The DOI matches its Crossref record.
Determination of ultra‐low oxygen concentrations in oxygen minimum zones by the STOX sensor
Open accessAbstract
The methods used until now have not been able to reliably resolve O 2 concentrations in oceanic oxygen minimum zones below 1–2 µmol L−1. We present a new amperometric sensor for the determination of ultra‐low O 2 concentrations under in situ conditions. The electrochemical STOX O 2 sensor contains a primary sensing cathode and a secondary cathode that, when polarized, prevents entry of O 2 into the sensor. This arrangement enables frequent in situ zero calibration and confers the sensor with a detection limit of 1‐10 nmol L−1 O 2, even during application on a Conductivity‐Temperature‐Depth (CTD) profiler at great water depths. The sensor was used during the Galathea 3 Expedition to demonstrate that the core of the oxygen minimum zone (OMZ) off Peru contained < 2 nM O 2. Application in a reactor on board demonstrated that changes in O 2 concentrations in OMZ water containing < 200 nmol L−1 O 2 could be monitored over periods of hours to days. The linear decrease in O 2 concentration in the reactor indicated very low (< 20 nmol L−1) half saturation constants for the O 2 respiring microbial community.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Declining oxygen in the global ocean and coastal waters
Breitburg, D., Levin, L. A., Oschlies, A., Grégoire, M., Chavez, F. P., Conley, D. J., Garçon, V., Gilbert, D., Gutiérrez, D., Isensee, K., et al. (2018) · Science · doi:10.1126/science.aam7240 · Cited by 3,253
“…of in situ oxygen concentrations ≤ 1 m mol kg − 1 has been improved by the development of STOX (switchable trace amount oxygen) sensors ( 117 ), and novel trace-oxygen optical sensors can now provide precise oxygen quantification in OMZs and detect oxygen concentrations as low as ~5…”
A Cryptic Sulfur Cycle in Oxygen-Minimum–Zone Waters off the Chilean Coast
Canfield, D. E., Stewart, F. J., Thamdrup, B., De Brabandere, L., Dalsgaard, T., Delong, E. F., Revsbech, N. P., & Ulloa, O. (2010) · Science · doi:10.1126/science.1196889 · Cited by 624
Self-citationCANFIELD, D. E., & THAMDRUP, B. (2009) · Geobiology · doi:10.1111/j.1472-4669.2009.00214.x · Cited by 479
Self-citationQuantifying the areal extent and dissolved oxygen concentrations of Archean oxygen oases
Olson, S. L., Kump, L. R., & Kasting, J. F. (2013) · Chemical Geology · doi:10.1016/j.chemgeo.2013.08.012 · Cited by 239
Fox, E. P., Cowley, E. S., Nobile, C. J., Hartooni, N., Newman, D. K., & Johnson, A. D. (2014) · Current Biology · doi:10.1016/j.cub.2014.08.057 · Cited by 207
“albicans Biofilms Create a Hypoxic Microenvironment To test the hypothesis that biofilms create locally hypoxic environments that enable the growth of anaerobic bacteria, we measured oxygen levels in biofilms using a miniaturized, switchable trace oxygen (STOX) sensor, an instrument capable ofmeasuring oxygen concentr…”
Method
Metadata
- Authors
- Revsbech, N. P., Larsen, L. H., Gundersen, J., Dalsgaard, T., Ulloa, O., & Thamdrup, B.
- Venue
- Limnology and Oceanography: Methods
- Publisher
- Wiley
- Published
- 2009-05
- Volume
- 7
- Issue
- 5
- Pages
- 371-381
- ISSN
- 1541-5856 (ISSN-L)
- OpenAlex
- W1523470136
- Cited by
- 268
- References
- 0
- FWCI
- 9.42
- Type
- journal article
- Language
- en
- Open access
- green
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Determination of ultra‐low oxygen concentrations in oxygen minimum zones by the STOX sensor. https://app.cochat.ai/papers/10.4319/lom.2009.7.371
- The paper
- Revsbech, N. P., Larsen, L. H., Gundersen, J., Dalsgaard, T., Ulloa, O., & Thamdrup, B. (2009). Determination of ultra‐low oxygen concentrations in oxygen minimum zones by the STOX sensor. Limnology and Oceanography: Methods. https://doi.org/10.4319/lom.2009.7.371
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
