Dataset: Dissolved Fe(II) from the southbound leg of the US GEOTRACES Arctic cruise (HLY1502) on USCGC Healy from August to October 2015

Name: Dissolved Fe(II) from the southbound leg of the US GEOTRACES Arctic cruise (HLY1502) on USCGC Healy from August to October 2015
Published: 2020-09-23
Keywords: oceans

Final no updates expectedDOI: 10.26008/1912/bco-dmo.811614.2Version 2 (2020-09-23)Dataset Type:Cruise Results

Principal Investigator: Phoebe J. Lam (University of California-Santa Cruz)

Contact: Maija I. Heller (University of California-Santa Cruz)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)

Abstract

Dissolved Fe(II) concentrations were determined using an automated flow injection analysis system (FeLume II Waterville Analytical) employing a luminol chemiluminescence based detection system as described in King et al. (1995) and Heller et al. (2017). From published and ongoing work in the Peru and Chile oxygen minimum zones an optimized methodology for Fe(II) detection by luminol has been described in Croot et al. (2019). This work details some of the challenges and limitations of using lu...

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Spatial Extent: N:87.82 E:-147.85 S:72.00 W:-162.54
Temporal Extent: 2015-09-10 - 2015-10-08

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From published and ongoing work in the Peru and Chile oxygen minimum zones an optimized methodology for Fe(II) detection by luminol has been described in Croot et al. (2019). This work details some of the challenges and limitations of using luminol for dFe(II) detection. It should be noted that as Fe(II) is a transient redox species with a short half life in oxygenated seawater that is dependent on dissolved oxygen and pH, it is not possible to archive (preserve) samples for later analysis. Intercalibrations for Fe(II) have yet to be conducted in the context of GEOTRACES studies and should be pursued where logistically possible.

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Methods

Croot, P. L., & Laan, P. (2002). Continuous shipboard determination of Fe(II) in polar waters using flow injection analysis with chemiluminescence detection. Analytica Chimica Acta, 466(2), 261–273. doi:10.1016/s0003-2670(02)00596-2

Methods

Croot, P. L., Heller, M. I., & Wuttig, K. (2019). Redox Processes Impacting the Flux of Iron(II) from Shelf Sediments to the OMZ along the Peruvian Shelf. ACS Earth and Space Chemistry, 3(4), 537–549. doi:10.1021/acsearthspacechem.8b00203

Methods

Heller, M. I., Lam, P. J., Moffett, J. W., Till, C. P., Lee, J.-M., Toner, B. M., & Marcus, M. A. (2017). Accumulation of Fe oxyhydroxides in the Peruvian oxygen deficient zone implies non-oxygen dependent Fe oxidation. Geochimica et Cosmochimica Acta, 211, 174–193. doi:10.1016/j.gca.2017.05.019

Methods

Hopkinson, B. M., & Barbeau, K. A. (2007). Organic and redox speciation of iron in the eastern tropical North Pacific suboxic zone. Marine Chemistry, 106(1-2), 2–17. doi:10.1016/j.marchem.2006.02.008

Methods

King, D. W., Lounsbury, H. A., & Millero, F. J. (1995). Rates and Mechanism of Fe(II) Oxidation at Nanomolar Total Iron Concentrations. Environmental Science & Technology, 29(3), 818–824. doi:10.1021/es00003a033

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Dataset: Dissolved Fe(II) from the southbound leg of the US GEOTRACES Arctic cruise (HLY1502) on USCGC Healy from August to October 2015

Final no updates expectedDOI: 10.26008/1912/bco-dmo.811614.2Version 2 (2020-09-23)Dataset Type:Cruise Results

Principal Investigator: Phoebe J. Lam (University of California-Santa Cruz)

Contact: Maija I. Heller (University of California-Santa Cruz)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)

Abstract

Cite Dataset

Spatial Extent: N:87.82 E:-147.85 S:72.00 W:-162.54
Temporal Extent: 2015-09-10 - 2015-10-08

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Views

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Downloads

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Citations

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Methods

File(s)	Type	Description	Action
dissolved_Fe_II.csv (26.40 KB)	Comma Separated Values (.csv)	Primary data file for dataset ID 811614	Download

Supplemental File(s)	Type	Description	Action
Table1.JPG (150.83 KB)	JPEG Image (.jpg)	Table 1: List of samples for in-situ dissolved Fe(II) (dFe(II)) detection; associated with GN01 Dissolved Fe dataset contributed by Phoebe Lam.	Download
Figure2.JPG (126.54 KB)	JPEG Image (.jpg)	Figure 2: Examples for standard additions of Fe(II) and blank calculation of the above described method. Associated with GN01 Dissolved Fe dataset contributed by Phoebe Lam.	Download
Figure1.JPG (93.44 KB)	JPEG Image (.jpg)	Figure 1: Station map for dissolved Fe(II) detection. Note that dFe(II) was only be sampled/detected in southbound basins of the GN01 cruise because of a damage to equipment owned by UCSC at the beginning of the expedition. Associated with GN01 Dissolved Fe dataset contributed by Phoebe Lam.	Download

File(s)	Type	Description	Action
dissolved_Fe_II.csv (26.40 KB)	Comma Separated Values (.csv)	Primary data file for dataset ID 811614	Download

Supplemental File(s)	Type	Description	Action
Table1.JPG (150.83 KB)	JPEG Image (.jpg)	Table 1: List of samples for in-situ dissolved Fe(II) (dFe(II)) detection; associated with GN01 Dissolved Fe dataset contributed by Phoebe Lam.	Download
Figure2.JPG (126.54 KB)	JPEG Image (.jpg)	Figure 2: Examples for standard additions of Fe(II) and blank calculation of the above described method. Associated with GN01 Dissolved Fe dataset contributed by Phoebe Lam.	Download
Figure1.JPG (93.44 KB)	JPEG Image (.jpg)	Figure 1: Station map for dissolved Fe(II) detection. Note that dFe(II) was only be sampled/detected in southbound basins of the GN01 cruise because of a damage to equipment owned by UCSC at the beginning of the expedition. Associated with GN01 Dissolved Fe dataset contributed by Phoebe Lam.	Download

Dataset: Dissolved Fe(II) from the southbound leg of the US GEOTRACES Arctic cruise (HLY1502) on USCGC Healy from August to October 2015

Principal Investigator: Phoebe J. Lam (University of California-Santa Cruz)

Contact: Maija I. Heller (University of California-Santa Cruz)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)

Abstract

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Dataset: Dissolved Fe(II) from the southbound leg of the US GEOTRACES Arctic cruise (HLY1502) on USCGC Healy from August to October 2015

Principal Investigator: Phoebe J. Lam (University of California-Santa Cruz)

Contact: Maija I. Heller (University of California-Santa Cruz)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)

Abstract

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Metadata

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