A theoretical study of the kinetics of the boric acid–borate equilibrium in seawater

Zeebe, Richard E.; Sanyal, Abhijit; Ortiz, Joseph D.; Wolf-Gladrow, Dieter

doi:10.1016/s0304-4203(00)00100-6

Cited by 280 publications

(367 citation statements)

References 28 publications

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“…A complete explanation of the carbonate system in seawater cannot be provided here, and the reader is referred to the thorough descriptions in Zeebe and Wolf-Gladrow [2001]. Instead, this section presents the basics of how increasing carbon dioxide concentrations in the atmosphere are causing changes in the carbonate system that ultimately affect calcification rates on coral reefs.…”

Section: The Carbonate System In Seawatermentioning

confidence: 99%

Coral reefs and changing seawater carbonate chemistry

Kleypas¹,

Langdon²

2006

Coral Reefs and Climate Change: Science and Management

147

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Seawater carbonate chemistry of the mixed layer of the oceans is changing rapidly in response to increases in atmospheric CO 2 . The formation and dissolution of calcium carbonate is now known to be strongly affected by these changes, but many questions remain about other controls on biocalcification and inorganic cementation that confound our attempts to make accurate predictions about the effects on both coral reef organisms and reefs themselves. This chapter overviews the current knowledge of the relationship between seawater carbonate chemistry and coral reef calcification, identifies the hurdles in our understanding of the two, and presents a strategy for overcoming those hurdles.

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Section: The Carbonate System In Seawatermentioning

confidence: 99%

Coral reefs and changing seawater carbonate chemistry

Kleypas¹,

Langdon²

2006

Coral Reefs and Climate Change: Science and Management

147

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“…To convert our data to the natu-228 ral seawater scale we applied the following equa-229 tion (Zeebe and Wolf-Gladrow, 2001):…”

Section: Article In Pressmentioning

confidence: 99%

“…Comparison of the boron isotopic composition of the 2 symbiont-bearing foraminifera Orbulina universa and the 3 symbiont-barren Globigerina bulloides (¢lled circles) taken 4 from plankton tows and inorganic carbonates (open circles 5 and solid line; Sanyal et al, 2000). As the inorganic carbon-6 ate was also precipitated in arti¢cial seawater, the N 11 B val-7 ues of Sanyal et al (2000) were converted to the natural sea-8 water scale according to Zeebe and Wolf-Gladrow (2001, The N 11 B of symbiont-barren Globigerina bul-373 loides (19.0 þ 0.9x) was 1.4x lower than that 374 of the Orbulina universa shells collected from the 375 same plankton tows. Because this is the ¢rst N 11 B 376 datum ever measured on a symbiont-barren spe-377 cies, it cannot be compared to literature data.…”

Section: B Ho «Nisch Et Al / Marine Micropaleontology 928 (2003) 1^10mentioning

confidence: 99%

The influence of symbiont photosynthesis on the boron isotopic composition of foraminifera shells

Hönisch

Biȷma

Russell

et al. 2003

Marine Micropaleontology

122

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11 12Culture experiments were carried out with the planktonic foraminifer Orbulina universa under high and low light 13 levels in order to determine the influence of symbiont photosynthetic activity on the boron isotopic composition of 14 shell calcite. Under low light (reduced photosynthetic rates) the boron isotopic composition of the tests is 1.5x lower 15 compared to shells grown under high light (elevated photosynthetic rates). In terms of inferred pH, the lower boron 16 isotope values correspond to a reduction in pH of approximately 0.2 units. The boron isotopic composition of 17 Orbulina universa from plankton tows is similar to that of shells grown under low light conditions in the laboratory. 18 These data are consistent with reduced symbiont concentrations in recently secreted shells. In addition to laboratory 19 and field grown O. universa, we present the first data for a symbiont-barren foraminifer, Globigerina bulloides. Data 20 obtained for G. bulloides fall V1.4x below those of the field grown O. universa. Although the plankton tow results 21 are preliminary, they support the hypothesis that respiration and photosynthesis are the key physiological parameters 22 responsible for species-specific vital effects. , 1996Spivack et al., 1993).

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“…Henry's law assumes that the higher the partial pressure (p) of a gas over a liquid, the greater its solubility, and the higher the temperature, the lower its solubility in water [21,22]. The solubility of CaCO 3 is dependent on the partial pressure of CO 2 and solution temperature.…”

Section: Discussionmentioning

confidence: 99%

Thermally Sprayed Aluminum Coatings for the Protection of Subsea Risers and Pipelines Carrying Hot Fluids

Cé

Paul

2016

Coatings

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This paper reports the effect of boiling synthetic seawater on the performance of damaged Thermally Sprayed Aluminum (TSA) on carbon steel. Small defects (4% of the sample's geometric surface area) were drilled, exposing the steel, and the performance of the coating was analyzed for corrosion potential for different exposure times (2 h, 335 h, and 5000 h). The samples were monitored using linear polarization resistance (LPR) in order to obtain their corrosion rate. Scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) were used for post-test characterization. The results showed that a protective layer of Mg(OH) 2 formed in the damaged area, which protected the underlying steel. Additionally, no coating detachment from the steel near the defect region was observed. The corrosion rate was found to be 0.010-0.015 mm/year after 5000 h in boiling synthetic seawater.

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A theoretical study of the kinetics of the boric acid–borate equilibrium in seawater

Cited by 280 publications

References 28 publications

Coral reefs and changing seawater carbonate chemistry

Coral reefs and changing seawater carbonate chemistry

The influence of symbiont photosynthesis on the boron isotopic composition of foraminifera shells

Thermally Sprayed Aluminum Coatings for the Protection of Subsea Risers and Pipelines Carrying Hot Fluids

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