Impurities and Contaminants Aflatoxins by TLC Chloramphenicol in Royal Jelly by LC-MS Hormones Residues by LC-MS Impurities in Grapefruit seed extract by HPLC-DAD Organochloro pesticides by GC-MS Organophospho Pesticides by GC-MS PCB by GC-MS Sex hormones by LC-MS/MS Solvent residues GC-Headspace
