Abstract:Objective To investigate the safety of Chaenomeles speciosa Nakai for food and medication and provide evidence for its quality control. Methods For 8 batches of Chaenomeles speciosa Nakai samples, the content of Pb, Cd, Cu, As, and Hg was determined using graphite furnace atomic absorption spectrometry, flame atomic absorption spectrometry, and atomic fluorescence spectrometry, while the residual levels of organochlorine, pyrethroids, and organophosphorus pesticides were determined using gas chromatography. The aflatoxin content in Chaenomeles speciosa Nakai samples stored under natural condition for 1-2 years was determined by means of immunoaffinity column clean-up and high-performance liquid chromatography. Results In 8 batches of Chaenomeles speciosa Nakai samples, the content of Pb, Cd, Cu, As, and Hg was all below the prescribed limits, while the residual levels of organochlorine, organophosphorus pesticides, and pyrethroids were all below the detection limits. In 6 batches of Chaenomeles speciosa Nakai samples in storage, the total content of aflatoxin B1, B2, G1, and G2 was all below the detection limits. Conclusion Chaenomeles speciosa Nakai from major production areas are qualified in tests of heavy metals, pesticide residues, and aflatoxin, and they are safe for food and medication.