Elemental compositions of carbon, hydrogen, nitrogen, and sulfur contents are determined from ultimate analysis at temperatures in the range of 900–1050°C. Each elemental quantification (C, H...

The elemental composition of the surface of a toluene fraction (sample IV) as the substrate of FDIP I is dissolved in acid (C18O4.5 according to XPS data) is close to the composition of a hypothetical oleic...

Therefore, it is necessary to control the elemental composition.