Abstract:Quantitative determination of guanfu A in Radix Aconiti Coreani before and after processing has been made by dual-wavelength TLC-scanning.The results show that the content of guanfu A is about 0.144% before processing,and 0.106%~0.12%after steam processing(n=4),which is greatly higher than other processed products.The average recovery rateis 97.64%(n=5).