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Updated: Jun 7, 2025

Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
Transition Metal Ions in Solution: Complexed Ion Speciation at the Air-Liquid Interface
Theis I So Lling1, Martin P Andersson1, Safwat Abdel-Azeim1
1Center for Integrative Petroleum Research, College of Petroleum & Geosciences, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.
Abstract:
We have studied the interfacial properties of Zn2+ vs selected transition metal cations such as Fe2+, Cu2+, and Cr3+ in a water-ethanol mixture using field-induced droplet ionization. This was in particular inspired by the specific surface activity of Zn2+ that has been observed on several occasions and a desire to clarify the root cause for this behavior. We have found that Zn2+, due to its unique electronic configuration and atomic size, is the only ion of those under study that gives rise to specific speciation at the air-liquid interface with three ethanol molecules attached to the central atom for optimal polarity.
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