  The Beamline for Advanced diCHroism (BACH) of the Istituto Officina dei
Materiali-Consiglio Nazionale delle Ricerche (IOM-CNR), operating at Elettra
synchrotron in Trieste (Italy), works in the extreme ultra violet (EUV)-soft
X-ray photon energy range with selectable light polarization, high energy
resolution, brilliance and time resolution. The beamline offers a
multi-technique approach for the investigation of the electronic, chemical,
structural, magnetic, and dynamical properties of materials. Recently one of
the three end-stations has been dedicated to experiments based on electron
transfer processes at the solid/liquid interfaces and during photocatalytic or
electrochemical reactions. Suitable cells to perform soft X-ray spectroscopy in
the presence of liquids and reagent gases at ambient pressure were developed.
Here we present two types of static cells working in transmission or in
fluorescence yield, and an electrochemical flow cell which allows to carry out
cyclic voltammetry in situ, electrodeposition on a working electrode (WE) and
to study chemical reactions in-operando conditions. Examples of X-ray
absorption spectroscopy (XAS) measurements performed in ambient conditions and
during electrochemical experiments in liquid are presented.
