Dataset: Total Mercury Concentrations Collected from Scripps Pier in La Jolla, CA from December 2020 to December 2024

ValidatedFinal no updates expectedDOI: 10.26008/1912/bco-dmo.950021.1Version 1 (2025-02-04)Dataset Type:Other Field Results

Principal Investigator: Amina T. Schartup (University of California-San Diego Scripps)

Co-Principal Investigator: Carl Lamborg (University of California-Santa Cruz)

Student, Contact: Hannah M. Adams (University of California-San Diego Scripps)

BCO-DMO Data Manager: Karen Soenen (Woods Hole Oceanographic Institution)

Project: Collaborative Proposal: Unravelling the Oceanic Dimethylmercury Cycle (DMHg in the Ocean)

Abstract

weekly collected samples of Total Mercury from Scripps Pier in La Jolla, CA from December 2020 to December 2024 to capture variability over multiple years. Samples were collected using a peristaltic pump equipped with weighted sample tubing into pre-cleaned glass bottles. Samples were analyzed via a Tekran 2600 Automatic Mercury Sampler.

Cite Dataset

Weekly sampling was conducted between December 2020 and November 2024 at the Ellen Browning Scripps Memorial Pier (Scripps Pier) in La Jolla, CA (32.8634 °N, 117.2546 °W). Total Hg (THg) and total methylated Hg (MeHg; not shown) were sampled at depths of < 0.5 m and 6 m using a peristaltic pump equipped with weighted sample tubing. Seawater was pumped into clean borosilicate glass bottles (I-Chem) and returned to the lab. MeHg and THg samples were acidified with 0.4% hydrochloric acid (HCl; Trace Metal Grade, J.T. Baker), and stored at 4°C until analysis within 6 months.

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Related Publications

Methods
Lamborg, C. H., Hammerschmidt, C. R., Gill, G. A., Mason, R. P., & Gichuki, S. (2012). An intercomparison of procedures for the determination of total mercury in seawater and recommendations regarding mercury speciation during GEOTRACES cruises. Limnology and Oceanography: Methods, 10(2), 90–100. doi:10.4319/lom.2012.10.90
Methods
U.S. Environmental Protection Agency. Method 1631, Revision E: Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry Method 1631, Revision E: Washington, D.C., 2002.
Methods
Yang, L., Willie, S., & Sturgeon, R. E. (2005). Ultra-trace determination of mercury in water by cold-vapor generation isotope dilution mass spectrometry. Journal of Analytical Atomic Spectrometry, 20(11), 1226. https://doi.org/10.1039/b506695f

Adams, H. M., Schartup, A. T., Lamborg, C. (2025) Total Mercury Concentrations Collected from Scripps Pier in La Jolla, CA from December 2020 to December 2024. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-02-04 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.950021.1 [access date]

Terms of Use

This dataset is licensed under Creative Commons Attribution 4.0.


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Funded by the U.S. National Science Foundation