Determining the Sulfur species in the dispersants Corexit 9500A and 9527A applying S K-edge XANES spectroscopy

16th International Conference on X-ray Absorption Fine Structure

Bovenkamp-Langlois, Lisa^1 ; Roy, Amitava^1

J. Bennett Johnston, Sr. Center for Advanced Microstructures and Devices (CAMD), Louisiana State University, Baton Rouge

LA

70806, United States^1

关键词: Deepwater Horizon oil spills;    Dispersants;    Gulf of Mexico;    Sulfonic acid;    Sulfosuccinate;    Sulfur K-edge;    XANES analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/712/1/012093/pdf
DOI  :  10.1088/1742-6596/712/1/012093

来源: IOP

【 摘 要 】

The dispersants Corexit 9500A and 9527A were used extensively during the Deepwater Horizon oil spill in the Gulf of Mexico. Sulfur K-edge X-ray absorption near edge structure (XANES) spectroscopy was used to investigate the dispersants for the sulfur based components. The main sulfur containing component should be dioctyl sodium sulfosuccinate (DOSS). S K-edge XANES analysis shows that indeed the major sulfur species in both kinds of Corexit (9500A and 9527A) is sulfonic acid which is a part of DOSS. In addition some fraction of sulfone was detected.