  We present a multi-region extension of standard power-law background
subtraction for core-level EEL spectra to improve the robustness of background
removal. This method takes advantage of the post-edge shape of core-loss EEL
edges to enable simultaneous and co-dependent fitting of pre- and post-edge
background regions. This method also produces simultaneous and consistent
background removal from multiple edges in a single EEL spectrum. The stability
of this method with respect to the fitting energy window is also discussed.
