Related Experiment Video
Updated: Jan 23, 2026

Author Spotlight: Leptospira DNA Detection in Water for Environmental Analysis and Disease Surveillance
Published on: June 14, 2024
Easily synthesized carbon dots for determination of mercury(II) in water samples
Ehsan Yahyazadeh1, Farzaneh Shemirani1
1School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
Abstract:
In this work, a simple thermal method was used to synthesize carbon dots from citric acid and glycine precursors. It was found that Hg(II) ions can selectively quench the fluorescence emission of these carbon dots. Subsequently, a sensor was designed and optimized for the determination of Hg(II) ions. The limit of detection and quantification of the sensor were found to be 38 and 112 ppb, respectively. The sensor showed good selectivity toward Hg(II) ions and was successfully used for the determination of Hg(II) ions in mineral water samples.
Related Concept Videos
The Carbon Cycle
Carbon Skeletons
Dot Product
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...
Water and Mineral Acquisition
Dot Product: Problem Solving
Identify the problem: Start by reading the problem and...
Carbonation Shrinkage
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...

