Determination of nocuous elements and pesticide residues in Flos Chrysanthemi indici and its extracts

In the present manuscript, extractives, ashes and dryness loss of Flos Chrysanthemi Indici, and its etheric extracts and 60% ethanolic extracts were analyzed using normal methods and the test descriptions issued in Pharmacopoeia; meanwhile, nocuous elements, organochlorine and pyrethroid pesticides in this three samples were determined by FAAS, AFS, GFAAS and GC.The concentrations of dryness loss, total ash, water-insoluble ash and acid-insoluble ash in etheric extracts were lower than in 60% ethanolic extracts, the result of sulfated ash was actually opposite; nocuous elements and pesticide residues in etheric extracts and 60% ethanolic extracts were in line with Green standards of medicinal plants and preparations for foreign trade and economy ( WM /T2-2004) ; these argued that the two extracts would be safety when used as food additives.