Kinetic fractionation of carbon-13 during calcium carbonate precipitation

Details Kinetic fractionation of carbon-13 during calcium carbonate precipitation Kinetic fractionation of carbon-13 during calcium carbonate precipitation

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46.1183t&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 46, Issue 7, pp.1183-1191

Physics

30

Scientific paper

Kinetic isotope fractionation of 13 C during precipitation of CaCO 3 under open system conditions has been investigated. The isotope enrichment factor HCO 3 - - CaCO 3 varies between -0.35 ± 0.23 and -3.37 ± 0.36%. at 25°C depending on the rate of precipitation and mineralogy, the enrichment of 13 C in the solid carbonate phase decreasing with increasing precipitation rate. An estimate of equilibrium HCO 3 - Calcite of between -1.83 ± 0.32 and -2.26 ± 0.31%. is calculated from slow precipitation runs. A surface diffusion crystal growth model is used to describe the combination of kinetic isotope effects on thermodynamic isotope fractionation during rapid diffusion controlled crystal growth. Under slow precipitation conditions Calcite - Aragonite was estimated as -1.4%.; however, during rapid precipitation this fractionation appears to diminish and aragonite becomes less enriched in 13 C.

Affiliated with

Also associated with

No associations

Rating

Kinetic fractionation of carbon-13 during calcium carbonate precipitation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Kinetic fractionation of carbon-13 during calcium carbonate precipitation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kinetic fractionation of carbon-13 during calcium carbonate precipitation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1023230