Dear Attila and list members,
the MnCO3- phosphoric acid fractionation factor was determined
experimentally at 25°C by Sharma & Clayton; GCA (1965) and later on revised
by Friedman & OŽNeil ; USGS Prof Pap (1977). The temperature dependence of
the fractionation factor was published in Isot. Env. Health Stud. (1996)
32, 299-305.
Best regards
Michael
*********************************
Dr. Michael E. Böttcher
Department of Biogeochemistry
Max-Planck-Institute for Marine Microbiology
Celsiusstr.1
D-28359 Bremen
Voice: (+49)421-2028-632
Fax: (+49)421-2028-580
*********************************
