Official Methods of Analysis of the Association of Official Analytical Chemists, المجلد 13

acetone acid add 10 mL add 5 mL addn addnl aflatoxin aliquot anhyd Apparatus blank bottle Calc centrf CHCI color column concn contg cool detd detn diln dish Dissolve distillate distn dithizone equiv evap extn filter thru filtrate flask funnel g sample glass H₂O bath H₂SO heat hexane HOAc hot H₂O internal std JAOAC layer let stand MeOH Method mix thoroly mixt mL alcohol mL aliquot mL beaker mL erlenmeyer mL H₂O mL HCI mL portions mL sample mL vol mL with H₂O NaOH ochratoxin Official Final Action paper parathion pet ether phenol phthin Pipet plate Prep Preparation of Sample prepd pycnometer Pyrex reagent remove residue rinse room temp sample contg sample soln shake vigorously silica gel soln.-Dissolve solv std curve std soln steam bath stirring stock soln stopcock stopper titr titrn Transfer vanillin wash