caa a22 4500 465748368 CHVBK 20180323111826.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00323416 doi (NATIONALLICENCE)springer-10.1007/BF00323416 Isolation and analysis of polar compound types in residuals [Elektronische Daten] [R. Kohli, D. Chandra] Summary: Polar heteroatomic concentrates were separated from deasphalted oils and asphalts of indigenous crudes by various separation techniques. Conditions have been standardized for its separation using Fuller's earth as adsorbent, and data is compared with those obtained by the techniques reported in the literature. Semiquantitative estimates of phenols, pyrrols, carboxylic acids and amides in the concentrates were also made by IR spectrometry. Springer-Verlag, 1990 Kohli R. Indian Institute of Petroleum, 248005, Dehradun, India aut Chandra D. Indian Institute of Petroleum, 248005, Dehradun, India aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/6(1990-01-01), 732-734 0937-0633 338:6<732 1990 338 216 https://doi.org/10.1007/BF00323416 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00323416 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kohli R. Indian Institute of Petroleum, 248005, Dehradun, India aut NATIONALLICENCE 700 1- Chandra D. Indian Institute of Petroleum, 248005, Dehradun, India aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/6(1990-01-01), 732-734 0937-0633 338:6<732 1990 338 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer