Analysis of methanesulfonate by LC-MS
Advisor(s)
Dr. Christopher Spiese
Confirmation
1
Document Type
Poster
Location
ONU McIntosh Center; McIntosh Activities Room
Start Date
21-4-2023 12:00 PM
End Date
21-4-2023 12:50 PM
Abstract
Methanesulfonic acid (MSA) is a key component of the marine sulfur cycle, and represents the last step in mineralization of methylated sulfur. However, MSA has not been measured directly in seawater owing to the high salinity. This project aimed to develop a method to remove background ions and quantify MSA by LC-MS. Chloride and sulfate were removed with Dowex (Ag and Ba forms). The method was then applied to samples from the Gulf of Maine and the Sargasso Sea. Limits of detection were approximately 5 nM with good reproducibility. These results represent the first measurement of MSA in seawater and provide a new avenue for understanding sulfur cycling in the oceans.
Recommended Citation
Buzdon, Abigail and Spiese, Christopher Ph.D., "Analysis of methanesulfonate by LC-MS" (2023). ONU Student Research Colloquium. 29.
https://digitalcommons.onu.edu/student_research_colloquium/2023/posters/29
Restricted
Available to ONU community via local IP address and ONU login.
Analysis of methanesulfonate by LC-MS
ONU McIntosh Center; McIntosh Activities Room
Methanesulfonic acid (MSA) is a key component of the marine sulfur cycle, and represents the last step in mineralization of methylated sulfur. However, MSA has not been measured directly in seawater owing to the high salinity. This project aimed to develop a method to remove background ions and quantify MSA by LC-MS. Chloride and sulfate were removed with Dowex (Ag and Ba forms). The method was then applied to samples from the Gulf of Maine and the Sargasso Sea. Limits of detection were approximately 5 nM with good reproducibility. These results represent the first measurement of MSA in seawater and provide a new avenue for understanding sulfur cycling in the oceans.