SD
1) Journal of Chromatography A
Volume 786, Issue 2, 31 October 1997, Pages 371-376
Determination of berberine and palmatine in Phellodendri Cortex using ion-pair supercritical fluid chromatography on-line coupled with ion-pair supercritical fluid extraction by on-column trapping
Keiichi Sutoa, , Shinichi Kakinumaa, Yuji Itoa, Kazuhiko Sagaraa, Hideki Iwasakia and Hideji Itokawa
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http://dx.doi.org/10.1016/S0021-9673(97)00590-6Volume 810, Issues 1-2, 12 June 1998, Pages 252-255
Determination of atractylon in Atractylodes rhizome using supercritical fluid chromatography on-line coupled with supercritical fluid extraction by the direct induction method
Keiichi Sutoa, *, Shinichi Kakinumaa, Yuji Itoa, Kazuhiko Sagaraa, Hideki Iwasakia and Hideji Itokawa
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http://dx.doi.org/10.1016/S0021-9673(98)00225-8