http://lod.bco-dmo.org/id/dataset/946741
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
2024-12-26
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Aerosol composition data of ion concentrations (ammonium, nitrate, nitrite, sodium, chloride, magnesium, calcium, potassium, sulfate); and ammonium and nitrate isotope (15N) of atmospheric particulates collected in Hawaii from March 2021 to August 2022
2025-02-13
publication
2025-02-13
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-02-13
publication
https://doi.org/10.26008/1912/bco-dmo.946741.1
Meredith Hastings
Brown University
principalInvestigator
Hayley N. Schiebel
Suffolk 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: MacFarland, A., Hastings, M., Schiebel, H. N. (2025) Aerosol composition data of ion concentrations (ammonium, nitrate, nitrite, sodium, chloride, magnesium, calcium, potassium, sulfate); and ammonium and nitrate isotope (15N) of atmospheric particulates collected in Hawaii from March 2021 to August 2022. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-02-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.946741.1 [access date]
Western Pacific Hawaii Aerosol Data Dataset Description: Methods and Sampling: <p><!--[if gte mso 9]><xml> <o> <o/> </o:OfficeDocumentSettings> </xml><![endif]--><!--[if gte mso 9]><xml> <w> <w>Normal</w:View> <w>0</w:Zoom> <w/> <w/> <w/> <w/> <w>false</w:SaveIfXMLInvalid> <w>false</w:IgnoreMixedContent> <w>false</w:AlwaysShowPlaceholderText> <w/> <w>EN-US</w:LidThemeOther> <w>X-NONE</w:LidThemeAsian> <w>X-NONE</w:LidThemeComplexScript> <w> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> </w:Compatibility> <m> <m/> <m/> <m/> <m/> <m/> <m/> <m/> <m/> <m/> <m/> <m/> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> <w/> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:8.0pt; mso-para-margin-left:0in; line-height:107%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-font-kerning:1.0pt;} </style> <![endif]--></p>
<p>Aerosol sampling was conducted from March 24, 2021 to June 30, 2022. A high-volume aerosol sampler operating at 1,200 L min<sup>-1</sup> with 25 × 20 cm filters was used. Aerosol samples were for seven days for each filter, with a total of 66 samples collected.</p>
<p>We measured for ammonium isotopes (<sup>15</sup>N), and a suite of ion concentrations (calcium (Ca<sup>2+</sup>), magnesium (Mg<sup>2+</sup>), sodium (Na<sup>+</sup>), and potassium (K<sup>+</sup>), Chloride (Cl<sup>-</sup>) and sulfate (SO<sub>4</sub><sup>2-</sup>)). All measurements were conducted at the Department of Earth, Environmental, and Planetary Sciences at Brown University in Providence, RI (USA).</p>
<p>The filter was extracted in a pre-cleaned bottle with ~30 mL of MQ water (exact amounts were recorded via weight) and sonicated for 1 h. After sonication, the solutions were filtered via a vacuum pumped. Samples were frozen then at -20 ◦C until further analyses.</p>
<p>&nbsp;The concentration of ammonium, nitrate, and nitrite were determined colorimetrically (indophenol blue) using a discrete UV–Vis analyzer (Westco Smartchem 200). U.S. EPA Compliant Methods 350.1 (O’Dell, 1993), 353.2 (Revision 2.0), and 354.1 were followed for ammonium, nitrate, and nitrite, respectively. Standard lab protocols were followed, including calibration to standards as well as blanks and in-house quality control measurements.</p>
<p>The azide method (Zhang et al., 2007) was used to complete ammonium (<sup>15</sup>N /<sup>14</sup>N) isotope analyses on a continuous flow isotope ratio mass spectrometer. Values were reported in ‰ relative to standards (IAEA-N<sub>2</sub> and USGS-25).</p>
<p>Concentrations of calcium, magnesium, sodium, potassium, chloride, and sulfate were measured on an Ion Chromatography (IC) instrument (Dionex Integrion HPIC) using suppressed conductivity detection. Anions were determined using a Dionex AS19-4 μm guard (4 × 50 mm) and analytical column (4× 250 mm) with 20 mM KOH as eluent with a flow rate of 1 mL min<sup>-1</sup>. Cations were analyzed using a Dionex CS-16 guard column (5&nbsp;×&nbsp;50&nbsp;mm) analytical column (5&nbsp;×&nbsp;250&nbsp;mm). Eluent of 30&nbsp;mM methane sulfonic acid was used to detect cations with a pump flow rate of 1&nbsp;mL&nbsp;min<sup>−1</sup>. All samples were filtered with 0.20-μm filters before being analyzed. In-house quality control standards were run approximately every six samples.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1851318 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1851318
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1851343 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1851343
completed
Meredith Hastings
Brown University
401-863-3658
324 Brook Street Box 1846
Providence
RI
02912
USA
meredith_hastings@brown.edu
pointOfContact
Hayley N. Schiebel
Suffolk University
617-994-6811
20 Somerset 5th Floor, Rm. 529
Boston
MA
02108-2770
USA
hschiebel@suffolk.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample_ID
Date
Collection_Location
Latitude
Longitude
CollectionPeriod_Hrs
TotalAirVolume_m3
ParticleWeight_g
AmmoniumConcentration_ugPerm3
NitrateConcentration_ugPerm3
SodiumConcentration_ugPerm3
PotassiumConcentration_ugPerm3
MagnesiumConcentration_ugPerm3
CalciumConcentration_ugPerm3
ChlorideConcentration_ugPerm3
SulfateConcentration_ugPerm3
Delta15N_Ammonium
Delta15N_Nitrate
High-volume aerosol sampler operating at 1,200 L min-1 with 25 × 20 cm filters.
Discrete UV–Vis analyzer (Westco Smartchem 200)
Ion Chromatography (IC) (Dionex Integrion HPIC)
Continuous Flow Isotope Ratio Mass Spectrometer
theme
None, User defined
sample identification
date
station
latitude
longitude
incubation time or duration
sample_volume
weight
Ammonium
Nitrate
Sodium
potassium
Magnesium
Calcium
chloride
sulfate
d15N_NH4
d15N_NO3
featureType
BCO-DMO Standard Parameters
Aerosol Sampler
Discrete Analyzer
Ion Chromatograph
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: Characterization of Reactive Nitrogen in The North Pacific Atmosphere
https://osprey.bco-dmo.org/project/910824
Collaborative Research: Characterization of Reactive Nitrogen in The North Pacific Atmosphere
<p><strong>NSF Award Abstract:</strong><br />
Nitrogen is an essential element for life, and its availability can limit the growth of phytoplankton in the surface waters of the oceans. One source of nitrogen to surface waters is deposition from the atmosphere, which is the result of reactive nitrogen emissions from both human (anthropogenic) activities and natural processes. Anthropogenic nitrogen emissions to the atmosphere and nitrogen deposition to the oceans have increased exponentially since preindustrial times. In fact, global modeling studies have suggested that as much as 80% of total nitrogen deposition to the oceans is anthropogenic in origin, and that the magnitude of input to the global oceans rivals estimates of biological nitrogen fixation. The impacts associated with this increased nitrogen deposition are clear in both terrestrial and coastal systems, but the implications for open ocean biogeochemistry are less well studied. Recent work in the North Pacific Ocean (NPO) has suggested that increased nitrogen due to anthropogenic atmospheric deposition is detectable even in the open ocean, while other work can explain nutrient dynamics based upon natural biological and physical processes. The investigators propose to study the influence of both anthropogenic and natural sources on the deposition of nitrogen (as nitrate, ammonium, and organic nitrogen) in the NPO. This will be based on collection of aerosol and rainwater samples year-round at two sites: (1) Chang-Dao Island, China where they expect high anthropogenic nitrogen inputs; and (2) Oahu, Hawaii where they expect marine sources to dominate. They will also collect ship-based samples in the marine boundary layer via already planned short-term research cruises in each season. In addition to the scientific outcomes, this project will provide for human resources and professional development of the team members (faculty members, a graduate student, undergraduate student, and technicians), advance international collaborations, and contribute to education and public outreach. Identifying the sources of nitrogen deposition to the open ocean is crucial for understanding anthropogenic impacts on biogeochemical cycles. A primary question is, is nitrogen deposition the result of external, anthropogenic processes or does it represent recycled nitrogen from the ocean's point of view? The specific objectives of this project are to: characterize the atmospheric composition and sources of inorganic (ammonium and nitrate) and organic nitrogen with an emphasis on seasonality; diagnose the influence of air-sea exchange versus anthropogenic sources of nitrogen on atmospheric deposition; and determine the isotopic composition of gaseous and particulate inorganic nitrogen in the marine boundary layer via ship-based sample collections in the NPO. Using concentration and isotopic measurements of reactive nitrogen species, in addition to transport and chemical box modeling, the study aims to characterize nitrogen deposition in two locations with very different source influences. This study will provide the first comprehensive, seasonal analysis of the isotopic values of reactive nitrogen species in the NPO atmosphere where nitrogen deposition is considered intense. Ultimately this project will lead to a better understanding of how anthropogenic changes in the atmospheric nitrogen cycle may influence the biogeochemistry of the surface ocean as well as the composition of the marine atmosphere.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>
North Pacific Atmos
largerWorkCitation
project
eng; USA
oceans
-157.67
-157.67
21.32
21.32
2021-03-24
2022-06-30
coastal China atmosphere, Northwestern Pacific waters and atmos, Hawaii atmosphere
0
BCO-DMO catalogue of parameters from Aerosol composition data of ion concentrations (ammonium, nitrate, nitrite, sodium, chloride, magnesium, calcium, potassium, sulfate); and ammonium and nitrate isotope (15N) of atmospheric particulates collected in Hawaii from March 2021 to August 2022
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/953432.rdf
Name: Sample_ID
Units: unitless
Description: <p>Sample number id of atmospheric particulate sampled</p>
http://lod.bco-dmo.org/id/dataset-parameter/953433.rdf
Name: Date
Units: unitless
Description: <p>The sampling date in ISO format yyyy-mm-dd</p>
http://lod.bco-dmo.org/id/dataset-parameter/953434.rdf
Name: Collection_Location
Units: units
Description: <p>Location name of sampling site: Oahu, Kaena, Kahe, Aloha</p>
http://lod.bco-dmo.org/id/dataset-parameter/953435.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Sampling latitude, south is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/953436.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Sampling longitude, west is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/953437.rdf
Name: CollectionPeriod_Hrs
Units: hours (hrs)
Description: <p>Length of sampling time in format hh</p>
http://lod.bco-dmo.org/id/dataset-parameter/953438.rdf
Name: TotalAirVolume_m3
Units: Liter (L)
Description: <p>Total air volume during the sampling</p>
http://lod.bco-dmo.org/id/dataset-parameter/953439.rdf
Name: ParticleWeight_g
Units: milligram (mg)
Description: <p>Atmospheric particulates weight of each samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/953440.rdf
Name: AmmoniumConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Ammonium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953441.rdf
Name: NitrateConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Nitrate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953442.rdf
Name: SodiumConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Sodium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953443.rdf
Name: PotassiumConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Potassium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953444.rdf
Name: MagnesiumConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Magnesium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953445.rdf
Name: CalciumConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Calcium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953446.rdf
Name: ChlorideConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Chloride concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953447.rdf
Name: SulfateConcentration_ugPerm3
Units: micrograms per cubic meter (µg/m3)
Description: <p>Sulfate concenration</p>
http://lod.bco-dmo.org/id/dataset-parameter/953448.rdf
Name: Delta15N_Ammonium
Units: parts per thousand (permil) (‰)
Description: <p>Nitrogen isotope ratio (15N/14N) of atmospheric ammonium (NH4+).</p>
http://lod.bco-dmo.org/id/dataset-parameter/953449.rdf
Name: Delta15N_Nitrate
Units: parts per thousand (permil) (‰)
Description: <p>Nitrogen isotope ratio (15N/14N) of atmospheric nitrate (NO3).</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
7231
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/86cdf1d8-1cd6-4d1e-9f4e-02886fe3d292/content
download
https://doi.org/10.26008/1912/bco-dmo.946741.1
download
onLine
dataset
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<p>Aerosol sampling was conducted from March 24, 2021 to June 30, 2022. A high-volume aerosol sampler operating at 1,200 L min<sup>-1</sup> with 25 × 20 cm filters was used. Aerosol samples were for seven days for each filter, with a total of 66 samples collected.</p>
<p>We measured for ammonium isotopes (<sup>15</sup>N), and a suite of ion concentrations (calcium (Ca<sup>2+</sup>), magnesium (Mg<sup>2+</sup>), sodium (Na<sup>+</sup>), and potassium (K<sup>+</sup>), Chloride (Cl<sup>-</sup>) and sulfate (SO<sub>4</sub><sup>2-</sup>)). All measurements were conducted at the Department of Earth, Environmental, and Planetary Sciences at Brown University in Providence, RI (USA).</p>
<p>The filter was extracted in a pre-cleaned bottle with ~30 mL of MQ water (exact amounts were recorded via weight) and sonicated for 1 h. After sonication, the solutions were filtered via a vacuum pumped. Samples were frozen then at -20 ◦C until further analyses.</p>
<p>&nbsp;The concentration of ammonium, nitrate, and nitrite were determined colorimetrically (indophenol blue) using a discrete UV–Vis analyzer (Westco Smartchem 200). U.S. EPA Compliant Methods 350.1 (O’Dell, 1993), 353.2 (Revision 2.0), and 354.1 were followed for ammonium, nitrate, and nitrite, respectively. Standard lab protocols were followed, including calibration to standards as well as blanks and in-house quality control measurements.</p>
<p>The azide method (Zhang et al., 2007) was used to complete ammonium (<sup>15</sup>N /<sup>14</sup>N) isotope analyses on a continuous flow isotope ratio mass spectrometer. Values were reported in ‰ relative to standards (IAEA-N<sub>2</sub> and USGS-25).</p>
<p>Concentrations of calcium, magnesium, sodium, potassium, chloride, and sulfate were measured on an Ion Chromatography (IC) instrument (Dionex Integrion HPIC) using suppressed conductivity detection. Anions were determined using a Dionex AS19-4 μm guard (4 × 50 mm) and analytical column (4× 250 mm) with 20 mM KOH as eluent with a flow rate of 1 mL min<sup>-1</sup>. Cations were analyzed using a Dionex CS-16 guard column (5&nbsp;×&nbsp;50&nbsp;mm) analytical column (5&nbsp;×&nbsp;250&nbsp;mm). Eluent of 30&nbsp;mM methane sulfonic acid was used to detect cations with a pump flow rate of 1&nbsp;mL&nbsp;min<sup>−1</sup>. All samples were filtered with 0.20-μm filters before being analyzed. In-house quality control standards were run approximately every six samples.</p>
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* Adjusted parameter names to comply with database requirements
* Added sampling latitude and longitude to dataset
* Converted date to ISO notation (Y-m-d)
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High-volume aerosol sampler operating at 1,200 L min-1 with 25 × 20 cm filters.
High-volume aerosol sampler operating at 1,200 L min-1 with 25 × 20 cm filters.
PI Supplied Instrument Name: High-volume aerosol sampler operating at 1,200 L min-1 with 25 × 20 cm filters. Instrument Name: Aerosol Sampler Instrument Short Name: Instrument Description: A device that collects a sample of aerosol (dry particles or liquid droplets) from the atmosphere. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/13/
Discrete UV–Vis analyzer (Westco Smartchem 200)
Discrete UV–Vis analyzer (Westco Smartchem 200)
PI Supplied Instrument Name: Discrete UV–Vis analyzer (Westco Smartchem 200) PI Supplied Instrument Description:Discrete UV–Vis analyzer (Westco Smartchem 200): for ammonium, nitrate, and nitrite concentrations. Instrument Name: Discrete Analyzer Instrument Short Name:Discrete Analyzer Instrument Description: Discrete analyzers utilize discrete reaction wells to mix and develop the colorimetric reaction, allowing for a wide variety of assays to be performed from one sample. These instruments are ideal for drinking water, wastewater, soil testing, environmental and university or research applications where multiple assays and high throughput are required.
Ion Chromatography (IC) (Dionex Integrion HPIC)
Ion Chromatography (IC) (Dionex Integrion HPIC)
PI Supplied Instrument Name: Ion Chromatography (IC) (Dionex Integrion HPIC) PI Supplied Instrument Description:Ion Chromatography (IC) (Dionex Integrion HPIC): to measure chloride, sulfate, calcium, magnesium, sodium, and potassium concentrations. Instrument Name: Ion Chromatograph Instrument Short Name:Ion Chromatograph Instrument Description: Ion chromatography is a form of liquid chromatography that measures concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. Ion chromatographs are able to measure concentrations of major anions, such as fluoride, chloride, nitrate, nitrite, and sulfate, as well as major cations such as lithium, sodium, ammonium, potassium, calcium, and magnesium in the parts-per-billion (ppb) range. (from http://serc.carleton.edu/microbelife/research_methods/biogeochemical/ic.html)
Continuous Flow Isotope Ratio Mass Spectrometer
Continuous Flow Isotope Ratio Mass Spectrometer
PI Supplied Instrument Name: Continuous Flow Isotope Ratio Mass Spectrometer PI Supplied Instrument Description:Continuous Flow Isotope Ratio Mass Spectrometer: for ammonium isotope values. Instrument Name: Mass Spectrometer Instrument Short Name:Mass Spec Instrument Description: General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/