http://lod.bco-dmo.org/id/dataset/1000740
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
2026-06-10
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved iodine speciation depth profile measurements from Siders Pond, Falmouth, Massachusetts, USA, Jul 2020 to Jul 2021
2026-06-10
publication
2026-06-10
revision
BCO-DMO Linked Data URI
2026-06-10
creation
http://lod.bco-dmo.org/id/dataset/1000740
Dalton Hardisty
Michigan State University
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: Hardisty, D. (2026) Dissolved iodine speciation depth profile measurements from Siders Pond, Falmouth, Massachusetts, USA, Jul 2020 to Jul 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-06-10 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/1000740 [access date]
Siders Pond iodine temporal depth profiles (2020-2021) Dataset Description: Methods and Sampling: <p>The samples were collected at discrete depth intervals at a single location within the pond. The samples were collected at temporal intervals intended to understand seasonal changes in pond chemistry. Samples collected for iodine analyses were filtered at 0.2µm with Sterivex filters and collected in 125ml or 60ml amber Nalgene bottles and were frozen immediately afterwards for iodine preservation (Campos, 1997). Iodine speciation analyses occurred within 1 year of sampling, mostly much sooner.</p>
<p>Glass columns for separating iodine species were washed by ultra-pure water produced from the Milli-Q<sup>®</sup> water purification system, followed by packing with PYREX glass wool and 1ml of Bio-rad AG <sup>® </sup>1-X8 anion exchange resin. During the chromatography procedure, the I<sup>-</sup> fraction is specifically adsorbed onto the surface of the resin and eluted following the addition of a 2M HNO<sub>3</sub> (Fisher Scientific, TraceMetal<sup>TM</sup> Grade)-18% (v/v) Tetramethylammonium hydroxide (TMAH, Fisher Scientific) solution. The eluent containing IO<sub>3</sub><sup>-</sup> and DOI fractions were collected separately during the elution steps prior to the I<sup>-</sup> collection, followed by an acidification (pH &lt;2) and reduction step which converts iodine to I<sup>-</sup> by the addition of concentrated hydrochloric acid (HCl, Fisher Scientific) and sodium metabisulfite (Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub>, VWR Analytical) (Hardisty et al., 2020). The treated eluent was left overnight for reaction and was processed through the same chromatographic procedure to collect the I<sup>-</sup> derived from the IO<sub>3</sub><sup>-</sup> and DOI fractions. For independent measurement of total dissolved iodine (TI) and as a quality control, a separate split of seawater samples was treated with HCl/ Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub> to reduce iodine completely to I<sup>-</sup> and subsequently processed through the chromatographic method. The eluents from chromatography were collected in Savillex<sup>®</sup> PFA Teflon vials and then diluted 20 times in 0.2M HNO<sub>3</sub>-0.9% TMAH before instrumental analysis. The iodine concentrations were measured using a Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ) using Qtegra software version 2.10.3324.131 in both single-quad (SQ) and triple-quad (TQ) modes with O<sub>2</sub> reaction cell gas.&nbsp;</p>
<p>For quality control, a 200ppb I<sup>-</sup> solution, which was gravimetrically diluted from the Inorganic Ventures© 1000±4ug/ml I<sup>-</sup> ICP-MS standard solution in 1% tetraethyl ammonium (TEA), was&nbsp; processed through chromatography alongside the seawater samples to estimate the yield of I<sup>-</sup>, DOI and TI fractions. Similarly, for estimating the yield of IO<sub>3</sub><sup>-</sup> reduction and column separation, a 200ppb KIO<sub>3</sub> solution dissolved from gravimetrically weighed solid KIO<sub>3</sub> powder (Fisher Science Education) was reduced and chromatographically processed. Yields from standards were applied to corrections for unknown samples. For monitoring contamination, ultra-pure water was processed through the columns. Among each set of seawater samples (11 samples) which were processed at the same time, one of them was randomly selected as a replicate.&nbsp;</p>
<p>The eluents from the chromatography were collected in Savillex PFA Teflon vials and then diluted 20 times (0.2M HNO<sub>3</sub>-0.9% TMAH) before instrumental analysis. The iodine concentrations were measured using a Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ) using Qtegra software version 2.10.3324.131 in both single-quad (SQ) and triple-quad (TQ) mode with O<sub>2</sub> reaction cell gas. The samples were introduced into the ICP-MS via a Teledyne Cetac ASX-520 autosampler. We used 5ppb internal standard solution diluted from 1001±3ug/ml indium (In) in 2% HNO<sub>3</sub>, 999±5ug/ml Rhodium (Rh) in 15% HCl, and 1000±4ug/ml Cesium 0.1% HNO<sub>3</sub> (Cs) elemental standards from Inorganic Ventures© to calibrate the intensity of iodine and to correct for instrumental drift during the analytical run. The internal standard was either spiked into each sample or was introduced into the ICP-MS after being mixed with sample within an inline mixing chamber. Detection limits for samples were determined as 10 nmol/kg iodine.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1924236 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1924236
onGoing
Dalton Hardisty
Michigan State University
(517) 353-5744
288 Farm Lane, Room 207
East Lansing
MI
488242600
US
hardist1@msu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
sample_ID
station_number
depth
iodide_concentration_nM
iodate_concentration_nM
iodate_concentration_nM_flag
DOI_concentration_nM
DOI_concentration_nM_flag
Total_I_concentration_nM
ISO_DateTime_collected_UTC
Latitude
Longitude
Teledyne Cetac ASX-520 autosampler
Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ)
theme
None, User defined
sample identification
station
depth
iodide, iodine anion (I-)
iodate (IO3-)
quality flag
dissolved organic iodine (DOI)
iodine total
ISO_DateTime_UTC
latitude
longitude
featureType
BCO-DMO Standard Parameters
Laboratory Autosampler
Thermo Fisher Scientific iCAP TQ inductively coupled plasma 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: Manganese Cycling and Coupling Across Redox Boundaries within Stratified Basins of the Baltic Sea
https://osprey.bco-dmo.org/project/929160
Collaborative Research: Manganese Cycling and Coupling Across Redox Boundaries within Stratified Basins of the Baltic Sea
<p><em>NSF Award Abstract:</em><br />
The trace element manganese (Mn) is distributed widely throughout the global ocean where it cycles among three dominant oxidation states. Manganese in the higher oxidation states is highly reactive and thereby influences the cycling of nearly all other elemental cycles, including those of oxygen and nitrogen. The intermediate Mn species has only recently become recognized as an abundant component of the Mn pool, presenting now a previously unrecognized factor that may control the chemistry of the ocean. The Baltic Sea contains high Mn concentrations and preliminary investigations have pointed to the presence of an operationally defined "reactive" form of Mn but the composition and consequence of this Mn pool are unknown. This research will explore the cycling of Mn within the Baltic Sea enabled by an established collaboration with the Leibniz Institute for Baltic Sea Research in Warnemunde, Germany. By coupling field measurements and targeted shipboard incubations, this study will shed light on the processes controlling the Mn cycle and its link to the oxygen, iodine, and nitrogen cycles. This project will educate several undergraduate and graduate students and promote scientific exchange between research groups within the United States and Germany. Further, outreach efforts associated with this research will continue an existing collaboration between the PIs and the Boston Green Academy in South Boston to introduce high school students to chemical oceanography, and in particular biogeochemistry.</p>
<p>Manganese (Mn) is intricately linked to nearly all elemental cycles, and yet we know little about the processes governing its redox cycling within natural systems. Over the past decade a number of key scientific discoveries have provided greater insight into the diversity of processes and mechanisms involved in Mn redox cycling and introduced Mn(III) ligand complexes as important components of the dissolved Mn pool. The Baltic Sea is one of the most well studied stratified marine systems and reactive Mn has been implicated as a key factor in the formation and maintenance of suboxic zones. Thus, the goal of this research is to explore the cycling and elemental coupling of Mn within stratified basins of the Baltic Sea. The PIs predict that reactive Mn, as Mn(III) ligand complexes and Mn oxide particles, is a primary control on the redox landscape of stratified marine waters, particularly at redox boundaries and within the suboxic zone. The PIs propose fieldwork in a local permanently stratified brackish pond to refine experimental procedures followed by two cruises to suboxic basins in the Baltic Sea enabled by an established collaboration with the Leibniz Institute for Baltic Sea Research in Warnemunde. Field measurements will be obtained using a combination of in situ sensors and ship/lab-based instrumentation at several Baltic Sea sites to define the distribution of Mn species and the rates of Mn redox transformations spanning the redoxcline along with a suite of chemical information. Further, a matrix of shipboard incubations will be conducted to constrain the underlying (a)biotic processes responsible for the observed Mn profiles. Specifically, across oxygen and Mn gradients spanning the redoxcline, the PIs will interrogate the link between the Mn cycle and iodine and nitrogen species, which will ultimately help constrain current gaps in the mass balance of these elements in Baltic Sea models.</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>
MnIONS
largerWorkCitation
project
eng; USA
oceans
-70.6239537
-70.6193716
41.5465985
41.551793
2020-07-17
2021-07-27
Baltic Sea
0
BCO-DMO catalogue of parameters from Dissolved iodine speciation depth profile measurements from Siders Pond, Falmouth, Massachusetts, USA, Jul 2020 to Jul 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/1000745.rdf
Name: sample_ID
Units: unitless
Description: <p>Sample ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000746.rdf
Name: station_number
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000747.rdf
Name: depth
Units: meters
Description: <p>Depth of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000749.rdf
Name: iodide_concentration_nM
Units: nanomole/kg
Description: <p>Iodide concentration; 10 nanomole/kg detection limit</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000750.rdf
Name: iodate_concentration_nM
Units: nanomole/kg
Description: <p>Iodate concentration; 10 nanomole/kg detection limit</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000751.rdf
Name: iodate_concentration_nM_flag
Units: unitless
Description: <p>Flag indicating the iodate concentration is <10</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000752.rdf
Name: DOI_concentration_nM
Units: nanomole/kg
Description: <p>Dissolved organic iodine concentration; 10 nanomole/kg detection limit</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000753.rdf
Name: DOI_concentration_nM_flag
Units: unitless
Description: <p>Flag indicating the DOI concentration is <10</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000754.rdf
Name: Total_I_concentration_nM
Units: nanomole/kg
Description: <p>Total iodine concentration; 10 nanomole/kg detection limit</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000755.rdf
Name: ISO_DateTime_collected_UTC
Units: unitless
Description: <p>Datetime of sampling event, UTC</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000757.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample, positive is North</p>
http://lod.bco-dmo.org/id/dataset-parameter/1000759.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample, negative is West</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/1000740/data/download
download
onLine
dataset
<p>The samples were collected at discrete depth intervals at a single location within the pond. The samples were collected at temporal intervals intended to understand seasonal changes in pond chemistry. Samples collected for iodine analyses were filtered at 0.2µm with Sterivex filters and collected in 125ml or 60ml amber Nalgene bottles and were frozen immediately afterwards for iodine preservation (Campos, 1997). Iodine speciation analyses occurred within 1 year of sampling, mostly much sooner.</p>
<p>Glass columns for separating iodine species were washed by ultra-pure water produced from the Milli-Q<sup>®</sup> water purification system, followed by packing with PYREX glass wool and 1ml of Bio-rad AG <sup>® </sup>1-X8 anion exchange resin. During the chromatography procedure, the I<sup>-</sup> fraction is specifically adsorbed onto the surface of the resin and eluted following the addition of a 2M HNO<sub>3</sub> (Fisher Scientific, TraceMetal<sup>TM</sup> Grade)-18% (v/v) Tetramethylammonium hydroxide (TMAH, Fisher Scientific) solution. The eluent containing IO<sub>3</sub><sup>-</sup> and DOI fractions were collected separately during the elution steps prior to the I<sup>-</sup> collection, followed by an acidification (pH &lt;2) and reduction step which converts iodine to I<sup>-</sup> by the addition of concentrated hydrochloric acid (HCl, Fisher Scientific) and sodium metabisulfite (Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub>, VWR Analytical) (Hardisty et al., 2020). The treated eluent was left overnight for reaction and was processed through the same chromatographic procedure to collect the I<sup>-</sup> derived from the IO<sub>3</sub><sup>-</sup> and DOI fractions. For independent measurement of total dissolved iodine (TI) and as a quality control, a separate split of seawater samples was treated with HCl/ Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub> to reduce iodine completely to I<sup>-</sup> and subsequently processed through the chromatographic method. The eluents from chromatography were collected in Savillex<sup>®</sup> PFA Teflon vials and then diluted 20 times in 0.2M HNO<sub>3</sub>-0.9% TMAH before instrumental analysis. The iodine concentrations were measured using a Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ) using Qtegra software version 2.10.3324.131 in both single-quad (SQ) and triple-quad (TQ) modes with O<sub>2</sub> reaction cell gas.&nbsp;</p>
<p>For quality control, a 200ppb I<sup>-</sup> solution, which was gravimetrically diluted from the Inorganic Ventures© 1000±4ug/ml I<sup>-</sup> ICP-MS standard solution in 1% tetraethyl ammonium (TEA), was&nbsp; processed through chromatography alongside the seawater samples to estimate the yield of I<sup>-</sup>, DOI and TI fractions. Similarly, for estimating the yield of IO<sub>3</sub><sup>-</sup> reduction and column separation, a 200ppb KIO<sub>3</sub> solution dissolved from gravimetrically weighed solid KIO<sub>3</sub> powder (Fisher Science Education) was reduced and chromatographically processed. Yields from standards were applied to corrections for unknown samples. For monitoring contamination, ultra-pure water was processed through the columns. Among each set of seawater samples (11 samples) which were processed at the same time, one of them was randomly selected as a replicate.&nbsp;</p>
<p>The eluents from the chromatography were collected in Savillex PFA Teflon vials and then diluted 20 times (0.2M HNO<sub>3</sub>-0.9% TMAH) before instrumental analysis. The iodine concentrations were measured using a Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ) using Qtegra software version 2.10.3324.131 in both single-quad (SQ) and triple-quad (TQ) mode with O<sub>2</sub> reaction cell gas. The samples were introduced into the ICP-MS via a Teledyne Cetac ASX-520 autosampler. We used 5ppb internal standard solution diluted from 1001±3ug/ml indium (In) in 2% HNO<sub>3</sub>, 999±5ug/ml Rhodium (Rh) in 15% HCl, and 1000±4ug/ml Cesium 0.1% HNO<sub>3</sub> (Cs) elemental standards from Inorganic Ventures© to calibrate the intensity of iodine and to correct for instrumental drift during the analytical run. The internal standard was either spiked into each sample or was introduced into the ICP-MS after being mixed with sample within an inline mixing chamber. Detection limits for samples were determined as 10 nmol/kg iodine.</p>
Specified by the Principal Investigator(s)
<p>Data were processed using Excel.</p>
Specified by the Principal Investigator(s)
- Loaded data from "SidersPond_iodine_depth_profiles.xlsx" (sheet 1) treating all values as strings, with "", "nd", and "N/A" set as missing values
- Combined ISO_DateTime_collected_UTC (format %m-%d-%y) and UTC_Time (%H:%M) into a single ISO 8601 datetime field ISO_DateTime_collected_UTC (output format %Y-%m-%dT%H:%MZ, type datetime)
- Deleted UTC_Time column
- Extracted non-numeric values from iodate_concentration_nM and DOI_concentration_nM into new flag columns iodate_concentration_nM_flag and DOI_concentration_nM_flag; original columns set to None where non-numeric
- Renamed column Total I_concentration_nM to Total_I_concentration_nM and depth_m to depth to remove units from parameter names to align with BCO-DMO naming guidance
- Output written to 1000740_v1_siders_pond_iodine.csv
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
Teledyne Cetac ASX-520 autosampler
Teledyne Cetac ASX-520 autosampler
PI Supplied Instrument Name: Teledyne Cetac ASX-520 autosampler PI Supplied Instrument Description:The samples were introduced into the ICP-MS via a Teledyne Cetac ASX-520 autosampler. Instrument Name: Laboratory Autosampler Instrument Short Name: Instrument Description: Laboratory apparatus that automatically introduces one or more samples with a predetermined volume or mass into an analytical instrument.
Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ)
Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ)
PI Supplied Instrument Name: Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ) PI Supplied Instrument Description:The iodine concentrations were measured using a Thermo Scientific iCAP Q triple-quadrupole inductively coupled plasma mass spectrometer (ICP-MS-TQ) using Qtegra software version 2.10.3324.131 in both single-quad (SQ) and triple-quad (TQ) modes with O2 reaction cell gas. Instrument Name: Thermo Fisher Scientific iCAP TQ inductively coupled plasma mass spectrometer Instrument Short Name:iCAP TQ ICP-MS Instrument Description: A benchtop triple quadrupole (TQ) inductively coupled plasma mass spectrometer (ICP-MS) with a four channel peristaltic pump, three plasma gas flow controllers, and four QCell mass flow controllers. The iCAP TQ utilises triple quadrupole technology which allows the analyte signal to be isolated from interferences, enabling the analysis of complex or high-matrix samples. The high frequency (4 MHz) quadrupole mass analyser has pre and post filters for isolation of wanted ions. The instrument features Peltier cooled high purity quartz or perfluoroalkoxy alkane (PFA), and low volume, baffled cyclonic or double pass spray chambers to efficiently filter out larger aerosol droplets for improved plasma stability. A reaction finder method development assistant aids easy method development. The plasma system is designed to rapidly adapt to changing matrices and provide robustness for challenging samples such as highly volatile organic solvents. The argon ICP ion source has a digital, solid state radiofrequency generator, and dynamic frequency impedance matching the plasma at 27 MHz. The iCAP TQ has applications in trace element analysis of solid or liquid (particularly sediment or sea water) samples. It has a nebuliser default flow rate of 400 uL/min.