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Contribution of phytoplankton and bacteria cells to the measured alkalinity of seawater

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Title
Contribution of phytoplankton and bacteria cells to the measured alkalinity of seawater
Other Titles
해수의 측정된 알카리에 대한 phytoplankton and bacteria cells 의 기여도
Authors
Lee, Kitack
Kim, Hyun-cheol
Choi, Wonyong
Keywords
alkalinity; contribution of phytoplankton; unfiltered seawater
Issue Date
2005
Citation
Lee, Kitack, Kim, Hyun-cheol, Choi, Wonyong. 2005. "Contribution of phytoplankton and bacteria cells to the measured alkalinity of seawater". Limnology and Oceanography, 51(1): 331-338.
Abstract
We report the first direct measurements of the contribution of phytoplankton and bacterial cells to the measured alkalinity of unfiltered seawater. Phytoplankton and bacterial cells suspended in seawater make a significant contribution to the measured alkalinity of unfiltered seawater;their contribution is probably next to that of borate ion in most seawater samples. This nonnegligible contribution of particulate organic matter to the measured alkalinity is due largely to the presence of negatively charged surface groups on the phytoplankton and bacterial cells that react with protons during titration with hydrochloric acid. The contribution of organic particles to the measured alkalinity of unfiltered seawater could potentially be an important factor when evaluating the accuracy of presently available carbonate thermodynamic models using at-sea carbon system parameters that include measured alkalinity
URI
http://repository.kopri.re.kr/handle/201206/6590
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