AESEC (Atomic Emission SpectroElectroChemistry) is a technique that combines atomic emission spectroscopy (AES) with a plasma optical emission spectrometer to study material processes at the interface of materials and electrolytes, typically under controlled electrochemical conditions. It is particularly useful in the field of corrosion science, electrochemical surface processes, and material degradation.
AESEC can provide both the electrochemical response of the material dissolution, passivation, or other processes, and the chemical species released in real-time.
Benefits of AESEC:
- Real-time measurements: Provides dynamic insights into surface reactions as they occur, with minimal disruption
- Element-specific analysis: Tracks specific ions or species released during reactions.
- Coupling data: Simultaneously collects chemical and electrochemical information for a more detailed understanding.
Key Applications:
- Corrosion studies: Investigating the rate of metal dissolution, formation of passive films, and localized corrosion processes to help the development of corrosion resistant materials.
- Material degradation: Understanding how materials degrade under specific simulated conditions.
- Battery research: Monitoring electrode dissolution or degradation in real time.
- Surface chemistry: Characterizing the reactions occurring on surfaces made of metal, alloy, ceramics and glass.

Figure 1: AESEC principle illustration (click to enlarge)
Courtesy of Ogle, K. (2019). Atomic Emission Spectroelectrochemistry: Real-Time Rate Measurements of Dissolution, Corrosion, and Passivation. CORROSION, 75(12), 1398–1419. https://doi.org/10.5006/3336
The AESEC option for ICP-OES requires an Ultima Expert instrument equipped with a polychromator.