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Chemistry

Luminescence Quenching Mechanisms in Analytical Fluorometry

Quick fact

Oxygen is one of the most common quenchers in solution, and it can reduce fluorescence intensity by up to 80% even at trace levels, which is why many fluorometric measurements are conducted in deoxygenated environments.

Why this is interesting

You have a fluorescent sample that suddenly glows dimmer than expected. Why? The answer lies in quenching—a silent process that steals the light before it escapes.