High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf Seas
Increasing atmospheric CO2 concentrations are resulting in a reduction in seawater pH, with potential detrimental consequences for marine organisms. Improved efforts are required to monitor the anthropogenically driven pH decrease in the context of natural pH variations. We present here a high resol...
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| Format: | Article |
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MDPI AG
2018-08-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/8/2622 |
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| author | Victoire M. C. Rérolle Eric P. Achterberg Mariana Ribas-Ribas Vassilis Kitidis Ian Brown Dorothee C. E. Bakker Gareth A. Lee Matthew C. Mowlem |
| author_facet | Victoire M. C. Rérolle Eric P. Achterberg Mariana Ribas-Ribas Vassilis Kitidis Ian Brown Dorothee C. E. Bakker Gareth A. Lee Matthew C. Mowlem |
| author_sort | Victoire M. C. Rérolle |
| collection | DOAJ |
| description | Increasing atmospheric CO2 concentrations are resulting in a reduction in seawater pH, with potential detrimental consequences for marine organisms. Improved efforts are required to monitor the anthropogenically driven pH decrease in the context of natural pH variations. We present here a high resolution surface water pH data set obtained in summer 2011 in North West European Shelf Seas. The aim of our paper is to demonstrate the successful deployment of the pH sensor, and discuss the carbonate chemistry dynamics of surface waters of Northwest European Shelf Seas using pH and ancillary data. The pH measurements were undertaken using spectrophotometry with a Lab-on-Chip pH sensor connected to the underway seawater supply of the ship. The main processes controlling the pH distribution along the ship’s transect, and their relative importance, were determined using a statistical approach. The pH sensor allowed 10 measurements h−1 with a precision of 0.001 pH units and a good agreement with pH calculated from a pair of discretely sampled carbonate variables dissolved inorganic carbon (DIC), total alkalinity (TA) and partial pressure of CO2 (pCO2) (e.g., pHDICpCO2). For this summer cruise, the biological activity formed the main control on the pH distribution along the cruise transect. This study highlights the importance of high quality and high resolution pH measurements for the assessment of carbonate chemistry dynamics in marine waters. |
| first_indexed | 2024-04-11T22:50:55Z |
| format | Article |
| id | doaj.art-a7f09cdb0efd44a386da00fad8284119 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:50:55Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a7f09cdb0efd44a386da00fad82841192022-12-22T03:58:35ZengMDPI AGSensors1424-82202018-08-01188262210.3390/s18082622s18082622High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf SeasVictoire M. C. Rérolle0Eric P. Achterberg1Mariana Ribas-Ribas2Vassilis Kitidis3Ian Brown4Dorothee C. E. Bakker5Gareth A. Lee6Matthew C. Mowlem7National Oceanography Centre, Southampton, University of Southampton, Southampton SO14 3ZH, UKNational Oceanography Centre, Southampton, University of Southampton, Southampton SO14 3ZH, UKNational Oceanography Centre, Southampton, University of Southampton, Southampton SO14 3ZH, UKPlymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, UKPlymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, UKCentre of Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UKCentre of Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UKNational Oceanography Centre, Southampton SO14 3ZH, UKIncreasing atmospheric CO2 concentrations are resulting in a reduction in seawater pH, with potential detrimental consequences for marine organisms. Improved efforts are required to monitor the anthropogenically driven pH decrease in the context of natural pH variations. We present here a high resolution surface water pH data set obtained in summer 2011 in North West European Shelf Seas. The aim of our paper is to demonstrate the successful deployment of the pH sensor, and discuss the carbonate chemistry dynamics of surface waters of Northwest European Shelf Seas using pH and ancillary data. The pH measurements were undertaken using spectrophotometry with a Lab-on-Chip pH sensor connected to the underway seawater supply of the ship. The main processes controlling the pH distribution along the ship’s transect, and their relative importance, were determined using a statistical approach. The pH sensor allowed 10 measurements h−1 with a precision of 0.001 pH units and a good agreement with pH calculated from a pair of discretely sampled carbonate variables dissolved inorganic carbon (DIC), total alkalinity (TA) and partial pressure of CO2 (pCO2) (e.g., pHDICpCO2). For this summer cruise, the biological activity formed the main control on the pH distribution along the cruise transect. This study highlights the importance of high quality and high resolution pH measurements for the assessment of carbonate chemistry dynamics in marine waters.http://www.mdpi.com/1424-8220/18/8/2622seawater pHlab-on-chipLOCspectrophotometrymicrofluidicsEuropean shelf seashigh resolution pH measurements |
| spellingShingle | Victoire M. C. Rérolle Eric P. Achterberg Mariana Ribas-Ribas Vassilis Kitidis Ian Brown Dorothee C. E. Bakker Gareth A. Lee Matthew C. Mowlem High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf Seas Sensors seawater pH lab-on-chip LOC spectrophotometry microfluidics European shelf seas high resolution pH measurements |
| title | High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf Seas |
| title_full | High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf Seas |
| title_fullStr | High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf Seas |
| title_full_unstemmed | High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf Seas |
| title_short | High Resolution pH Measurements Using a Lab-on-Chip Sensor in Surface Waters of Northwest European Shelf Seas |
| title_sort | high resolution ph measurements using a lab on chip sensor in surface waters of northwest european shelf seas |
| topic | seawater pH lab-on-chip LOC spectrophotometry microfluidics European shelf seas high resolution pH measurements |
| url | http://www.mdpi.com/1424-8220/18/8/2622 |
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