The accuracy and limitations of a new meter used to measure aqueous carbon dioxide

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

The accuracy and limitations of a new meter used to measure aqueous carbon dioxide. / Moran, Damian; Tirsgård, Bjørn; Steffensen, John Fleng.

In: Aquacultural Engineering, Vol. 43, No. 3, 01.11.2010, p. 101-107.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Moran, D, Tirsgård, B & Steffensen, JF 2010, 'The accuracy and limitations of a new meter used to measure aqueous carbon dioxide', Aquacultural Engineering, vol. 43, no. 3, pp. 101-107. https://doi.org/10.1016/j.aquaeng.2010.07.003

APA

Moran, D., Tirsgård, B., & Steffensen, J. F. (2010). The accuracy and limitations of a new meter used to measure aqueous carbon dioxide. Aquacultural Engineering, 43(3), 101-107. https://doi.org/10.1016/j.aquaeng.2010.07.003

Vancouver

Moran D, Tirsgård B, Steffensen JF. The accuracy and limitations of a new meter used to measure aqueous carbon dioxide. Aquacultural Engineering. 2010 Nov 1;43(3):101-107. https://doi.org/10.1016/j.aquaeng.2010.07.003

Author

Moran, Damian ; Tirsgård, Bjørn ; Steffensen, John Fleng. / The accuracy and limitations of a new meter used to measure aqueous carbon dioxide. In: Aquacultural Engineering. 2010 ; Vol. 43, No. 3. pp. 101-107.

Bibtex

@article{2d593629d7a84389a298a0ed667ee60d,
title = "The accuracy and limitations of a new meter used to measure aqueous carbon dioxide",
abstract = "The OxyGuard CO(2) Analyzer is a novel meter that can directly measure aqueous CO(2) gas pressure using a water-resistant gas-permeable membrane and infra-red absorption cell. The pCO(2) is converted to a concentration via a solubility factor determined from the calibration procedure and a thermistor. We undertook to independently validate the precision and utility of this meter. Water flow over the probe membrane was a key determinant of the reaction time. At water velocities of >= 30 cm s(-1) the time to 99% span was 6-7 min, while at 0 cm s(-1) it was 55-60 min. Temperature and CO(2(aq)) concentration did not appreciably affect reaction time. The meter had a precision of +/- 0.5 mg L(-1) CO(2(aq)), and high linearity (correlation 0.99-1.01) above 1 mg L(-1) in both freshwater and seawater. The standard meter will not be useful for measuring low concentrations such as atmospheric CO(2) levels, but will be useful in situations where accurate pH and carbonate alkalinity determinations are difficult to obtain, such as saline waters and waters of high organic loadings. (C) 2010 Elsevier B.V. All rights reserved.",
author = "Damian Moran and Bj{\o}rn Tirsg{\aa}rd and Steffensen, {John Fleng}",
year = "2010",
month = nov,
day = "1",
doi = "10.1016/j.aquaeng.2010.07.003",
language = "English",
volume = "43",
pages = "101--107",
journal = "Aquacultural Engineering",
issn = "0144-8609",
publisher = "Elsevier",
number = "3",

}

RIS

TY - JOUR

T1 - The accuracy and limitations of a new meter used to measure aqueous carbon dioxide

AU - Moran, Damian

AU - Tirsgård, Bjørn

AU - Steffensen, John Fleng

PY - 2010/11/1

Y1 - 2010/11/1

N2 - The OxyGuard CO(2) Analyzer is a novel meter that can directly measure aqueous CO(2) gas pressure using a water-resistant gas-permeable membrane and infra-red absorption cell. The pCO(2) is converted to a concentration via a solubility factor determined from the calibration procedure and a thermistor. We undertook to independently validate the precision and utility of this meter. Water flow over the probe membrane was a key determinant of the reaction time. At water velocities of >= 30 cm s(-1) the time to 99% span was 6-7 min, while at 0 cm s(-1) it was 55-60 min. Temperature and CO(2(aq)) concentration did not appreciably affect reaction time. The meter had a precision of +/- 0.5 mg L(-1) CO(2(aq)), and high linearity (correlation 0.99-1.01) above 1 mg L(-1) in both freshwater and seawater. The standard meter will not be useful for measuring low concentrations such as atmospheric CO(2) levels, but will be useful in situations where accurate pH and carbonate alkalinity determinations are difficult to obtain, such as saline waters and waters of high organic loadings. (C) 2010 Elsevier B.V. All rights reserved.

AB - The OxyGuard CO(2) Analyzer is a novel meter that can directly measure aqueous CO(2) gas pressure using a water-resistant gas-permeable membrane and infra-red absorption cell. The pCO(2) is converted to a concentration via a solubility factor determined from the calibration procedure and a thermistor. We undertook to independently validate the precision and utility of this meter. Water flow over the probe membrane was a key determinant of the reaction time. At water velocities of >= 30 cm s(-1) the time to 99% span was 6-7 min, while at 0 cm s(-1) it was 55-60 min. Temperature and CO(2(aq)) concentration did not appreciably affect reaction time. The meter had a precision of +/- 0.5 mg L(-1) CO(2(aq)), and high linearity (correlation 0.99-1.01) above 1 mg L(-1) in both freshwater and seawater. The standard meter will not be useful for measuring low concentrations such as atmospheric CO(2) levels, but will be useful in situations where accurate pH and carbonate alkalinity determinations are difficult to obtain, such as saline waters and waters of high organic loadings. (C) 2010 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.aquaeng.2010.07.003

DO - 10.1016/j.aquaeng.2010.07.003

M3 - Journal article

VL - 43

SP - 101

EP - 107

JO - Aquacultural Engineering

JF - Aquacultural Engineering

SN - 0144-8609

IS - 3

ER -

ID: 34358963