http://lod.bco-dmo.org/id/dataset/893324
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2023-04-06
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Results from nutrient limitation assessments quantifying the level of Si, N, and Fe stress being experienced by phytoplankton in samples collected on EXPORTS cruise DY131 in the North Atlantic during May 2021
2023-04-06
publication
2023-04-06
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2023-04-13
publication
https://doi.org/10.26008/1912/bco-dmo.893324.1
Mark A. Brzezinski
University of California-Santa Barbara
principalInvestigator
Kristen Nicolle Buck
University of South Florida
principalInvestigator
Bethany D. Jenkins
University of Rhode Island
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Brzezinski, M. A., Buck, K., Jenkins, B. D. (2023) Results from nutrient limitation assessments quantifying the level of Si, N, and Fe stress being experienced by phytoplankton in samples collected on EXPORTS cruise DY131 in the North Atlantic during May 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-04-06 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.893324.1 [access date]
32Si and 14C Production - Experiments - from DY131 Dataset Description: <p>Depth profiles in the euphotic zone of nutrient (nitrate, silicate, phosphate) concentrations, profiles of silicic acid uptake rates, and assessment of limitation by Si, N, and Fe on both silicic acid uptake and carbon fixation.</p>
<p>See the related dataset (<a href="https://www.bco-dmo.org/dataset/893293" target="_blank">https://www.bco-dmo.org/dataset/893293</a>) for the profile data.</p> Methods and Sampling: <p>Seawater samples were collected using an epoxy coated CTD-rosette mounted with Go-Flo samplers and a Sea-Bird Electronics CTD (SBE9plus). Go-Flo bottles were transferred to a trace metal clean van for subsampling into polypropylene tubes (nutrients), polypropylene bottle (biogenic silica and particulate carbon and nitrogen) or TM acid-cleaned polycarbonate incubation bottles (Si-32 &amp; C-14 incubation experiments).</p>
<p>Nutrient samples were filtered through 0.2 micrometer (μm) polycarbonate filters and frozen at -20° Celsius (C). Samples for biogenic silica concentrations were size fractionated by serial filtration through 5 μm and 0.6 μm polycarbonate filters Filters were stored frozen at -20°C. Particulate organic carbon and nitrogen were measured on samples from experiments examining the effect of added Fe and Si on carbon fixation. These samples were filtered through precombusted GFF filters placed in glass scintillation vials and frozen at -20°C.</p>
<p>Samples for silicic acid uptake profiles were spiked with the radioisotope Si-32. Nutrient limitation assays were performed on pairs of samples where the rate of silicic acid uptake (Si-32) or carbon fixation (C-14 in paired light/dark bottles) were determined in unaltered controlled samples and in samples augmented with either silicic acid (20 μM), nitrate (20 μM) or iron chloride (1 nanomolar (nM)). All samples were incubated on deck in simulated in situ incubators cooled with flowing surface seawater for 24 hours. Profiles sampled six depths from near surface to the 1% light level. Nutrient limitation assays were performed at the 40% and 10% light levels.</p>
<p>Particles from incubated samples were size fractionated by serial filtration through 5 μm and 0.6 μm 25-millimeter (mm) polycarbonate filters. For C-14 incubations, total radioactivity in each sample was determined by sampling 100 μl of sample seawater prior to filtration. Filters from Si-32 incubations were placed on plastic planchettes and dried before covering with mylar film and stored for analysis ashore using low-level beta counters (Riso Inc). Filters from C-14 incubations were acidified in glass scintillation vials, scintillation cocktail (Ultima Gold XR) was added followed by liquid scintillation counting. Total radioactivity samples received 100 μL of b-phenethylamine and 5 mL of scintillation cocktail prior to analysis at sea using a Tri-Carb 3110TR scintillation counter.</p>
<p>Biogenic silica concentrations were determined by NaOH digestion followed by colorimetric analysis of the resulting dissolved Si. Particulate organic carbon and nitrogen samples were analyzed by Dumas combustion. Nutrient concentrations were determined by flow injection using a Lachat Instruments QuikChem 8500 Series 2 anayzer.</p>
<p>For more information, see the Protocol documents attached as Supplemental Files and <a href="https://msi.ucsb.edu/facilities-services/analytical-lab/services" target="_blank">https://msi.ucsb.edu/facilities-services/analytical-lab/services</a>.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756442 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756442
completed
Mark A. Brzezinski
University of California-Santa Barbara
805-893-7061
UCSB Marine Science Institute Bldg 520 Rm 4002 Fl 4L
Santa Barbara
CA
93106
USA
mark.brzezinski@lifesci.ucsb.edu
pointOfContact
Kristen Nicolle Buck
University of South Florida
541-737-7401
2651 SW Orchard Avenue CEOAS
Corvallis
OR
97331
USA
kristen.buck@oregonstate.edu
pointOfContact
Bethany D. Jenkins
University of Rhode Island
401-874-7551
Department of Cell and Molecular Biology and Graduate School of Oceanography 279 CBLS, 120 Flagg Road
Kingston
RI
02881
USA
bdjenkins@uri.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise
ISO_DateTime_UTC
Event
Activity
Station
Cast
Latitude
Longitude
Target_Depth
Actual_Depth
Light_Level
Treatment
rate_14C_uptake_24hr_0_6umfilt_to_5umprefilt
rate_14C_uptake_24hr_gt_5umfilt
rate_32Si_uptake_24hr_0_6umfilt_to_5umprefilt
rate_32Si_uptake_specific_24hr_0_6umfilt_5umprefilt
rate_32Si_uptake_24hr_gt_5umfilt
rate_32Si_uptake_specific_24hr_gt_5umfilt
Sea-Bird Electronics CTD (SBE9plus)
Go-Flo samplers
Lachat Instruments QuikChem 8500 Series 2 analyzer
Tri-Carb 3110TR
theme
None, User defined
Cruise identfier
ISO_DateTime_UTC
event
instrument
station
cast
latitude
longitude
depth nominal
PAR
treatment
14C
Silicic acid
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird
GO-FLO Bottle
Lachat QuikChem 8500 flow injection analysis system
PerkinElmer Tri-Carb 3110TR low activity liquid scintillation analyzer
instrument
BCO-DMO Standard Instruments
DY131
service
Deployment Activity
Celtic Sea
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
EXport Processes in the Ocean from Remote Sensing
http://oceanexports.org/
EXport Processes in the Ocean from Remote Sensing
EXport Processes in the Ocean from Remote Sensing (EXPORTS) is a large-scale NASA-led field campaign that will provide critical information for quantifying the export and fate of upper ocean net primary production (NPP) using satellite observations and state of the art ocean technologies.
Ocean ecosystems play a critical role in the Earth’s carbon cycle and the quantification of their impacts for both present conditions and for predictions into the future remains one of the greatest challenges in oceanography. The goal of the EXport Processes in the Ocean from Remote Sensing (EXPORTS) Science Plan is to develop a predictive understanding of the export and fate of global ocean net primary production (NPP) and its implications for present and future climates. The achievement of this goal requires a quantification of the mechanisms that control the export of carbon from the euphotic zone as well as its fate in the underlying "twilight zone" where some fraction of exported carbon will be sequestered in the ocean’s interior on time scales of months to millennia. In particular, EXPORTS will advance satellite diagnostic and numerical prognostic models by comparing relationships among the ecological, biogeochemical and physical oceanographic processes that control carbon cycling across a range of ecosystem and carbon cycling states. EXPORTS will achieve this through a combination of ship and robotic field sampling, satellite remote sensing and numerical modeling. Through a coordinated, process-oriented approach, EXPORTS will foster new insights on ocean carbon cycling that maximizes its societal relevance through the achievement of U.S. and International research agency goals and will be a key step towards our understanding of the Earth as an integrated system.
EXPORTS
largerWorkCitation
program
Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump
https://osprey.bco-dmo.org/project/757387
Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump
<p><em>NSF Award Abstract:</em><br />
This project focuses on a group of microscopic single-celled photosynthetic organisms in the ocean called diatoms. Diatoms float in the surface ocean as part of a group of organisms collectively called phytoplankton. There are thousands of different species of diatoms distributed across the global ocean. A famous oceanographer Henry Bigelow once said "All fish is diatoms" reflecting the importance of diatoms as the base of the food chain that supports the world's largest fisheries. Despite their small size, diatom photosynthesis produces 20% of the oxygen on earth each year. That's more than all of the tropical rain forests on land. The major objective of the research is to understand how the metabolic differences among diatom species affects the amount of diatom organic carbon that is carried, or exported, from the surface ocean to the deep ocean. As diatoms are photo-synthesizers like green plants, their biological carbon comes from converting carbon dioxide dissolved in seawater from the atmosphere into organic forms. Diatoms also require a series of other nurtrients supplied by the ocean such as nitrogen and phosphorous and, uniquely for diatoms, the silicon used to construct their glass shells. This research will investigate how genetic and physiological differences among diatoms influence how each species react to changes in nutrient levels in the ocean and how those shifts affect the export of diatom carbon to the deep sea. The link between diatoms' physiological response and their carbon export comes about because shifts in physiology affect diatom attributes like how fast they sink and how tasty they are to predators. So if we can relate the physiological condition of different diatoms to the food-web pathways followed by different species, we can ultimately use knowledge of diatom physiological status and food web structure to predict how much diatom carbon gets to the deep sea. The research involves investigators with expertise in the physiology and genomics of diatoms and in the ocean's chemistry. The work will initially take place in the subarctic North Pacific in conjunction with the NASA Export Processes in the Ocean from RemoTe Sensing (EXPORTS) field program. The EXPORTS program is using a wide variety of methods to quantify the export and fate of photo-synthetically fixed carbon in the upper ocean. The research supports the training of undergraduate students, graduate students and a postdoctoral scholar. The research will also serve as the basis for activities aimed at K-12 and junior high school students.</p>
<p>The research will broadly impact our understanding of the biology of the biological pump (the transport of photo-synthetically fixed organic carbon to the deep sea) by forming a mechanistic basis for predicting the export of diatom carbon. It is hypothesized that the type and degree of diatom physiological stress are vital aspects of ecosystem state that drive export. To test this hypothesis, the genetic composition, rates of nutrient use and growth response of diatom communities will be evaluated and supported with measurements of silicon and iron stress to evaluate stress as a predictor of the path of diatom carbon export. The subarctic N. Pacific ecosystem is characterized as high nutrient low chlorophyll (HNLC) due to low iron (Fe) levels that are primary controllers constraining phytoplankton utilization of other nutrients. It has been a paradigm in low Fe, HNLC systems that diatoms grow at elevated Si:C and Si:N ratios and should be efficiently exported as particles significantly enriched in Si relative to C. However, Fe limitation also alters diatoms species composition and the high Si demand imposed by low Fe can drive HNLC regions to Si limitation or Si/Fe co-limitation. Thus, the degree of Si and/or Fe stress in HNLC waters can all alter diatom taxonomic composition, the elemental composition of diatom cells, and the path cells follow through the food web ultimately altering diatom carbon export.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Diatoms and carbon export
largerWorkCitation
project
eng; USA
oceans
Celtic Sea
-14.9764
-14.5095
48.7816
49.2341
2021-05-06
2021-05-27
Sub-Arctic Pacific, Ocean Station Papa
0
BCO-DMO catalogue of parameters from Results from nutrient limitation assessments quantifying the level of Si, N, and Fe stress being experienced by phytoplankton in samples collected on EXPORTS cruise DY131 in the North Atlantic during May 2021
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/893426.rdf
Name: Cruise
Units: unitless
Description: <p>cruise during which sample was collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/893427.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>date and time (UTC) of sample collection in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/893428.rdf
Name: Event
Units: unitless
Description: <p>event number from R2R event log</p>
http://lod.bco-dmo.org/id/dataset-parameter/893429.rdf
Name: Activity
Units: unitless
Description: <p>which instrument was used for sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/893430.rdf
Name: Station
Units: unitless
Description: <p>station identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/893431.rdf
Name: Cast
Units: unitless
Description: <p>CTD or TM cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/893432.rdf
Name: Latitude
Units: decimal degrees
Description: <p>latitude (positive values = North; negative values = South)</p>
http://lod.bco-dmo.org/id/dataset-parameter/893433.rdf
Name: Longitude
Units: decimal degrees
Description: <p>longitude (positive values = East; negative values = West)</p>
http://lod.bco-dmo.org/id/dataset-parameter/893434.rdf
Name: Target_Depth
Units: meters (m)
Description: <p>target depth for sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/893435.rdf
Name: Actual_Depth
Units: meters (m)
Description: <p>actual depth for sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/893436.rdf
Name: Light_Level
Units: unitless (percent)
Description: <p>percent light level (PAR sensor)</p>
http://lod.bco-dmo.org/id/dataset-parameter/893437.rdf
Name: Treatment
Units: unitless
Description: <p>experimental treatment:<br />
CTRL = no nutrient additions;<br />
+Si = addition of volume of 0.1M sodium metasilicate (Na2SiO3) solution to increase ambient dissolved silicon by 20uM;<br />
+Fe = addition of volume of 0.01mM ferric chloride (FeCl3) for a total concentration of 1nM;<br />
+Si+Fe = addition of both Si + Fe;<br />
+N = addition of volume of 0.1M sodium nitrate (NaNO3) solution to 20uM;<br />
+Si+N = addition of both Si + N.</p>
http://lod.bco-dmo.org/id/dataset-parameter/893438.rdf
Name: rate_14C_uptake_24hr_0_6umfilt_to_5umprefilt
Units: micromoles Carbon per liter per day (umol C L^1 d^1)
Description: <p>size fractionated primary production 14C uptake for the 0.6 to 5 micrometer (um) size fraction</p>
http://lod.bco-dmo.org/id/dataset-parameter/893439.rdf
Name: rate_14C_uptake_24hr_gt_5umfilt
Units: micromoles Carbon per liter per day (umol C L^1 d^1)
Description: <p>size fractionated primary production 14C uptake for the size fraction of 5 micrometers (um) and greater</p>
http://lod.bco-dmo.org/id/dataset-parameter/893440.rdf
Name: rate_32Si_uptake_24hr_0_6umfilt_to_5umprefilt
Units: micromoles Carbon per liter per day (umol C L^1 d^1)
Description: <p>size fractionated silicic acid 32Si uptake for the 0.6 to 5 micrometer (um) size fraction</p>
http://lod.bco-dmo.org/id/dataset-parameter/893441.rdf
Name: rate_32Si_uptake_specific_24hr_0_6umfilt_5umprefilt
Units: per day (d^1)
Description: <p>size fractionated specific silicic acid 32Si uptake for the 0.6 to 5 micrometer (um) size fraction</p>
http://lod.bco-dmo.org/id/dataset-parameter/893442.rdf
Name: rate_32Si_uptake_24hr_gt_5umfilt
Units: nanomoles Si per liter per day (nmol Si L^1 d^1)
Description: <p>size fractionated silicic acid 32Si uptake for the size fraction of 5 micrometers (um) and greater</p>
http://lod.bco-dmo.org/id/dataset-parameter/893443.rdf
Name: rate_32Si_uptake_specific_24hr_gt_5umfilt
Units: per day (d^1)
Description: <p>size fractionated specific silicic acid 32Si uptake for the size fraction of 5 micrometers (um) and greater</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
6336
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/1967cb11-29d1-4a0e-84eb-f7fd546aeb4d/content
download
https://doi.org/10.26008/1912/bco-dmo.893324.1
download
onLine
dataset
<p>Seawater samples were collected using an epoxy coated CTD-rosette mounted with Go-Flo samplers and a Sea-Bird Electronics CTD (SBE9plus). Go-Flo bottles were transferred to a trace metal clean van for subsampling into polypropylene tubes (nutrients), polypropylene bottle (biogenic silica and particulate carbon and nitrogen) or TM acid-cleaned polycarbonate incubation bottles (Si-32 &amp; C-14 incubation experiments).</p>
<p>Nutrient samples were filtered through 0.2 micrometer (μm) polycarbonate filters and frozen at -20° Celsius (C). Samples for biogenic silica concentrations were size fractionated by serial filtration through 5 μm and 0.6 μm polycarbonate filters Filters were stored frozen at -20°C. Particulate organic carbon and nitrogen were measured on samples from experiments examining the effect of added Fe and Si on carbon fixation. These samples were filtered through precombusted GFF filters placed in glass scintillation vials and frozen at -20°C.</p>
<p>Samples for silicic acid uptake profiles were spiked with the radioisotope Si-32. Nutrient limitation assays were performed on pairs of samples where the rate of silicic acid uptake (Si-32) or carbon fixation (C-14 in paired light/dark bottles) were determined in unaltered controlled samples and in samples augmented with either silicic acid (20 μM), nitrate (20 μM) or iron chloride (1 nanomolar (nM)). All samples were incubated on deck in simulated in situ incubators cooled with flowing surface seawater for 24 hours. Profiles sampled six depths from near surface to the 1% light level. Nutrient limitation assays were performed at the 40% and 10% light levels.</p>
<p>Particles from incubated samples were size fractionated by serial filtration through 5 μm and 0.6 μm 25-millimeter (mm) polycarbonate filters. For C-14 incubations, total radioactivity in each sample was determined by sampling 100 μl of sample seawater prior to filtration. Filters from Si-32 incubations were placed on plastic planchettes and dried before covering with mylar film and stored for analysis ashore using low-level beta counters (Riso Inc). Filters from C-14 incubations were acidified in glass scintillation vials, scintillation cocktail (Ultima Gold XR) was added followed by liquid scintillation counting. Total radioactivity samples received 100 μL of b-phenethylamine and 5 mL of scintillation cocktail prior to analysis at sea using a Tri-Carb 3110TR scintillation counter.</p>
<p>Biogenic silica concentrations were determined by NaOH digestion followed by colorimetric analysis of the resulting dissolved Si. Particulate organic carbon and nitrogen samples were analyzed by Dumas combustion. Nutrient concentrations were determined by flow injection using a Lachat Instruments QuikChem 8500 Series 2 anayzer.</p>
<p>For more information, see the Protocol documents attached as Supplemental Files and <a href="https://msi.ucsb.edu/facilities-services/analytical-lab/services" target="_blank">https://msi.ucsb.edu/facilities-services/analytical-lab/services</a>.</p>
Specified by the Principal Investigator(s)
<p>Silicon uptake was calculated as the product of the fraction of total Si-32 radioactivity taken up and the ambient silicic acid concertation. Rates of primary production were calculated as the product of the fraction of total C-14 radioactivity taken up and a DIC value of 2132 micromoles per kilogram (μmol kg-1) correcting for isotope discrimination (x 1.05).</p>
<p>Nutrient concentrations were adjusted using certified JAMSTEC CRMs.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- removed "~" and "ND" as a missing data values (replaced by blanks/empty values);<br />
- renamed fields to comply with BCO-DMO naming conventions;<br />
- created ISO 8601 date-time field and removed original date and column columns;<br />
- rounded last 6 columns to 9 decimal places.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Sea-Bird Electronics CTD (SBE9plus)
Sea-Bird Electronics CTD (SBE9plus)
PI Supplied Instrument Name: Sea-Bird Electronics CTD (SBE9plus) Instrument Name: CTD Sea-Bird Instrument Short Name:CTD Sea-Bird Instrument Description: A Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics. This instrument designation is used when specific make and model are not known or when a more specific term is not available in the BCO-DMO vocabulary. Refer to the dataset-specific metadata for more information about the specific CTD used. More information from: http://www.seabird.com/ Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
Go-Flo samplers
Go-Flo samplers
PI Supplied Instrument Name: Go-Flo samplers Instrument Name: GO-FLO Bottle Instrument Short Name:GO-FLO Instrument Description: GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
Lachat Instruments QuikChem 8500 Series 2 analyzer
Lachat Instruments QuikChem 8500 Series 2 analyzer
PI Supplied Instrument Name: Lachat Instruments QuikChem 8500 Series 2 analyzer Instrument Name: Lachat QuikChem 8500 flow injection analysis system Instrument Short Name:QuikChem 8500 Instrument Description: The Lachat QuikChem 8500 Series 2 Flow Injection Analysis System features high sample throughput and simple, but rapid, method changeover. The QuikChem 8500 Series 2 system maximises productivity in determining ionic species in a variety of sample types, from sub-ppb to percent concentrations. Analysis takes 20 to 60 seconds, with a sample throughput of 60 to 120 samples per hour.
Tri-Carb 3110TR
Tri-Carb 3110TR
PI Supplied Instrument Name: Tri-Carb 3110TR Instrument Name: PerkinElmer Tri-Carb 3110TR low activity liquid scintillation analyzer Instrument Short Name:Tri-Carb 3110TR Instrument Description: The PerkinElmer Tri-Carb 3110TR is a benchtop liquid scintillation analyzer for detecting small amounts of alpha, beta, and gamma radioactivity. It features a Multichannel Analyzer with an effective resolution of 1/10 keV and an extended dynamic quench range. Sample capacity is either 408 standard 20 mL vials, or 720 small 4 or 7 mL vials. The instrument includes a barium-133 low-energy external standard source centered under the sample vial which eliminates the effects of volume variations. It has an energy range of 0-2000 keV and an operating ambient temperature range of 15-35 degrees Celsius.
Cruise: DY131
DY131
Community Standard Description
International Council for the Exploration of the Sea
RRS Discovery
vessel
DY131
Craig M. Lee
University of Washington
https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/dy131.pdf
Report describing DY131
Community Standard Description
International Council for the Exploration of the Sea
RRS Discovery
vessel