Nearlyallthesamplespresentedtothepharmaceuticalanalystaremixtures,sometimesverycomplexones.Thedeterminationoftheamountofeachisolatedcomponentisusuallyasimplematter.Theanalysisofthesesamecomponentsineachother’spresencemay,however,bedifficultorevenimpossibl (共 2419 字) [閱讀本文] >>