4HUANG J L, MCLEISH M J. High performance liquid chromatographic deter mination of the alkaloids in betel nut[J]. J Chromate, 1989,475:447-450.
5COX S, IRINA PIATKOV I, VICKERS E R, et al. High-performance liquid chromatographic determination of arecoline in human saliva[J] .Journal of Chromatography A, 2004,1032:93-95.