TY  - JOUR
A1  - Grützner, Tobias
A1  - Bureau, Hélène
T1  - Heavy halogen impact on Raman water bands at high pressure: implications for salinity estimations in fluid inclusions
T2  - Chemical Geology
N2  - We present a new experimental dataset on the impact of the heavy halogens chlorine, bromine and iodine on the Raman water bands concerning pressure and their concentration at room temperature. These experiments were conducted at ambient temperature, with variations in halogen concentration and pressure ranging from 0 to 1.4 GPa.
The strength of the Raman water band shift change increases with the ionic size from chlorine, over bromine, to iodine. Our experiments further demonstrate that increased pressure diminishes the impact of the halogen shift change to a varying extent for each of the three halogens. This finding can have significant implications for the salinity calculation of fluid inclusions in minerals such as quartz or olivine. Particularly in the low salinity range, the concentration can be markedly underestimated if the pressure effect is neglected. For experiments in diamond anvil cells involving halogens dissolved in water, the change in Raman water band shifts can serve either as a new tool to monitor pressure, or to monitor the salinity.
KW  - Raman
KW  - Water bands
KW  - Fluid inclusion
KW  - Halogens
KW  - Salinity
KW  - High pressure
Y1  - 2024
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/83523
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-835235
SN  - 0009-2541
VL  - 654
IS  - 122065
PB  - Elsevier
CY  - Amsterdam
ER  -