Total molybdate reactive and unreactive phosphorus concentrations from sediment extracts from sediment samples collected during cruises in the Arctic Ocean, California Margin, and Equatorial Pacific from 1992-1998 (NCEI Accession 0278771)
This dataset contains chemical data collected on R/V Thomas G. Thompson, R/V Wecoma, and USCGC Polar Sea during cruises P194AR, TT013, and W9807A from 1992-10-30 to 1998-07-24. These data include reactive phosphorus (PO4). The instruments used to collect these data include Flow Injection Analyzer. These data were collected by Adina Paytan and Dr Delphine Defforey of University of California-Santa Cruz as part of the "A new marine sediment sample preparation scheme for solution 31P NMR analysis (Marine Sediment Analysis 31P NMR)" project and "Center for Dark Energy Biosphere Investigations (C-DEBI)" program. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-07-02.
The following is the text of the dataset description provided by BCO-DMO:
Dataset Description: Total molybdate reactive and unreactive phosphorus concentrations from sediment extracts from sediment samples collected during cruises in the Arctic Ocean, California Margin, and Equatorial Pacific from 1992-1998.
These data were published in Defforey et al. (2017). See the related-resource page https://www.bco-dmo.org/related-resource/794727 for other datasets related to this publication.
Sediment sample information for this dataset is available as a supplemental document (Sediment_Sample_Info.csv) which contains collection date, water depth, sediment depth, latitude, and longitude.
Additional award information:
* NSF C-DEBI subaward # 156246 to Adina Paytan * NSF C-DEBI subaward # 157598 to Delphine Defforey
The following is the text of the dataset description provided by BCO-DMO:
Dataset Description: Total molybdate reactive and unreactive phosphorus concentrations from sediment extracts from sediment samples collected during cruises in the Arctic Ocean, California Margin, and Equatorial Pacific from 1992-1998.
These data were published in Defforey et al. (2017). See the related-resource page https://www.bco-dmo.org/related-resource/794727 for other datasets related to this publication.
Sediment sample information for this dataset is available as a supplemental document (Sediment_Sample_Info.csv) which contains collection date, water depth, sediment depth, latitude, and longitude.
Additional award information:
* NSF C-DEBI subaward # 156246 to Adina Paytan * NSF C-DEBI subaward # 157598 to Delphine Defforey
Dataset Citation
- Cite as: Paytan, Adina; Defforey, Delphine (2023). Total molybdate reactive and unreactive phosphorus concentrations from sediment extracts from sediment samples collected during cruises in the Arctic Ocean, California Margin, and Equatorial Pacific from 1992-1998 (NCEI Accession 0278771). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278771. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:0278771
Download Data |
|
Distribution Formats |
|
Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 1992-10-30 to 1998-07-24 |
Spatial Bounding Box Coordinates |
West: -174.967
East: -125.017
South: -12
North: 84.083
|
Spatial Coverage Map |
General Documentation |
|
Associated Resources |
|
Publication Dates |
|
Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information | Acquisition Description: Locations: Arctic Ocean: P-1-94-AR P21, 84°5' N, 174°58' W California margin: W-2-98-NC TF1, 41°5' N, 125°1' W Equatorial Pacific: TT013-06MC, 12°00' S, 134°56' W Methodology: We used the ignition method to determine total P and molybdate-reactive P concentrations (MRP, which includes primarily free orthophosphate) for each sediment sample used for this study. Samples for total P analyses were ashed in crucibles at 550oC for 2 h and then extracted in 25 mL of 0.5 M sulfuric acid for 16 h. Samples for MRP analyses were extracted in the same manner, without the ashing step (Olsen and Sommers 1982; Cade-Menun and Lavkulich 1997). We derived molybdate-unreactive P concentrations (MUP, which includes primarily organic P and polyphosphates) in supernatants by subtracting MRP from total P concentrations. For ashed and unashed extracts, MRP was determined as described below. Total P concentrations in sediment extracts were measured using inductively coupled plasma optical emission spectroscopy (ICP-OES). Standards were prepared with the same solutions as those used for the extraction procedure in order to minimize matrix effects on P measurements. Sediment extracts and standards (0 μM, 3.2 μM, 32 μM and 320 μM) were diluted to lower salt content to prevent salt buildup on the nebulizer. Concentration data from both wavelengths (213 nm and 214 nm) were averaged to obtain extract concentrations for each sample. The detection limit for P on this instrument for both wavelengths is 0.4 μM. The MRP concentrations were measured on a QuikChem 8000 automated ion analyzer. Standards were prepared with the same solutions used for the extraction step to minimize matrix effects on P measurements. Sediment extracts and standards (0 – 30 μM PO4) were diluted ten-fold to prevent matrix interference with color development. The detection limit for P on this instrument is 0.2 μM. We derived MUP concentrations by subtracting MRP from total P concentrations. |
Purpose | This dataset is available to the public for a wide variety of uses including scientific research and analysis. |
Use Limitations |
|
Dataset Citation |
|
Cited Authors | |
Principal Investigators | |
Contributors | |
Resource Providers | |
Points of Contact | |
Publishers | |
Acknowledgments |
Theme keywords |
NODC DATA TYPES THESAURUS
NODC OBSERVATION TYPES THESAURUS
WMO_CategoryCode
|
Data Center keywords | NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords |
Platform keywords | NODC PLATFORM NAMES THESAURUS BCO-DMO Platform Names Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes |
Instrument keywords | NODC INSTRUMENT TYPES THESAURUS BCO-DMO Standard Instruments Global Change Master Directory (GCMD) Instrument Keywords Originator Instrument Names |
Place keywords | Provider Place Names |
Project keywords | BCO-DMO Standard Programs BCO-DMO Standard Projects Provider Cruise IDs Provider Funding Award Information |
Keywords | NCEI ACCESSION NUMBER |
Use Constraints |
|
Data License | |
Access Constraints |
|
Fees |
|
Lineage information for: dataset | |
---|---|
Processing Steps |
|
Output Datasets |
|
Acquisition Information (collection) | |
---|---|
Instrument |
|
Platform |
|
Last Modified: 2024-05-31T18:50:46Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov