Aragonite Kinetics in Dilute Solutions
  • 【DOI】

    10.1007/s10498-011-9127-2

  • 【摘要】

    Aragonite was synthesized inorganically using a seeded-growth technique to characterize precipitation kinetics for the heterogeneous growth of solid from dilute solutions (ionic strength: ... 展开>>Aragonite was synthesized inorganically using a seeded-growth technique to characterize precipitation kinetics for the heterogeneous growth of solid from dilute solutions (ionic strength: 0.05–0.07?mol?l?1). The concentration of all aqueous constituents, including Ca (~5–15?mmol?l?1), Na (~10–35?mmol?l?1), Cl (~30–35?mmol?l?1), and carbon (as total alkalinity: ~10 to 17?meq l?1), was held constant by the addition of titrants that contained excess solute concentrations to balance the growth of solid phase during the precipitation reaction, and a CO2/N2 gas mixture (0.009–0.178) was bubbled through each solution to facilitate mass exchange between gaseous and aqueous carbon species. Forty-three experiments were conducted at 10° (n?=?13), 25° (n?=?21), and 40°C (n?=?9), over a range of average saturation states with respect to aragonite from 8.3 to 28.5, 2.9 to 19.6 and 2.0 to 收起<<

  • 【作者】

  • 【刊期】

    Aquatic Geochemistry 2011年4-5期

  • 【语种】

    eng