A Novel Lab-on-Chip Spectrophotometric pH Sensor for Autonomous In Situ Seawater Measurements to 6000 m Depth on Stationary and Moving Observing Platforms

We report a new, autonomous Lab-on-Chip (LOC) microfluidic pH sensor with a 6000 m depth capability, ten times the depth capability of the state of the art autonomous spectrophotometric sensor. The pH is determined spectrophotometrically using purified meta-Cresol Purple indicator dye offering high...

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Bibliographic Details
Published in:Environmental science & technology 2021-11, Vol.55 (21), p.14968-14978
Main Authors: Yin, Tianya, Papadimitriou, Stathys, Rérolle, Victoire M.C, Arundell, Martin, Cardwell, Christopher L, Walk, John, Palmer, Martin R, Fowell, Sara E, Schaap, Allison, Mowlem, Matthew C, Loucaides, Socratis
Format: Article
Language:English
Subjects:
Biogeochemical Cycling
Chemical analysis
Coastal waters
Cresols
Lab-on-a-chip
Marine ecosystems
Microfluidics
pH effects
pH sensors
Platforms
Reagents
Seawater
Sensors
Spectrophotometry
Water analysis
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Description
Summary:We report a new, autonomous Lab-on-Chip (LOC) microfluidic pH sensor with a 6000 m depth capability, ten times the depth capability of the state of the art autonomous spectrophotometric sensor. The pH is determined spectrophotometrically using purified meta-Cresol Purple indicator dye offering high precision (
ISSN:0013-936X
1520-5851
DOI:10.1021/acs.est.1c03517