http://lod.bco-dmo.org/id/dataset/788727
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
2020-01-28
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Mercury stable isotope values for precipitation collected around Station ALOHA from 2005 to 2014
2020-02-21
publication
2020-02-21
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-02-24
publication
https://doi.org/10.1575/1912/bco-dmo.788727.1
Joel D. Blum
University of Michigan
principalInvestigator
Claudia R. Benitez-Nelson
University of South Carolina
principalInvestigator
Jeffrey C. Drazen
University of Hawaiʻi at Mānoa
principalInvestigator
Brian N. Popp
University of Hawaiʻi at Mānoa
principalInvestigator
Kanesa Seraphin
University of Hawai'i
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: Blum, J., Benitez-Nelson, C., Drazen, J., Popp, B., Seraphin, K. (2020) Mercury stable isotope values for precipitation collected around Station ALOHA from 2005 to 2014. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-02-21 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.788727.1 [access date]
Mercury stable isotope values for precipitation Dataset Description: <p>This dataset contains the mercury stable isotope ratios collected in precipitation during R/V Kilo Moana cruises around Station ALOHA.&nbsp;For more information about the ALOHA observatory see: <a href="http://aco-ssds.soest.hawaii.edu/" target="_blank">http://aco-ssds.soest.hawaii.edu/</a>. These data were published in Motta et al., (2019) with supporting information.</p> Methods and Sampling: <p>Open ocean precipitation was collected during the summer cruise using a manual collection method. The samples from the Island of Hawaii were collected in 2005 at the Hakalau Wildlife Refuge and at the Nature Conservancy Ka’u Preserve. Procedural field blanks were collected periodically during the sampling campaign using 1L of de-ionized water.</p>
<p>After collection all the samples were oxidized with 1% BrCl (wt/v) and allowed to react with the water sample in dark, refrigerated storage for a minimum of one month. Then, the samples were analyzed for THg concentrations using cold vapor - atomic fluorescence spectrophotometry.</p>
<p>For THg isotope determination the oxidized precipitation samples were subsequently reduced, purged and trapped into 1% KMnO4 solution for isotope analysis. The 1% KMnO4 solution was analyzed for Hg stable isotope composition using a multiple collector inductively coupled plasma mass spectrometer.</p>
<p>All the methods are detailed in Motta et al., (2019).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1433846 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1433846
completed
Joel D. Blum
University of Michigan
734-615-3242
1100 North University Ave
Ann Arbor
MI
48109
USA
jdblum@umich.edu
pointOfContact
Claudia R. Benitez-Nelson
University of South Carolina
803-777-0525
School of the Earth, Ocean and Environment 701 Sumter Street
Columbia
SC
29208
USA
benitezn@mailbox.sc.edu
pointOfContact
Jeffrey C. Drazen
University of Hawaiʻi at Mānoa
808-956-6567
Department of Oceanography, SOEST 1000 Pope Road
Honolulu
HI
96822
USA
jdrazen@hawaii.edu
pointOfContact
Brian N. Popp
University of Hawaiʻi at Mānoa
808-956-6206
Department of Earth Sciences 1680 East-West Road
Honolulu
HI
96822
USA
popp@hawaii.edu
pointOfContact
Kanesa Seraphin
University of Hawai'i
808-225-1753
UH Sea Grant Center for Marine Science Education, University of Hawaii 2525 Correa Road
Honolulu
HI
96822
USA
kanesa@hawaii.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Location
Date
Sample_ID
Total_Hg_concentration
d202Hg
D199Hg
D201Hg
D200Hg
D204Hg
cold vapor - atomic fluorescence spectrophotometry
MC-ICP-MS
theme
None, User defined
site
date
sample identification
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
Cold Vapor Atomic Fluorescence Spectrophotometer
Inductively Coupled Plasma Mass Spectrometer
instrument
BCO-DMO Standard Instruments
KM1418
service
Deployment Activity
Central North Pacific, Station ALOHA
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.
Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry
https://osprey.bco-dmo.org/project/560580
Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry
<p><em>NSF award abstract:</em><br />
Mercury is a pervasive trace element that exists in several states in the marine environment, including monomethylmercury (MMHg), a neurotoxin that bioaccumulates in marine organisms and poses a human health threat. Understanding the fate of mercury in the ocean and resulting impacts on ocean food webs requires understanding the mechanisms controlling the depths at which mercury chemical transformations occur. Preliminary mercury analyses on nine species of marine fish from the North Pacific Ocean indicated that intermediate waters are an important entry point for MMHg into open ocean food webs. To elucidate the process controlling this, researchers will examine mercury dynamics in regions with differing vertical dissolved oxygen profiles, which should influence depths of mercury transformation. Results of the study will aid in a better understanding of the pathways by which mercury enters the marine food chain and can ultimately impact humans. This project will provide training for graduate and undergraduate students, and spread awareness on oceanic mercury through public outreach and informal science programs.</p>
<p>Mercury isotopic variations can provide insight into a wide variety of environmental processes. Isotopic compositions of mercury display mass-dependent fractionation (MDF) during most biotic and abiotic chemical reactions and mass-independent fractionation (MIF) during photochemical radical pair reactions. The unusual combination of MDF and MIF can provide information on reaction pathways and the biogeochemical history of mercury. Results from preliminary research provide strong evidence that net MMHg formation occurred below the surface mixed layer in the pycnocline and suggested that MMHg in low oxygen intermediate waters is an important entry point for mercury into open ocean food webs. These findings highlight the critical need to understand how MMHg levels in marine biota will respond to changes in atmospheric mercury emissions, deposition of inorganic mercury to the surface ocean, and hypothesized future expansion of oxygen minimum zones. Using field collections across ecosystems with contrasting biogeochemistry and mercury isotope fractionation experiments researchers will fill key knowledge gaps in mercury biogeochemistry. Results of the proposed research will enable scientists to assess the biogeochemical controls on where in the water column mercury methylation and demethylation likely occur.</p>
<p><em>Related background publication with supplemental data section:</em><br />
Joel D. Blum, Brian N. Popp, Jeffrey C. Drazen, C. Anela Choy & Marcus W. Johnson. 2013. Methylmercury production below the mixed layer in the North Pacific Ocean. Nature Geoscience 6, 879–884. <a href="https://www.nature.com/articles/ngeo1918" target="_blank">doi:10.1038/ngeo1918</a></p>
Hg_Biogeochemistry
largerWorkCitation
project
eng; USA
oceans
Central North Pacific, Station ALOHA
-158
-158
22.75
22.75
2005-01-01
2014-09-02
Pacific Subtropical Gyre, Station ALOHA 22.75N 158W; equatorial Pacific (10N 155W, 5N 155W)
0
BCO-DMO catalogue of parameters from Mercury stable isotope values for precipitation collected around Station ALOHA from 2005 to 2014
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/788744.rdf
Name: Location
Units: unitless
Description: <p>Sampling location</p>
http://lod.bco-dmo.org/id/dataset-parameter/788745.rdf
Name: Date
Units: unitless
Description: <p>Sampling date (UTC); format: yyyymmdd</p>
http://lod.bco-dmo.org/id/dataset-parameter/788746.rdf
Name: Sample_ID
Units: unitless
Description: <p>Sample ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/788747.rdf
Name: Total_Hg_concentration
Units: nanograms per liter (ng/L)
Description: <p>Total Hg concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/788748.rdf
Name: d202Hg
Units: per mil (‰)
Description: <p>Stable isotope ratio; δ202Hg</p>
http://lod.bco-dmo.org/id/dataset-parameter/788749.rdf
Name: D199Hg
Units: per mil (‰)
Description: <p>Stable isotope ratio; Δ199Hg</p>
http://lod.bco-dmo.org/id/dataset-parameter/788750.rdf
Name: D201Hg
Units: per mil (‰)
Description: <p>Stable isotope ratio; Δ201Hg</p>
http://lod.bco-dmo.org/id/dataset-parameter/788751.rdf
Name: D200Hg
Units: per mil (‰)
Description: <p>Stable isotope ratio; Δ200Hg</p>
http://lod.bco-dmo.org/id/dataset-parameter/788752.rdf
Name: D204Hg
Units: per mil (‰)
Description: <p>Stable isotope ratio; Δ204Hg</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
788
https://darchive.mblwhoilibrary.org/bitstream/1912/25424/1/dataset-788727_hg-isotopes-precipitation__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.788727.1
download
onLine
dataset
<p>Open ocean precipitation was collected during the summer cruise using a manual collection method. The samples from the Island of Hawaii were collected in 2005 at the Hakalau Wildlife Refuge and at the Nature Conservancy Ka’u Preserve. Procedural field blanks were collected periodically during the sampling campaign using 1L of de-ionized water.</p>
<p>After collection all the samples were oxidized with 1% BrCl (wt/v) and allowed to react with the water sample in dark, refrigerated storage for a minimum of one month. Then, the samples were analyzed for THg concentrations using cold vapor - atomic fluorescence spectrophotometry.</p>
<p>For THg isotope determination the oxidized precipitation samples were subsequently reduced, purged and trapped into 1% KMnO4 solution for isotope analysis. The 1% KMnO4 solution was analyzed for Hg stable isotope composition using a multiple collector inductively coupled plasma mass spectrometer.</p>
<p>All the methods are detailed in Motta et al., (2019).</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
cold vapor - atomic fluorescence spectrophotometry
cold vapor - atomic fluorescence spectrophotometry
PI Supplied Instrument Name: cold vapor - atomic fluorescence spectrophotometry Instrument Name: Cold Vapor Atomic Fluorescence Spectrophotometer Instrument Short Name:CVAFS Instrument Description: A Cold Vapor Atomic Fluorescent Spectrophotometer (CVAFS) is an instrument used for quantitative determination of volatile heavy metals, such as mercury. CVAFS make use of the characteristic of mercury that allows vapor measurement at room temperature. Mercury atoms in an inert carrier gas are excited by a collimated UV light source at a particular wavelength. As the atoms return to their non-excited state they re-radiate their absorbed energy at the same wavelength. The fluorescence may be detected using a photomultiplier tube or UV photodiode.
MC-ICP-MS
MC-ICP-MS
PI Supplied Instrument Name: MC-ICP-MS PI Supplied Instrument Description:multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS; Nu instruments) Instrument Name: Inductively Coupled Plasma Mass Spectrometer Instrument Short Name:ICP Mass Spec Instrument Description: An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/
Cruise: KM1418
KM1418
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1418
Jeffrey C. Drazen
University of Hawaiʻi at Mānoa
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel