Carbonate ion concentrations in seawater: Spectrophotometric determination at ambient temperatures and evaluation of propagated calculation uncertainties

Sharp, Jonathan D.; Byrne, Robert H.

doi:10.1016/j.marchem.2018.12.001

Cited by 22 publications

(31 citation statements)

References 52 publications

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“…Recently, a method for accurate [CO 3 2− ] measurement based on spectrophotometry has been developed [124][125][126].…”

Section: Emerging Technologiesmentioning

confidence: 99%

“…The measurement principle is very similar to spectrophotometric pH, and thus should be adaptable for autonomous applications. [CO 3 2− ] is used to calculate the saturation state of calcium carbonate (Ω) and the ability to measure [CO 3 2− ] adds a fifth Bmaster^variable to evaluate the carbonate system [4,125]. This measurement could become a new and exciting tool to monitor ocean acidification [127,128], especially in coastal areas where low saturation state is thought to be the primary driver for deleterious impacts from ocean acidification for organisms such as bivalve larvae [13,129] and pteropods [130].…”

Section: Emerging Technologiesmentioning

confidence: 99%

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Observing Changes in Ocean Carbonate Chemistry: Our Autonomous Future

Bushinsky

Takeshita

Williams

2019

Curr Clim Change Rep

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Purpose of Review We summarize recent progress on autonomous observations of ocean carbonate chemistry and the development of a network of sensors capable of observing carbonate processes at multiple temporal and spatial scales. Recent Findings The development of versatile pH sensors suitable for both deployment on autonomous vehicles and in compact, fixed ecosystem observatories has been a major development in the field. The initial large-scale deployment of profiling floats equipped with these new pH sensors in the Southern Ocean has demonstrated the feasibility of a global autonomous open-ocean carbonate observing system. Summary Our developing network of autonomous carbonate observations is currently targeted at surface ocean CO 2 fluxes and compact ecosystem observatories. New integration of developed sensors on gliders and surface vehicles will increase our coastal and regional observational capability. Most autonomous platforms observe a single carbonate parameter, which leaves us reliant on the use of empirical relationships to constrain the rest of the carbonate system. Sensors now in development promise the ability to observe multiple carbonate system parameters from a range of vehicles in the near future.

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“…Recently, a method for accurate [CO 3 2− ] measurement based on spectrophotometry has been developed [124][125][126].…”

Section: Emerging Technologiesmentioning

confidence: 99%

Section: Emerging Technologiesmentioning

confidence: 99%

Observing Changes in Ocean Carbonate Chemistry: Our Autonomous Future

Bushinsky

Takeshita

Williams

2019

Curr Clim Change Rep

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“…Related to this last point, even considering sea water, carbonates would be present in a concentration of ca. 2 × 10 –6 M , which is considerably lower than the lowest concentrations of anions tested in this work (0.1 × 10 –3 M NaOH and 5 × 10 –3 M NaCl). Therefore, it is expected that any natural carbonate present in solution under working conditions will have a reduced impact on the corrosion detection mechanism of LDH‐hexacyanoferrate.…”

Section: Resultsmentioning

confidence: 60%

Hexacyanoferrate‐Intercalated Layered Double Hydroxides as Nanoadditives for the Detection of Early‐Stage Corrosion of Steel: The Revival of Prussian blue

et al. 2020

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This work describes the synthesis and characterization of Zn‐Al and Mg‐Al layered double hydroxides (LDHs) intercalated with hexacyanoferrate. X‐ray diffraction, infrared spectroscopy and scanning electron microscopy indicated a successful intercalation of hexacyanoferrate in the sub‐micrometer sized platelet‐like particles. Release studies of hexacyanoferrate from LDHs found that the anion is released depending on the concentration of NaCl and under alkaline conditions. When placed in contact with carbon steel under corrosive conditions, the formation of Prussian blue was detected. Furthermore, the application of potentiodynamic polarization and electrochemical impedance spectroscopy revealed that hexacyanoferrate has a detrimental effect on the corrosion of carbon steel, while when intercalated in LDHs this effect is minimized. Overall, these findings open perspectives for the application of these materials as smart nanoadditives in coatings for corrosion detection.

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“…The "four variables" statement in line 360 ignores the increasing reliability of carbonate ion measurements (e.g. Sharp and Byrne, 2019). I suggest to modify this statement accordingly; it is not really necessary to specify "four" or any specific number here at all.…”

Section: Carbonate Ion Measurementsmentioning

confidence: 99%

Review of "GLODAPv2.2020 &#8211; the second update of GLODAPv2"

Humphreys¹

2020

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The new cruise datasets added to GLODAP in this release constitute a substantial update to this already invaluable data product. The manuscript is clearly written and virtually ready to publish as it is. The first section of my comments below raises a few minor issues that the authors should consider before publication of this paper. The second section contains broader suggestions that might benefit future releases, but which are not necessary to include in this version.

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Carbonate ion concentrations in seawater: Spectrophotometric determination at ambient temperatures and evaluation of propagated calculation uncertainties

Cited by 22 publications

References 52 publications

Observing Changes in Ocean Carbonate Chemistry: Our Autonomous Future

Observing Changes in Ocean Carbonate Chemistry: Our Autonomous Future

Hexacyanoferrate‐Intercalated Layered Double Hydroxides as Nanoadditives for the Detection of Early‐Stage Corrosion of Steel: The Revival of Prussian blue

Review of "GLODAPv2.2020 &#8211; the second update of GLODAPv2"

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Carbonate ion concentrations in seawater: Spectrophotometric determination at ambient temperatures and evaluation of propagated calculation uncertainties

Cited by 22 publications

References 52 publications

Observing Changes in Ocean Carbonate Chemistry: Our Autonomous Future

Observing Changes in Ocean Carbonate Chemistry: Our Autonomous Future

Hexacyanoferrate‐Intercalated Layered Double Hydroxides as Nanoadditives for the Detection of Early‐Stage Corrosion of Steel: The Revival of Prussian blue

Review of "GLODAPv2.2020 &amp;#8211; the second update of GLODAPv2"

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Review of "GLODAPv2.2020 – the second update of GLODAPv2"