Fig. 12

The retention behaviors of a sample mixture of Daturae Flos extract and pilocarpine on the immobilized M3R columns. Two-point immobilized M3R column (a) and Single-point immobilized M3R column (b). Chromatograms of sodium nitrite (a1, b1), pilocarpine (a2, b2), Daturae Flos extract (c1, c2), and sample mixture (d1, d2)