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Updated: Jul 5, 2025

Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System
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基于循环金属化的发光寿命传感平台,用于检测水样中的 perfluorooctanoic 酸

Kun Zhang1,2, Andrew J Carrod1, Elena Del Giorgio1

  • 1School of Chemistry, University of Birmingham, Birmingham B15 2TT, U.K.

Analytical chemistry
|January 16, 2024
PubMed
概括

一个新的基于的发光传感器以高灵敏度检测到 perfluorooctanoic 酸 (PFOA). 这种在黄金表面固定的新型传感器提供了一种快速而准确的方法来监测水溶液中的PFOA.

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Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
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Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
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