Results 251 to 260 of about 20,809 (282)
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Colorimetric Sensor Technology in Food
2021To objectively evaluate the odor quality, researchers have focused on finding a new way to design an odor sensor with the same performance as the human nose. This CSA array (CSA) technology mimics the mammalian olfactory system by digital imaging to quantify odorant.
Quansheng Chen, Hao Lin, Jiewen Zhao
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Colorimetric metal ion sensors
Tetrahedron, 2011Colorimetric sensors allow on site, real time qualitative, and semi-quantitative detection without complicated analytical instruments. Various aspects, such as different color changes, metal induced absorptions shifts, are reviewed.
Navneet Kaur, Subodh Kumar
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A colorimetric sensor for formalin determination
AIP Conference Proceedings, 2019A colorimetric sensor for determination of formalin using an entrapped acetylacetone sol - gel was investigated namely the sensor was based on the chemical reaction between formalin and entrapped acetylacetone sol - gel yielding a yellow product of 3,5-diacetyl-2,6-dihydrolutidine. The color change can be easily observed by naked-ked eyes.
Saluma Samanman, Surkunai Suding
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Fluorescent and colorimetric sensors for environmental mercury detection
The Analyst, 2015The development of fluorescent and colorimetric sensing strategies for environmental mercury is described.
Guiqiu, Chen +3 more
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Colorimetric Sensor Array for Soft Drink Analysis
Journal of Agricultural and Food Chemistry, 2006Fourteen commercial soft drinks have been analyzed using colorimetric sensor arrays made from a set of 25 chemically responsive dyes printed on a hydrophobic membrane. Digital imaging of the dye array before and after immersion provides a color change profile as a unique fingerprint for each specific analyte.
Chen, Zhang, Kenneth S, Suslick
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Colorimetric and Fluorometric Sensor Arrays
2021The design and construction of colorimetric/fluorometric sensor arrays with high selectivity and sensitivity has been of considerable attention as an emerging technology for mobile chemical detection. Nowadays, many approaches have been made to design sensors, fabricate arrays and generalize their usage areas especially in daily life applications and ...
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A Highly Selective Colorimetric Aqueous Sensor for Mercury
Chemistry – A European Journal, 2008Abstract A new colorimetric mercury sensor is reported based on binding to terpyridine derivatives. It is able to selectively detect Hg II ions over a number of environmentally relevant ions including Ca II , Pb II
Raja, Shunmugam +4 more
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A colorimetric sensor for the selective detection of fluoride ions
Luminescence, 2016AbstractA colorimetric receptor L was prepared. Receptor L can selectively sense F− based on distinct color changes among a series of ions. It can selectively sense F− through an intramolecular hydrogen bond interaction. A Job plot indicated a 1:1 complexation stoichiometry between receptor L and F−.
Chin-Feng, Wan +2 more
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A novel colorimetric HSO4− sensor in aqueous media
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2012A novel and sensitive anion receptor 3, bearing Schiff base structure, nitrophenyl azobenzol and carboxyl groups, was developed and characterized as a single chemosensor for the recognition of HSO(4)(-) anion. The different responses of UV-vis spectra and color changes of 3 could be applied to the recognition for HSO(4)(-) over other anions such as F(-)
Ping, Li +4 more
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