http://lod.bco-dmo.org/id/dataset/982348
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
2025-08-12
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Stable isotope analyses, mercury measurements, and capture data from two Lake Erie fish species collected from June to October 2019 for Project Breathless
2025-08-12
publication
2025-08-12
revision
BCO-DMO Linked Data URI
2025-08-12
creation
http://lod.bco-dmo.org/id/dataset/982348
Karin Limburg
State University of New York College of Environmental Science and Forestry
principalInvestigator
Roxanne Razavi
State University of New York College of Environmental Science and Forestry
principalInvestigator
Elizabeth Duskey
State University of New York College of Environmental Science and Forestry
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: Limburg, K., Razavi, R., Miraly, H., Duskey, E., Kraus, R., Gorman, A. (2025) Stable isotope analyses, mercury measurements, and capture data from two Lake Erie fish species collected from June to October 2019 for Project Breathless. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-08-12 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/982348 [access date]
Lake Erie fishes SIA and Hg Dataset Description: <p>This dataset is part of Project Breathless, which brings together an interdisciplinary team of ecologists, economists and communication scholars to increase understanding of the impact of low oxygen dead zones in lakes and oceans.&nbsp; The project team focuses on how low oxygen conditions influence fish, their habitats and the food webs that support them, as well as ecosystem services, including fisheries production.</p>
<p>This dataset is one of three examining Lake Erie fishes using data collected during routine surveys for monitoring the status of fish stocks:</p>
<ul>
<li><strong>Dataset 982348 (this dataset of stables isotopes and mercury)&nbsp;</strong>summarizes capture data as well as basic biological information; it also includes all stable isotopic ratio and total mercury data collected from muscle tissue and eye lenses.&nbsp;</li>
<li>Dataset 982372 (Lake Erie fishes otolith chemistry)&nbsp;contains all of the Lake Erie fish (round goby and yellow perch) otolith chemistry data.</li>
<li>Dataset 982386 (Lake Erie&nbsp;fishes eye lens chemistry)&nbsp;contains all of the eye lens chemistry data for round goby and yellow perch.</li>
</ul>
<p><em>(See Related Datasets section below for links)</em></p> Methods and Sampling: <p><strong>Fish sampling, basic biological data, and tissues collection&nbsp;</strong></p>
<p>Fish samples were provided from routine monitoring surveys by the Ohio Department of Natural Resources (Fairport Harbor, OH) and by the USGS Lake Erie Biological Station (Sandusky, OH). Dates and locations of trawling are provided. Fish were caught by trawl or by gillnet sets. Fish were frozen for later processing.</p>
<p>In the lab, fish were measured (length, weight); sex was determined if possible. Otoliths and eye lenses were removed, cleaned, and stored dry until workup. Samples of dorsal muscle tissue were collected (away from the skin) for mercury and stable isotope analysis and were dried to constant weight, then freeze-dried.</p>
<p><strong>Total mercury and stable isotopes in muscle tissues; stable isotopes in eye lenses</strong></p>
<p>Total mercury analyses were conducted using atomic absorption spectrophotometry on a Milestone DMA-80 tri-cell unit (Milestone Srl, Italy). Briefly, the method involves thermal decomposition of a sample, amalgamation of mercury, and absorbance of mercury using a spectrophotometer.&nbsp; Quality assurance and quality control followed EPA Method 7473, including daily calibration checks, the use of blanks, certified reference materials, and matrix spike/matrix spike duplicates. Sample duplicates were analyzed on a minimum of 20% of samples. Muscle tissues were analyzed with this method typically using 40 mg of&nbsp;tissue.</p>
<p>Stable isotopic ratio analyses for carbon (C), nitrogen (N), and sometimes sulfur (S)&nbsp;were conducted by either the Stable Isotope Facility at the University of California at Davis or at the Cornell University Isotope Laboratory. Both facilities routinely analyze solid samples, such as ours, using elemental analyzers on the front end of isotope ratio mass spectrometers (EA-IRMS). Light stable isotopes of C and N were analyzed at UC Davis with&nbsp;PDZ Europa ANCA-GSL elemental analyzer interfaced to a PDZ Europa 20-20 isotope ratio mass spectrometer (Sercon Ltd., Cheshire, UK). At Cornell, a Thermo Delta V isotope ratio mass spectrometer (IRMS) is interfaced to a NC2500 elemental analyzer (EA). Sulfur isotopes were analyzed separately on the same mass spectrometer at Cornell. Delta values are expressed relative to Vienna Pee Dee Belemnite (for carbon), air (for nitrogen), and Vienna Canyon Diablo Troilite (for sulfur) standards.&nbsp;Muscle tissues were analyzed for all three light isotopic ratios. In addition, sulfur stable isotopic ratios were analyzed for round goby using one entire lens. For yellow perch, the outer (most recently deposited) layer was analyzed for a subset of Central Basin yellow perch, and all but one Western Basin yellow perch</p>
<p><em>(For otolith chemistry and fish eye lens chemistry results, see Related Datasets section below.)</em><br />
&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1923965 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1923965
onGoing
Karin Limburg
State University of New York College of Environmental Science and Forestry
315-470-6741
249 Illick Hall 1 Forestry Dr.
Syracuse
NY
13210
United States
klimburg@esf.edu
pointOfContact
Roxanne Razavi
State University of New York College of Environmental Science and Forestry
razavi@esf.edu
pointOfContact
Elizabeth Duskey
State University of New York College of Environmental Science and Forestry
duskey.18@osu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Fish_ID
CRN
Basin
Species
Lake_Erie_Sampling_Grid
Latitude_Start
Longitude_Start
Latitude_End
Longitude_End
Total_Length
Weight
Sex
Age
Month
Day
Year
Date_Collection
Agency_ID
Muscle_d13C_VPDB
Muscle_d15N_Air
Muscle_d34S_VCDT
Eye_Lens_d13C_VPDB
Eye_Lens_d15N_Air
Eye_lens_d34S_VCDT
Total_Hg_muscle
Comments
NC2500 Elemental Analyzer
Milestone DMA-80 tri-cell unit atomic absorption spectrophotometer
PDZ Europa 20-20 isotope ratio mass spectrometer
PDZ Europa ANCA-GSL elemental analyzer
Thermo Delta V isotope ratio mass spectrometer (IRMS)
theme
None, User defined
sample identification
Cruise identfier
region
species scientific name (binomial)
site
latitude at start time of measurement
longitude at start time of measurement
latitude at end time of measurement
longitude at end time of measurement
fish_len
weight
sex
age
month of year
day of month
year
date
d13C measured in biota
d15N measured in biota
d34S_bio
total mercury
comments
featureType
BCO-DMO Standard Parameters
Carlo Erba NC 2500 elemental analyzer
Milestone Direct Mercury Analyzer
PDZ Europa 20-20 isotope ratio mass spectrometer
PDZ Europa ANCA-GSL elemental analyzer
Thermo Fisher Scientific DELTA V Advantage isotope ratio mass spectrometer
instrument
BCO-DMO Standard Instruments
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.
Collaborative Research: Shifting the Hypoxia Paradigm – New Directions to Explore the Spread and Impacts of Ocean/Great Lakes Deoxygenation
https://osprey.bco-dmo.org/project/770460
Collaborative Research: Shifting the Hypoxia Paradigm – New Directions to Explore the Spread and Impacts of Ocean/Great Lakes Deoxygenation
<p><em>NSF Award Abstract:</em><br />
Ocean oxygen loss (deoxygenation) is increasing due to climate warming. This warming, together with nutrient loading, is causing many marine and freshwater systems to experience increasing episodes of hypoxia (low oxygen) of greater duration and intensity. Impacts on fish and fisheries have been difficult to quantify; direct observation has been challenged by a lack of long-term exposure indicators. This team has successfully refined the use of fish chemical biomarkers in fish otoliths (earstones) to directly assess lifetime hypoxia exposure in fishes. This project will those findings to look for additional biomarkers and models, to expand our understanding of how hypoxia affects fish and their food webs, contaminant transfers, and ecosystem services including economic impacts. The project includes a unique way of training students in science communication, posing the question: What forms of media and "messaging strategies" about deoxygenation are most effective at raising public awareness and understanding? Students are developing entries for PlanetForward's Storyfest, which is a contest to tell compelling stories to foster environmental understanding and solutions. Students from historically underrepresented, economically disadvantaged backgrounds are particularly sought out to participate. The investigators will engage with regional, national, and international management agencies and other relevant stakeholder groups to share information.</p>
<p>This project encompasses a novel, linked set of interdisciplinary studies of food webs, and ecosystem services assessment. The thematic questions explored in this project are: 1. How does hypoxia alter habitat use for fishes? 2. How does hypoxia-altered habitat use and habitat productivity change food webs? 3. How does hypoxia affect/enhance trophic transfer of methylmercury? 4. How do hypoxia-induced changes in food webs affect aquatic ecosystem services? The set of linked studies will employ chemical analyses of otoliths and eye lenses, combined with chemical analyses of muscle tissues (Questions 1 and 3), physiologically-structured food web modeling informed by monitoring time-series (Questions 2 and 4), and a scoping workshop to address ecosystem services (Question 4). The investigators are using a "trans-basin" comparative approach to system-specific responses, studying fishes in Lake Erie, the Baltic Sea, and a Gulf of Mexico estuary. They study three species from each system that represent different degrees of benthic reliance, to discern differential responses to the increasingly hypoxic environment. This research provides novel insight about variable biotic responses to oxygen loss and the impacts on ecosystem functioning.</p>
HypoxiDigm / Project Breathless
largerWorkCitation
project
eng; USA
biota
oceans
-83.2636
-80.58483
41.47523
42.00286
2019-06-08
2019-10-19
Central Baltic Sea; Lake Erie; and Lavaca Bay, Texas
0
BCO-DMO catalogue of parameters from Stable isotope analyses, mercury measurements, and capture data from two Lake Erie fish species collected from June to October 2019 for Project Breathless
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/982519.rdf
Name: Fish_ID
Units: unitless
Description: <p>Unique fish sample identification</p>
http://lod.bco-dmo.org/id/dataset-parameter/982520.rdf
Name: CRN
Units: unitless
Description: <p>Cruise number for the collecting trip, either Ohio Dept of Natural Resources (OHDNR) or the US Geological Survey (USGS)</p>
http://lod.bco-dmo.org/id/dataset-parameter/982521.rdf
Name: Basin
Units: unitless
Description: <p>Indicates which basin in Lake Erie was sampled (Central Basin or Western Basin)</p>
http://lod.bco-dmo.org/id/dataset-parameter/982522.rdf
Name: Species
Units: unitless
Description: <p>Scientific name of the collected fish</p>
http://lod.bco-dmo.org/id/dataset-parameter/982523.rdf
Name: Lake_Erie_Sampling_Grid
Units: unitless
Description: <p>Number for the sample location based on the sampling grid laid out by New York, Pennsylvania, and Ohio fisheries agencies</p>
http://lod.bco-dmo.org/id/dataset-parameter/982524.rdf
Name: Latitude_Start
Units: decimal degrees
Description: <p>Latitudinal start of trawl</p>
http://lod.bco-dmo.org/id/dataset-parameter/982525.rdf
Name: Longitude_Start
Units: decimal degrees
Description: <p>Longituinal start of trawl</p>
http://lod.bco-dmo.org/id/dataset-parameter/982526.rdf
Name: Latitude_End
Units: decimal degrees
Description: <p>Latitudinal end of trawl</p>
http://lod.bco-dmo.org/id/dataset-parameter/982527.rdf
Name: Longitude_End
Units: decimal degrees
Description: <p>Longituinal end of trawl</p>
http://lod.bco-dmo.org/id/dataset-parameter/982528.rdf
Name: Total_Length
Units: millimeters (mm)
Description: <p>Fish total length in millimeters</p>
http://lod.bco-dmo.org/id/dataset-parameter/982529.rdf
Name: Weight
Units: grams (g)
Description: <p>Fresh weight in grams</p>
http://lod.bco-dmo.org/id/dataset-parameter/982530.rdf
Name: Sex
Units: unitless
Description: <p>Sex designation of the fish</p>
http://lod.bco-dmo.org/id/dataset-parameter/982531.rdf
Name: Age
Units: years
Description: <p>Fish age in years, determined by counting otolith bands</p>
http://lod.bco-dmo.org/id/dataset-parameter/982532.rdf
Name: Month
Units: unitless
Description: <p>Month of collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/982533.rdf
Name: Day
Units: unitless
Description: <p>Day within month of collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/982534.rdf
Name: Year
Units: unitless
Description: <p>Year of collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/982535.rdf
Name: Date_Collection
Units: unitless
Description: <p>Date of collection (when month, day, year all known)</p>
http://lod.bco-dmo.org/id/dataset-parameter/982536.rdf
Name: Agency_ID
Units: unitless
Description: <p>Fish ID for OH-DNR or USGS</p>
http://lod.bco-dmo.org/id/dataset-parameter/982537.rdf
Name: Muscle_d13C_VPDB
Units: per mille (‰)
Description: <p>Stable isotopic ratio of carbon (delta13C) in fish muscle tissue compared to Vienna Pee Dee Belemnite standard</p>
http://lod.bco-dmo.org/id/dataset-parameter/982538.rdf
Name: Muscle_d15N_Air
Units: per mille (‰)
Description: <p>Stable isotopic ratio of nitrogen (delta15N) in fish muscle tissue compared to Air standard</p>
http://lod.bco-dmo.org/id/dataset-parameter/982539.rdf
Name: Muscle_d34S_VCDT
Units: per mille (‰)
Description: <p>Sulfur isotopic ratio (delta34S) of fish muscle tissue compared to Vienna Canyon Diablo Triolite standard</p>
http://lod.bco-dmo.org/id/dataset-parameter/982540.rdf
Name: Eye_Lens_d13C_VPDB
Units: per mille (‰)
Description: <p>Stable isotopic ratio of carbon (delta13C) of fish eye lens (whole lens for N. melanostomus, outer layer for P. flavescens ) compared to Vienna Pee Dee Belemnite standard;</p>
http://lod.bco-dmo.org/id/dataset-parameter/982541.rdf
Name: Eye_Lens_d15N_Air
Units: per mille (‰)
Description: <p>Stable isotopic ratio of nitrogen (delta 15N) of fish eye lens (whole lens for N. melanostomus, outer layer for P. flavescens) compared to Air standard</p>
http://lod.bco-dmo.org/id/dataset-parameter/982542.rdf
Name: Eye_lens_d34S_VCDT
Units: per mille (‰)
Description: <p>Sulfur isotopic ratio (delta 34S) of fish eye lens (whole lens for N. melanostomus, outer layer for P. flavescens) compared to Vienna Canyon Diablo Triolite standard</p>
http://lod.bco-dmo.org/id/dataset-parameter/982543.rdf
Name: Total_Hg_muscle
Units: nanograms per gram dry weight (ng/g)
Description: <p>Total mercury in fish muscle tissue</p>
http://lod.bco-dmo.org/id/dataset-parameter/982544.rdf
Name: Comments
Units: unitless
Description: <p>Laboratory and analysis comments</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
https://osprey.bco-dmo.org/dataset/982348/data/download
download
onLine
dataset
<p><strong>Fish sampling, basic biological data, and tissues collection&nbsp;</strong></p>
<p>Fish samples were provided from routine monitoring surveys by the Ohio Department of Natural Resources (Fairport Harbor, OH) and by the USGS Lake Erie Biological Station (Sandusky, OH). Dates and locations of trawling are provided. Fish were caught by trawl or by gillnet sets. Fish were frozen for later processing.</p>
<p>In the lab, fish were measured (length, weight); sex was determined if possible. Otoliths and eye lenses were removed, cleaned, and stored dry until workup. Samples of dorsal muscle tissue were collected (away from the skin) for mercury and stable isotope analysis and were dried to constant weight, then freeze-dried.</p>
<p><strong>Total mercury and stable isotopes in muscle tissues; stable isotopes in eye lenses</strong></p>
<p>Total mercury analyses were conducted using atomic absorption spectrophotometry on a Milestone DMA-80 tri-cell unit (Milestone Srl, Italy). Briefly, the method involves thermal decomposition of a sample, amalgamation of mercury, and absorbance of mercury using a spectrophotometer.&nbsp; Quality assurance and quality control followed EPA Method 7473, including daily calibration checks, the use of blanks, certified reference materials, and matrix spike/matrix spike duplicates. Sample duplicates were analyzed on a minimum of 20% of samples. Muscle tissues were analyzed with this method typically using 40 mg of&nbsp;tissue.</p>
<p>Stable isotopic ratio analyses for carbon (C), nitrogen (N), and sometimes sulfur (S)&nbsp;were conducted by either the Stable Isotope Facility at the University of California at Davis or at the Cornell University Isotope Laboratory. Both facilities routinely analyze solid samples, such as ours, using elemental analyzers on the front end of isotope ratio mass spectrometers (EA-IRMS). Light stable isotopes of C and N were analyzed at UC Davis with&nbsp;PDZ Europa ANCA-GSL elemental analyzer interfaced to a PDZ Europa 20-20 isotope ratio mass spectrometer (Sercon Ltd., Cheshire, UK). At Cornell, a Thermo Delta V isotope ratio mass spectrometer (IRMS) is interfaced to a NC2500 elemental analyzer (EA). Sulfur isotopes were analyzed separately on the same mass spectrometer at Cornell. Delta values are expressed relative to Vienna Pee Dee Belemnite (for carbon), air (for nitrogen), and Vienna Canyon Diablo Troilite (for sulfur) standards.&nbsp;Muscle tissues were analyzed for all three light isotopic ratios. In addition, sulfur stable isotopic ratios were analyzed for round goby using one entire lens. For yellow perch, the outer (most recently deposited) layer was analyzed for a subset of Central Basin yellow perch, and all but one Western Basin yellow perch</p>
<p><em>(For otolith chemistry and fish eye lens chemistry results, see Related Datasets section below.)</em><br />
&nbsp;</p>
Specified by the Principal Investigator(s)
<p>Results data on total mercury and C, N, and S stable isotopes were received as-is from outside labs, with no further processing.</p>
Specified by the Principal Investigator(s)
- Imported data from source file "FILENAME.csv" into the BCO-DMO data system. loaded ...
- Modified parameter (column) names to conform with BCO-DMO naming conventions. The only allowed characters are A-Z,a-z,0-9, and underscores. No spaces, hyphens, commas, parentheses, or Greek letters.
- Combined month, day, year column values into a single date column (where possible)
- Added comments column for lab notes from the original file
Specified by BCO-DMO Data Managers
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
NC2500 Elemental Analyzer
NC2500 Elemental Analyzer
PI Supplied Instrument Name: NC2500 Elemental Analyzer PI Supplied Instrument Description:At Cornell, an isotope ratio mass spectrometer was interfaced to a NC2500 elemental analyzer (EA). Instrument Name: Carlo Erba NC 2500 elemental analyzer Instrument Short Name:Carlo Erba NC 2500 EA Instrument Description: A laboratory instrument that simultaneously determines total nitrogen, total hydrogen, and total carbon in a solid sample. The sample is completely and instantaneously oxidized by flash combustion, which converts all organic and inorganic substances into combustion products. The resulting combustion gases pass through a reduction furnace and are swept into the chromatographic column by the helium carrier gas. The gases are separated in the column and quantified or they can be introduced into another instrument, such as an isotope ratio mass spectrometer, for further analysis. The instrument was originally manufactured by CE instruments (formerly Carlo Erba) and has since been replaced by Thermo Scientific (part of Thermo Fisher Scientific). This model is no longer in production.
Milestone DMA-80 tri-cell unit atomic absorption spectrophotometer
Milestone DMA-80 tri-cell unit atomic absorption spectrophotometer
PI Supplied Instrument Name: Milestone DMA-80 tri-cell unit atomic absorption spectrophotometer PI Supplied Instrument Description:Mercury analyses of tissues were made with a Milestone DMA-80 tri-cell unit atomic absorption spectrophotometer. Instrument Name: Milestone Direct Mercury Analyzer Instrument Short Name:DMA-80 Instrument Description: The Milestone DMA-80 is a mercury analyzer used to determine mercury concentrations in liquid and solid samples. The DMA-80 is based on the principles of sample thermal decomposition, mercury amalgamation, and atomic absorption detection. See more: https://milestonesci.com/direct-mercury-analyzer/
PDZ Europa 20-20 isotope ratio mass spectrometer
PDZ Europa 20-20 isotope ratio mass spectrometer
PI Supplied Instrument Name: PDZ Europa 20-20 isotope ratio mass spectrometer PI Supplied Instrument Description:Light stable isotopes of C and N were analyzed at UC Davis with elemental analyzer interfaced to a PDZ Europa 20-20 isotope ratio mass spectrometer (Sercon Ltd., Cheshire, UK). Instrument Name: PDZ Europa 20-20 isotope ratio mass spectrometer Instrument Short Name:Europa 20-20 IRMS Instrument Description: The PDZ Europa 20-20 is a dedicated continuous flow isotope ratio mass spectrometer for hyphenated stable isotope analyses able to measure 15N, 13C, 18O, and 34S in a host of applications. The analyzer has been purposely designed to measure 2H by continuous flow methodology and is also suitable to analyze the light stable isotopes in all the commonly measured gases: H2, N2, NO, N2O, O2, CO, CO2, SO, and SO2.
PDZ Europa ANCA-GSL elemental analyzer
PDZ Europa ANCA-GSL elemental analyzer
PI Supplied Instrument Name: PDZ Europa ANCA-GSL elemental analyzer PI Supplied Instrument Description:Light stable isotopes of C and N were analyzed at UC Davis with PDZ Europa ANCA-GSL elemental analyzer interfaced to an isotope ratio mass spectrometer. Instrument Name: PDZ Europa ANCA-GSL elemental analyzer Instrument Short Name: Instrument Description: The ANCA-GSL module allows samples such as soil, viscous liquids, plant material, and organic compounds, to be analyzed directly by using Dumas combustion for 15N, 13C, and 34S or pyrolysis for 18O and D. It also allows isotope analysis of abundant gases from septum sealed containers. During combustion mode, a capsule containing the sample falls into the combustion tube and is converted in the presence of oxygen to CO2, N2, NOx, and H2O. An elemental copper stage reduces NOx, a MgClO4 trap removes water vapor, a switchable Carbosorb trap can be used to remove CO2 (for 15N only analyses) and a GC column separates CO2 from N2 (allowing dual isotope analysis). Modified packings, a Nafion dryer and different GC column allow 34S analysis. The sample preparation unit consists of a 66-place autosampler for unattended operation (larger options are available), 2 furnaces able to operate to 1100 deg C, and an on-board microprocessor. The analyzer is capable of dual isotope analysis of 15N and 13C. For CO (18O), H2 (2H), N2 (15N), CO2 (13C), CO2 (18O), and SO2 (34S) with precisions between 0.1 and 3 dependent on the element.
Thermo Delta V isotope ratio mass spectrometer (IRMS)
Thermo Delta V isotope ratio mass spectrometer (IRMS)
PI Supplied Instrument Name: Thermo Delta V isotope ratio mass spectrometer (IRMS) PI Supplied Instrument Description:At Cornell, a Thermo Delta V isotope ratio mass spectrometer (IRMS) is interfaced to an elemental analyzer. Instrument Name: Thermo Fisher Scientific DELTA V Advantage isotope ratio mass spectrometer Instrument Short Name:Delta V Advantage Instrument Description: The Thermo Scientific DELTA V Advantage is an isotope ratio mass spectrometer designed to measure isotopic, elemental, and molecular ratios of organic and inorganic compounds. The DELTA V Advantage is the standard model of the DELTA V series of isotope ratio mass spectrometers, which can be upgraded to the DELTA V Plus. The DELTA V Advantage can be operated in Continuous Flow or Dual Inlet mode. The standard collector configuration is the Universal Triple Collector. H2 collectors with online hydrogen capability are optional. The DELTA V Advantage is controlled by an automated, integrated Isodat software suite. A magnet, whose pole faces determine the free flight space for the ions, eliminates the traditional flight tube. The magnet is designed for fast mass switching which is further supported by a fast jump control between consecutive measurements of multiple gases within one run. The sample gas is introduced at ground potential, eliminating the need for insulation of the flow path, ensuring 100 percent transfer into the ion source. The amplifiers register ion beams up to 50 V. The DELTA V Advantage has a sensitivity of 1200 molecules per ion (M/I) in Dual Inlet mode and 1500 M/I in Continuous Flow mode. It has a system stability of < 10 ppm and an effective magnetic detection radius of 191 nm. It has a mass range of 1 - 80 Dalton at 3 kV.