2018
DOI: 10.1016/j.gca.2018.06.018
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Barium partitioning in calcite and aragonite as a function of growth rate

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Cited by 59 publications
(51 citation statements)
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“…This effect was explained previously by coupled substitution of Ca in calcite due to the differences in ion radii of Mg, Ca, Sr, Ba (r Mg <r Ca <r Sr <r Ba ), where the distortion of crystal lattice due to incorporation of small Mg (relative to Ca) is compensated by involvement of large Sr (e.g., Mucci and Morse, 1983). This explanation is consistent with our data where deviation of K Ba (Ba is the largest cation) from the literature data is stronger than of K Sr : K Ba of Mg-bearing calcite is two orders of magnitude higher than K Ba of Mg-free calcite precipitated at similar rates (10 −4 -10 −3 nm/s) whereas our K Sr is higher than literature values by one order of magnitude (Lorens, 1981;Tesoriero and Pankow, 1996;Mavromatis et al, 2018). Sr incorporation into Mg-bearing calcite demonstrates much lower dependence on growth rate in comparison to Sr in low-Mg or Mg-free calcite, which corroborate the dominance of substitution of Ca with Mg and Sr over the growth rate of Mg-bearing calcite.…”
Section: Discussionsupporting
confidence: 92%
See 1 more Smart Citation
“…This effect was explained previously by coupled substitution of Ca in calcite due to the differences in ion radii of Mg, Ca, Sr, Ba (r Mg <r Ca <r Sr <r Ba ), where the distortion of crystal lattice due to incorporation of small Mg (relative to Ca) is compensated by involvement of large Sr (e.g., Mucci and Morse, 1983). This explanation is consistent with our data where deviation of K Ba (Ba is the largest cation) from the literature data is stronger than of K Sr : K Ba of Mg-bearing calcite is two orders of magnitude higher than K Ba of Mg-free calcite precipitated at similar rates (10 −4 -10 −3 nm/s) whereas our K Sr is higher than literature values by one order of magnitude (Lorens, 1981;Tesoriero and Pankow, 1996;Mavromatis et al, 2018). Sr incorporation into Mg-bearing calcite demonstrates much lower dependence on growth rate in comparison to Sr in low-Mg or Mg-free calcite, which corroborate the dominance of substitution of Ca with Mg and Sr over the growth rate of Mg-bearing calcite.…”
Section: Discussionsupporting
confidence: 92%
“…Bulk precipitation experiments of calcite also found strong growth rate effect on Sr, Ba, and B uptake (e.g., Tesoriero and Pankow, 1996;Uchikawa et al, 2015;Mavromatis et al, 2018). In our study, growth rate can potentially control B, Sr, and Ba uptake because decrease in with experimental duration should cause a decrease in growth rate (e.g., Zhong and Mucci, 1989) however, this was not confirmed by the growths rate calculated from LA-ICP-MS depth profiles.…”
Section: Discussioncontrasting
confidence: 64%
“…It shows that these reported distribution coefficients are generally low, suggesting the difficulty in integrating Ba into CaCO 3 lattice. For instance, a number of studies report distribution coefficient values of 0.1 to 1, which are similar to the value obtained in this study (Mavromatis et al, 2018;Tesoriero and Pankow, 1996). D Ba values lower than 0.1 were also reported previously (Yoshida et al, 2008).…”
Section: Co-precipitation Of Carbonate Scales On the Surface Of Tube supporting
confidence: 91%
“…It is reported that Ba 2+ species is about 50% larger than that of Ca 2+ species (Wang and Xu, 2001). Although the integration of Ba 2+ into CaCO 3 crystal would be difficult, a number of studies show that a fraction of the aqueous Ba species can actually partition into the CaCO 3 crystals (Mavromatis et al, 2018;Tesoriero and Pankow, 1996;Yoshida et al, 2008). These research findings and the comparison with the finding of this study will be discussed below.…”
Section: Caco 3 /Baco 3 Co-precipitation In Beaker Testsupporting
confidence: 68%
“…Inorganic anions (e.g., PO 4 3− and SO 4 2− ) exert the impacts by competing with CO 3 2− for Ca 2+ sites or incorporating in a crystal lattice [13]. Divalent metal cations, such as Mg 2+ , Ba 2+ and Sr 2+ , inhibit calcite growth by step pining, incorporation or kink blocking [18][19][20][21]. Similarly, soluble organic molecules (such as humate, fulvate, citrate and polyfunctional aromatic acids) inhibit the precipitation of aragonite by the modification of functional groups in these additives [11,22,23].…”
Section: Introductionmentioning
confidence: 99%