Development of a deep-sea submersible chemiluminescent analyzer for sensing short-lived reactive chemicals

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Date
2022-02-22
Authors
Taenzer, Lina
Grabb, Kalina C.
Kapit, Jason
Pardis, William A.
Wankel, Scott D.
Hansel, Colleen M.
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DOI
10.3390/s22051709
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Keywords
Superoxide
Chemiluminescence
Deep-sea
Abstract
Based on knowledge of their production pathways, and limited discrete observations, a variety of short-lived chemical species are inferred to play active roles in chemical cycling in the sea. In some cases, these species may exert a disproportionate impact on marine biogeochemical cycles, affecting the redox state of metal and carbon, and influencing the interaction between organisms and their environment. One such short-lived chemical is superoxide, a reactive oxygen species (ROS), which undergoes a wide range of environmentally important reactions. Yet, due to its fleeting existence which precludes traditional shipboard analyses, superoxide concentrations have never been characterized in the deep sea. To this end, we have developed a submersible oceanic chemiluminescent analyzer of reactive intermediate species (SOLARIS) to enable continuous measurements of superoxide at depth. Fluidic pumps on SOLARIS combine seawater for analysis with reagents in a spiral mixing cell, initiating a chemiluminescent reaction that is monitored by a photomultiplier tube. The superoxide in seawater is then related to the quantity of light produced. Initial field deployments of SOLARIS have revealed high-resolution trends in superoxide throughout the water column. SOLARIS presents the opportunity to constrain the distributions of superoxide, and any number of chemiluminescent species in previously unexplored environments.
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© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Taenzer, L., Grabb, K., Kapit, J., Pardis, W., Wankel, S. D., & Hansel, C. M. Development of a deep-sea submersible chemiluminescent analyzer for sensing short-lived reactive chemicals. Sensors, 22(5), (2022): 1709, https://doi.org/10.3390/s22051709.
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Taenzer, L., Grabb, K., Kapit, J., Pardis, W., Wankel, S. D., & Hansel, C. M. (2022). Development of a deep-sea submersible chemiluminescent analyzer for sensing short-lived reactive chemicals. Sensors, 22(5), 1709.
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