This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
 

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In many cases, the elemental bonding can be analyzed by EELS. For instance, the EEL spectra in Figure 2617 presents boron(B)-bonding to other elements in Co–Ru_x–B-O catalysts. For the x_Ru = 0 sample, the spectrum shows both contributions of B-Co bonds and B-O bonds. For 0.13≤ x_Ru ≤ 0.7, the B-K edge is dominated by the signals from B-O bonds together with a smaller contribution of B-M (metals) bonds. For the x_Ru = 1 sample, the B-K edge shows the B–Ru bonds and a wide peak attributed to B-O bonds.

Figure 2617. B K edges in the EELS spectra of Co–Ru–B-O catalysts. [1]

[1] G.M. Arzac, T.C. Rojas, A. Fernández, New insights into the synergistic effect in bimetallic-boron catalysts for hydrogen generation: The Co–Ru–B system as a case study, Applied Catalysis B: Environmental 128 (2012) 39– 47.