorimetric fragrance component concentrations and visual odor profile in range of visible region. The ten major ingredient contents (with relative percentages) (aldehyde compounds intensely such as 2,4-heptadienal (23%), (E,E)-2,4-nonadienal (17%)) of anchovy skin essential oils were determined. For colorimetric printing analysis via smartphone, LOD and LOQ were 1 ppm and 3 ppm, respectively. Methodology can be used in the analysis of toxic components that interact with foods.

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Section: Resultsmentioning

confidence: 99%

Fragrance Component Analysis for Nebulvapours of European Anchovy Oils by Using Colorimetric Printing and Electronic Nose

Eyüpoğlu

2020

International Journal of Secondary Metabolite

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“…By evaluating the works that used smartphones for image acquisition and performed the external processing of the acquired data (Figure 1), we can see that these devices are explored in several areas, such as the detection of diseases and markers of diseases causing in the medical field, immunoassay, 18–27 quality control of the environment, 28–39 forensic analysis, 40–42 control and quality of beverages and food, 15,43–64 quality evaluation of pharmaceutical products, 54,65,66 fuel quality control, 67,68 pigments, 69 chemical education, kinetic studies, and chemical receptors 70–77 …”

Section: Introductionmentioning

confidence: 99%

PhotoMetrix and colorimetric image analysis using smartphones

Böck

Helfer

Costa

et al. 2020

Journal of Chemometrics

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The steady advances in technology employed in smartphones, coupled with the high availability and the ease access to these devices, increased the interest in applying it to analytical purposes. The main goal is to develop simple, fast, and low-cost analytical methods, generating immediate results. Different analytical strategies using smartphones have been proposed to identify or determine different analytes in a wide range of matrices. Some of them use the smartphone to capture the images, to process them, and to provide the analytical results. Others use this device just for image acquisition. In this context, this review aimed to relate previous works that used smartphones to acquire images for analytical purposes, with a special focus on PhotoMetrix application, which is a tool for chemical analysis. This application allows the decomposition of digital images acquired by smartphone cameras and to process them within the same device, allowing in situ chemical analysis.

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“…For example, test strips have been combined with a smartphone to quantify bacteria in food [2]. There are various smartphone-based systems for detecting food and water contaminants, including heavy metals [3,4], microorganisms and parasites [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…The analysis of substances by a smartphone is based mainly on colorimetric [3,4], fluorescent [7], luminescent [6] and electrochemical [8] methods (Table 1). Smartphone-based assays are already used in healthcare, food control [9,10] and environmental protection [11].…”

Section: Introductionmentioning

confidence: 99%

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Estimation of photocatalytic degradation rate using smartphone based analysis

Danyliuk

Tatarchuk

Shyichuk

2020

Phys. Chem. Solid St.

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A simple approach to test photocatalyst activity has been described. Photocatalytic degradation of a model dye was measured using a smartphone. The color changes were registered directly in the micro-photoreactor. The model dye Rhodamine B was degraded under UV irradiation (365 nm). The effect of H2O2 concentration and titanium dioxide photocatalyst dosage has been studied. Among three color systems, RGB, CIE L*a*b* and HSV, the first one proved to be the most suitable for the dye determination. The reference measurements were carried out with a UV-Vis spectrophotometer. Two smartphones and two tablets with different camera resolutions have been examined. The best calibration curve was obtained using a Samsung Galaxy A6 smartphone with a 16MP camera. The t-test has shown with 95 % confidence that there are no significant differences between the dye concentrations measured with the smartphone and spectrophotometer. The values of the relative standard deviation of the smartphone measurements were less than 0.5 %. Therefore, the proposed method for fast estimation of photocatalyst activity can be used in the control of advanced oxidation reactions.

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Iron (III) determination in bioethanol fuel using a smartphone-based device

Cited by 37 publications

References 41 publications

Fragrance Component Analysis for Nebulvapours of European Anchovy Oils by Using Colorimetric Printing and Electronic Nose

Fragrance Component Analysis for Nebulvapours of European Anchovy Oils by Using Colorimetric Printing and Electronic Nose

PhotoMetrix and colorimetric image analysis using smartphones

Estimation of photocatalytic degradation rate using smartphone based analysis

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