Results 1 to 10 of about 28,173 (303)

Carbazole-Based Colorimetric Anion Sensors [PDF]

open access: yesMolecules, 2021
Owing to their strong carbazole chromophore and fluorophore, as well as to their powerful and convergent hydrogen bond donors, 1,8-diaminocarbazoles are amongst the most attractive and synthetically versatile building blocks for the construction of anion receptors, sensors, and transporters. Aiming to develop carbazole-based colorimetric anion sensors,
Krystyna Maslowska-Jarzyna   +3 more
openaire   +5 more sources

Multiplex Detection of Biogenic Amines for Meat Freshness Monitoring Using Nanoplasmonic Colorimetric Sensor Array [PDF]

open access: yesBiosensors, 2023
Biogenic amines (BAs) were presented as significant markers for the evaluation of the spoilage of meat and meat products. In this work, a colorimetric sensor array was developed for the discrimination and detection of spermine (SP), spermidine (SD ...
Samira Abbasi-Moayed   +2 more
doaj   +2 more sources

MoOx-Based Colorimetric Sensor for Ultraviolet Visualization [PDF]

open access: yesMolecules
Due to the depletion of the global ozone layer and the presence of ozone holes, humans are increasingly exposed to threats from solar ultraviolet radiation. Therefore, researching and developing a highly selective, sensitive, simple, and fast ultraviolet
Zhaokang Zheng   +3 more
doaj   +2 more sources

Deployable Lab-on-a-Chip Sensor for Colorimetric Measurements

open access: yesMicromachines, 2023
The infield measurement of nutrients, heavy metals, and other contaminants in water is still a needed tool in environmental sciences. The Lab-on-a-chip approach can develop deployable instruments that use the standardized analytical assay in a ...
Stefan Gassmann   +2 more
doaj   +2 more sources

Enhancing seafood freshness monitoring: Integrating color change of a food-safe on-package colorimetric sensor with mathematical models, microbiological, and chemical analyses [PDF]

open access: yesCurrent Research in Food Science
The study assessed a developed food-safe on-package label as a real-time spoilage indicator for fish fillets. This colorimetric sensor is sensitive to Total Volatile Base Nitrogen (TVB-N) levels, providing a correct indication of fish freshness and ...
Maryam Ameri   +2 more
doaj   +2 more sources

Colorimetric sensor array for versatile detection and discrimination of model analytes with environmental relevance [PDF]

open access: yesBMC Chemistry
In the current work, a rapid, simple, low-cost, and sensitive smartphone-based colorimetric sensor array coupled with pattern-recognition methods was proposed for the determination and differentiation of some organic and inorganic bases (i.e., OH−, CO3 2−
Mina Adampourezare   +3 more
doaj   +2 more sources

Near-infrared spectroscopy based on colorimetric sensor array coupled with convolutional neural network detecting zearalenone in wheat [PDF]

open access: yesFood Chemistry: X
Wheat is a vital global cereal crop, but its susceptibility to contamination by mycotoxins can render it unusable. This study explored the integration of two novel non-destructive detection methodologies with convolutional neural network (CNN) for the ...
Yongqin Zhao   +3 more
doaj   +2 more sources

Threshold-Responsive Colorimetric Sensing System for the Continuous Monitoring of Gases

open access: yesSensors, 2023
Colorimetric sensors are widely used because of their inherent advantages including accuracy, rapid response, ease-of-use, and low costs; however, they usually lack reusability, which precludes the continuous use of a single sensor.
Manni Mo   +10 more
doaj   +1 more source

Determination of Freshness of Fish by Colorimetric Array Sensor Based on Anodic Aluminum Oxide Flake

open access: yesShipin gongye ke-ji, 2022
In order to quickly and accurately non-destructive real-time monitoring of fish freshness, a visual colorimetric array sensor was constructed in this study based on anodized aluminum flakes as the substrate and 13 indicators selected as gas-sensitive ...
Xiuying LIU   +8 more
doaj   +1 more source

ColoriSens: An open-source and low-cost portable color sensor board for microfluidic integration with wireless communication and fluorescence detection

open access: yesHardwareX, 2022
Microfluidic colorimetric biosensors have shown promising potential for detecting metal cations, anions, organic dyes, drugs, pesticides. As for today, most colorimetric sensors are read by a smartphone or professional optical imaging system, and there ...
Yushen Zhang   +2 more
doaj   +1 more source

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