Robert H. Byrne

Boric acid dissociation constants (pKB) from spectrophotometrically calibrated electrode measurements made in natural seawater across estuarine to open-ocean conditions

Macarena Martín‐Mayor, Robert H. Byrne

The dissociation constant of boric acid (KB) plays a critical role in marine carbonate system calculations, yet available parameterizations remain limited in salinity coverage and have not been revisited using modern methodology. This dataset combines Dickson (1990)'s data (i.e., D90) in synthetic …

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Total alkalinity measurements in small samples: methods based on CO2 equilibration and spectrophotometric pH

Kalla L. Fleger, Xuewu Liu, William M. Berelson, Jaclyn E.P. Cetiner et autres

Background Total alkalinity (A T ) is a fundamental parameter in understanding the oceanic cycling of carbon dioxide (CO 2 ). Measurements of the A T of natural waters are typically obtained through single- or multi-step titrations using a strong acid, with …

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Spectrophotometric determination of bicarbonate dissociation constants (K2) for freshwater, estuarine, and marine waters over a wide range of temperatures

Macarena Martín‐Mayor, Robert H. Byrne, Katelyn M. Schockman

This study presents the first spectrophotometric determination of K 2 at estuarine conditions (0 ≤ S p ≤ 20; where S p is practical salinity) and over a broad range of temperatures (275.15 ≤ T ≤ 308.15 K; where T is temperature …

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Corrigendum to “Carbonate dissolution fluxes in deep-sea sediments as determined from in situ porewater profiles in a transect across the saturation horizon” [Geochim. Cosmochim. Acta. 390 (2025) 145–159]

Jaclyn E.P. Cetiner, William M. Berelson, Nick E. Rollins, Xuewu Liu et autres

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Organic alkalinity distributions, characteristics, and application to carbonate system calculations in estuarine and coastal systems

Christopher W Hunt, Joseph E. Salisbury, Robert H. Byrne

Abstract The capacity of aquatic systems to buffer acidification depends on the sum contributions of various chemical species to total alkalinity (TA). Major TA contributors are inorganic, with carbonate and bicarbonate considered the most important. However, growing evidence shows that many rivers, …

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Physical–chemical characterization of purified phenol red for spectrophotometric pH measurements in riverine, estuarine, and oceanic waters

Kalla L. Fleger, Robert H. Byrne, Xuewu Liu

• Flash chromatography removes all impurities from commercial phenol red (PR) powder. • PR pH-measurement parameters are obtained for 275 ≤ T ≤ 308 K and 0 ≤ S P ≤ 40. • Simplified derivation for parameter e 1 is applicable to …

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Spectrophotometrically derived seawater CO2‐system assessments: Parameter calculations using pH do not require measurements at standard temperatures

Katelyn M. Schockman, Robert H. Byrne, Brendan Rae Carter, Richard A. Feely

Abstract The temperature range of Earth's open‐ocean waters is roughly 0–30°C, yet our understanding of the seawater carbon dioxide (CO2) system is largely derived from analyses conducted within a narrow temperature range (e.g., laboratory temperature of 20°C or 25°C). Herein, we address …

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Physical–Chemical Characterization of Purified Phenol Red for Spectrophotometric Ph Measurements in Riverine, Estuarine, and Oceanic Waters

Kalla L. Fleger, Robert H. Byrne, Xuewu Liu

Uncertainty sources for measurable ocean carbonate chemistry variables

Brendan Rae Carter, Jonathan D. Sharp, Andrew G. Dickson, Marta Álvarez et autres

Abstract The ocean carbonate system is critical to monitor because it plays a major role in regulating Earth's climate and marine ecosystems. It is monitored using a variety of measurements, and it is commonly understood that all components of seawater carbonate chemistry …

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An assessment of HgII to preserve carbonate system parameters in organic‐rich estuarine waters

Christopher Moore, Robert H. Byrne, Kimberly K. Yates

Abstract This work assesses the effectiveness of sample preservation techniques for measurements of pHT (total scale), total dissolved inorganic carbon (CT), and total alkalinity (AT) in organic‐rich estuarine waters as well as the internal consistency of measurements and calculations (e.g., AT, pHT, …

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A differential titration method for determining the dissociation characteristics of natural organic acids in the coastal zone

Loraine Martell‐Bonet, Robert H. Byrne

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Comment on egusphere-2022-1493

Christopher Moore, Robert H. Byrne, Kimberly K. Yates

Abstract. This work assesses the effectiveness of sample preservation techniques for measurements of pHT (total scale), total dissolved inorganic carbon (DICT), and total alkalinity (AT) in organic-rich estuarine waters. Using HgCl2-treated and untreated water samples, measurements of these carbonate system parameters were …

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