?url_ver=Z39.88-2004&rft_id=10.14233%2Fajchem.2021.23120&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=K.M.&rft.au=Al+Azzam%2C+K.M.&rft.aulast=Al+Azzam&rft.title=Asian+Journal+of+Chemistry&rft.date=2021&rft.issue=4&rft.volume=33&rft.issn=09707077&rft.atitle=HPLC+determination+of+formaldehyde+in+flour+samples+using+2%2C4%2C6-trichlorophenyl+hydrazine+as+derivatization+reagent&rft.pages=930-936&rft.genre=article