And between the subducting slab and aqueous fluid?

I am a graduate student and am interested in modeling subduction zone and near subduction zone processes. As part of my modeling, I need distribution coefficients between subducting sediment and an aqueous fluid and between the subducting slab and aqueous fluid. I have looked at Johnson and Plank 1999 and Spandler et al 2006 for sediments and Kessel 2005 for the subducted slab, which seem to work well, but I would like to fill in a few more elements if possible and have a chance to compare distribution coefficients a bit more. I’ve found a lot of work on individual minerals, especially for subducting sediment, but not as much for bulk sediment. Has anyone done work on this or used other’s distribution coefficients for this work before? If you have any suggestions or hints, I would greatly appreciate it.