Determination of Five Coumarins in Angelicae Pubescentis Radix from Different Origins by HPTLC-Scanning

Figure 1

Chromatogram profile of standard and samples. Note. (a), (b) 1–5 are HPTLC scanning images of 2, 4, 6, 8, and 10 μL sampling volume of the standard solution and sample solution. The chromatographic peaks from left to right were oxypeucedanin, imperatorin, osthole, columbianadin, and isoimperatorin.

(a)

(b)