Dataset: Dissolved Trace Metal Concentrations from Depth Profiles
Deployment: RR1813

Dissolved Trace Metal Concentrations from Depth Profiles

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/897253

Principal Investigator:

Kristen Buck (University of South Florida, USF)

Co-Principal Investigator:

Mark A. Brzezinski (University of California-Santa Barbara, UCSB)

Bethany D. Jenkins (University of Rhode Island, URI)

Student:

Shannon M. Burns (University of South Florida, USF)

Contact:

Kristen Buck (Oregon State University, OSU)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump (Diatoms and carbon export)

Version:

Deployment Synonyms:

EXPORTS

Expand/Collapse All

Description

Methods & Sampling

Dataset acquisition description

Samples for dissolved trace metal concentrations were collected using a trace metal clean (TMC) rosette (Measures et al. 2008) on the R/V Roger Revelle on 8 September 2018 (R2R event #RR1813-SE-20180908.1732.001). A total of 10 depths were sampled for dissolved (<0.2 micrometers (μm), Pall Acropak) trace metals, between 95 meters (m) to 825 m. All depths were sampled in triplicate for intercalibration; only the results from the Buck lab are reported here. Samples were collected in acid-cleaned 125-milliliter (mL) low-density polyethylene (LDPE, Nalgene) bottles, and acidified to 0.024 M hydrochloric acid (HCl, Fisher Optima). Dissolved trace metal (Fe, Cu, Mn, Co, Ni, Cu, Zn, Cd, Pb) concentrations were determined by high-resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) at the University of South Florida (Burns et al. 2023).

Sample analyses for dissolved trace metals were performed by Shannon Burns (USF).

Data Processing Description

Dataset Processing Description

Data Processing:
Data were processed using ESI SC version 2.9.0.380.

Data Quality Flags:
The standard Ocean Data View (ODV) / SeaDataNet qualifying flags were used (reference all flags at http://vocab.nerc.ac.uk/collection/L20/current/).

1: Good Value: Good quality data value that is not part of any identified malfunction and has been verified as consistent with real phenomena during the quality control process. [Used when replicates were in good agreement and/or when dataset agreed with previously published results].

2: Probably Good Value: Data value that is probably consistent with real phenomena but this is unconfirmed. [Used when data is oceanographically consistent but no replicates or published datasets to compare with.]

3: Probably Bad Value: Data value recognized as unusual during quality control that forms part of a feature that is probably inconsistent with real phenomena. [Used when data not oceanographically consistent but replicate analyses agreed.]

4: Bad Value: An obviously erroneous data value. [Used when replicates did not agree].

5: Changed Value: Data value adjusted during quality control. [Not used.]

6: Value Below Detection Limit: The level of the measured phenomenon was too small to be quantified by the technique employed to measure it. Values are replaced with 'nd' for 'not detectable'. [Not used. See Table 1 (Supplemental File) for detection limits.]

7: Value in Excess: The level of the measured phenomenon was too large to be quantified by the technique employed to measure it. The accompanying value is the measurement limit for the technique. [Not used.]

8: Interpolated Value: This value has been derived by interpolation from other values in the data object. [Not used.]

9: Missing Value: The data value is missing. Any accompanying value will be a magic number representing absent data. [Not used.]

A: Value Phenomenon Uncertain: There is uncertainty in the description of the measured phenomenon associated with the value such as chemical species or biological entity. [Not used.]

BCO-DMO Processing:
- converted SAMPLING_DATE column to YYYY-MM-DD format;
- added the ISO_DateTime_UTC field;
- renamed fields to comply with BCO-DMO naming conventions.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1756433	NSF Division of Ocean Sciences
OCE-1756442	NSF Division of Ocean Sciences
OCE-1756816	NSF Division of Ocean Sciences

Instruments

Inductively Coupled Plasma Mass Spectrometer

Supplied Name: Element XR Inductively Coupled Plasma Mass Spectrophotometer

Supplied Description:

Instrument Type

Generic Name: Inductively Coupled Plasma Mass Spectrometer

Acronym: ICP Mass Spec

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/

Generic 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.

SeaFAST Automated Preconcentration System

Supplied Name: SeaFAST pico

Supplied Description:

Instrument Type

Generic Name: SeaFAST Automated Preconcentration System

Generic Description:

The seaFAST is an automated sample introduction system for analysis of seawater and other high matrix samples for analyses by ICPMS (Inductively Coupled Plasma Mass Spectrometry).

Trace Metal Bottle

Supplied Name: trace metal clean (TMC) rosette

Supplied Description:

Instrument Type

Generic Name: Trace Metal Bottle

Acronym: TM Bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/30/

Generic Description:

Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
SAMPLING_DATE	Date when the cast was conducted.	unitless	date
JULIAN_DAY	Day of year sampled.	unitless	julian_day
EPOCH	Assigned time block (8 or 9 days each) during the cruise, #1-3.	unitless	time_point
EPOCH_DAY	Day within the epoch time block.	unitless	time_point
LATITUDE	Latitude of deployment location in degrees North	decimal degrees	lat
LONGITUDE	Longitude of deployment location in degrees East (negative values = West)	decimal degrees	lon
TIME_UTC	Time of sampling (UTC/GMT), from the string date in bottle file.	unitless	time
DEPTH	Sample depth, from bottle file.	meters (m)	depth
Mn_D_CONC	Concentration of dissolved manganese (Mn).	nanomoles per liter (nM)	Mn
Mn_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	nanomoles per liter (nM)	Mn
Mn_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Mn_D_CONC_Flag	Ocean Data View quality flag (see Processing Description for definitions) for Mn_D_CONC.	unitless	q_flag
Fe_D_CONC	Concentration of total dissolved iron (Fe).	nanomoles per liter (nM)	Fe
Fe_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	nanomoles per liter (nM)	Fe
Fe_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Fe_D_CONC_Flag	Ocean Data View quality flag (see Processing Description for definitions) for Fe_D_CONC.	unitless	q_flag
Co_D_CONC	Concentration of dissolved cobalt (Co).	picomoles per liter (pM)	Co
Co_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	picomoles per liter (pM)	Co
Co_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Co_D_CONC_flag	Ocean Data View quality flag (see Processing Description for definitions) for Co_D_CONC.	unitless	q_flag
Ni_D_CONC	Concentration of dissolved nickel (Ni).	nanomoles per liter (nM)	Ni
Ni_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	nanomoles per liter (nM)	Ni
Ni_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Ni_D_CONC_flag	Ocean Data View quality flag (see Processing Description for definitions) for Ni_D_CONC.	unitless	q_flag
Cu_D_CONC	Concentration of dissolved copper (Cu).	nanomoles per liter (nM)	Cu
Cu_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	nanomoles per liter (nM)	Cu
Cu_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Cu_D_CONC_flag	Ocean Data View quality flag (see Processing Description for definitions) for Cu_D_CONC.	unitless	q_flag
Zn_D_CONC	Concentration of dissolved zinc (Zn).	nanomoles per liter (nM)	Zn
Zn_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	nanomoles per liter (nM)	Zn
Zn_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Zn_D_CONC_flag	Ocean Data View quality flag (see Processing Description for definitions) for Zn_D_CONC.	unitless	q_flag
Cd_D_CONC	Concentration of dissolved cadmium (Cd).	picomoles per liter (pM)	Cd
Cd_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	picomoles per liter (pM)	Cd
Cd_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Cd_D_CONC_flag	Ocean Data View quality flag (see Processing Description for definitions) for Cd_D_CONC.	unitless	q_flag
Pb_D_CONC	Concentration of dissolved lead (Pb).	picomoles per liter (pM)	Pb
Pb_D_CONC_STDEV	Standard deviation (or difference about the mean) of replicate analyses of this sample	picomoles per liter (pM)	Pb
Pb_D_CONC_n	Number of times this sample was analyzed.	unitless	number
Pb_D_CONC_flag	Ocean Data View quality flag (see Processing Description for definitions) for Pb_D_CONC.	unitless	q_flag
ISO_DateTime_UTC	ISO 8601 notation of date and time of sampling (time zone is UTC).	unitless	ISO_DateTime_UTC

Database

Contribute Data

Dataset: Dissolved Trace Metal Concentrations from Depth Profiles
Deployment: RR1813

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Dissolved Trace Metal Concentrations from Depth ProfilesDeployment: RR1813

Dataset acquisition description

Dataset Processing Description

Dataset: Dissolved Trace Metal Concentrations from Depth Profiles
Deployment: RR1813