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. 2016 Feb 5;7:197–208. doi: 10.3762/bjnano.7.18

Figure 7.

Figure 7

Atomic ratios obtained from XPS measurements at an angle of electron emission of 0°. (a) Ratios of [nitrogen]/[carbon] and [sulfur]/[carbon]. (b) Ratios [sodium]/[carbon] and [chloride]/[carbon]. The solid line is to guide the eye.