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Stable Mercury Isotopic Analyses in Natural Matrices via Rapid Pre-Concentration Method Data Release

Metadata Updated: October 28, 2023

This data relates to the development of a modified pre-concentration method for mercury (Hg) stable isotope measurements that uses chemical Hg reduction and gold trap amalgamation followed by semi-rapid thermal desorption (less than 1 hour) and chemical trapping in a novel oxidizing solution. The thermal desorption method was demonstrated to perform adequately on multiple trapping matrices previously presented, however our new bromine monochloride (BrCl) wet oxidant trap (40% 3HNO3:BrCl) was deemed superior. As such, this solution was capable of trapping consistently in 2mL volume over a wide range of Hg masses (5 to 200 ng). The procedure was also shown to work effectively on natural matrices, waters and sediments, producing comparable isotope results to the direct digestion analyses. Here we present the data from all of the experiments conducted during method development for this technique. Table information:
T1-Data Dictionary
T2- Mercury isotopic results and trapping efficiencies for NIST 3133 standard using different trapping matrices (oxidants) for the 40 minute desorption program.
T3- Mercury isotopic results and trapping efficiencies for NIST 3133 standard using the new bromine monochloride and nitric acid oxidant with the 40 minute desorption program. T4- Mercury isotopic results and trapping efficiencies for a certified sediment material over varied purging times which with the aid of chemical reduction strip Hg gas from digestions. T5- Mercury isotopic results and trapping efficiencies for assorted natural matrices using the 40 minute desorption program and the bromine monochloride oxidant trap. Data presented in this data release relates to the journal article: Janssen et al. Rapid Pre-Concentration of Mercury in Solids and Water for Isotopic Analysis, Analytica Chimica Acta https://doi.org/10.1016/j.aca.2018.12.026

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Maintainer
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Identifier USGS:5c014266e4b0815414cc2e53
Data Last Modified 20200827
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 187ec47d-99c7-4f70-8364-037f41aed7f7
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -89.604492187455,42.968162056155,-89.357299804652,43.09264117064
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash a7a07e20f976e8c15b5dece73606e99c5fa8f4b8740a7b5ad760988ef0fcea14
Source Schema Version 1.1
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