Fast Measurement of Dissolved Inorganic Carbon Concentration for Small-Volume Interstitial Water by Acid Extraction and Nondispersive Infrared Gas Analysis
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- NOGUCHI Takuroh
- Center for Advanced Marine Core Research, Kochi University
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- HATTA Mayumi
- Center for Advanced Marine Core Research, Kochi University
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- YAMANAKA Toshiro
- Faculty of Science, Okayama University
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- OKAMURA Kei
- Center for Advanced Marine Core Research, Kochi University
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抄録
We developed a system for measuring the total dissolved inorganic carbon (DIC) concentrations in interstitial water and hydrothermal fluid, which are hard to obtain in large volumes. The system requires a sample volume of only 500 μL, and it takes only 150 s per one sample. The detection limit of this system was estimated to be 66.6 μmol/kg with repeated analysis of CO2-free ultrapure water (n = 9). The precision of this nondispersive infrared (NDIR) system was ±3.1% of the relative standard deviations (2σ) by repeated CRM batch 104 (n = 10). This result is much larger than the required precision for oceanographic studies, but is comparable to a previous result of interstitial water analysis. An on-site trial showed a significant DIC enrichment in interstitial water of hydrothermally altered sediment, and is considered to occur by the mixing of hydrothermal fluid. This procedure will achieve carbon dioxide flux calculations from hydrothermal activities, and will bring a more accurate feature on the global carbon cycle.
収録刊行物
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- Analytical Sciences
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Analytical Sciences 29 (1), 9-13, 2013
社団法人 日本分析化学会
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詳細情報
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- CRID
- 1390001204259276288
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- NII論文ID
- 10031147318
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- NII書誌ID
- AA10500785
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- COI
- 1:STN:280:DC%2BC3s3otFKnsQ%3D%3D
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- ISSN
- 13482246
- 09106340
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- NDL書誌ID
- 024211970
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- PubMed
- 23303077
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可