Stable Mercury Isotopic Analyses in Natural Matrices via Rapid Pre-Concentration Method
February 11, 2019
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. 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 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.
Citation Information
Publication Year | 2019 |
---|---|
Title | Stable Mercury Isotopic Analyses in Natural Matrices via Rapid Pre-Concentration Method |
DOI | 10.5066/P9GU2R16 |
Authors | Sarah E Janssen, David P Krabbenhoft |
Product Type | Data Release |
Record Source | USGS Asset Identifier Service (AIS) |
USGS Organization | Upper Midwest Water Science Center |
Rights | This work is marked with CC0 1.0 Universal |
Related
Rapid pre-concentration of mercury in solids and water for isotopic analysis
The precise quantification of mercury (Hg) stable isotope compositions in low concentration or dilute samples poses analytical challenges due to Hg mass limitations. Common Hg pre-concentration procedures require extended processing times, making rapid Hg stable isotope measurements challenging. Here we present a modified pre-concentration method that combines commonly used Hg reduction...
Authors
Sarah E. Janssen, Ryan F. Lepak, Michael T. Tate, Jacob M. Ogorek, John F. DeWild, Christopher L. Babiarz, James P. Hurley, David P. Krabbenhoft
Sarah E Janssen
Research Chemist
Research Chemist
Mercury Research Laboratory Team Lead
Mercury Research Laboratory Team Lead
Email
Phone
David P Krabbenhoft
Scientist Emeritus
Scientist Emeritus
Email
Phone
Related
Rapid pre-concentration of mercury in solids and water for isotopic analysis
The precise quantification of mercury (Hg) stable isotope compositions in low concentration or dilute samples poses analytical challenges due to Hg mass limitations. Common Hg pre-concentration procedures require extended processing times, making rapid Hg stable isotope measurements challenging. Here we present a modified pre-concentration method that combines commonly used Hg reduction...
Authors
Sarah E. Janssen, Ryan F. Lepak, Michael T. Tate, Jacob M. Ogorek, John F. DeWild, Christopher L. Babiarz, James P. Hurley, David P. Krabbenhoft
Sarah E Janssen
Research Chemist
Research Chemist
Mercury Research Laboratory Team Lead
Mercury Research Laboratory Team Lead
Email
Phone
David P Krabbenhoft
Scientist Emeritus
Scientist Emeritus
Email
Phone