Page 205 - Analytical method for food addtives

27
mM HCl+β-alanine+5 mMβ-UV
5 nMβ-cyclodextrin+0.1 % HPMC,
mM citric acid+β-alanine+
propylmethylcelullose (HPMC)
cyclodextrin+0.05 % hydroxy-
mM citric acid
BE: 20
pH 3.3
TE: 10
LE: 10
pH 3
acid
after dilution (10x) via sampling valve
Sample (5 µL) injected directly or
Make a test solution in methanol. 25 Voltammetric or Prepare a standard curve by plotting polarographic numerical values of solutions against Dilute test solution (5 mL) to 25 mL instrument scanning µg fumaric acid/mL with electrolyte solution up to 3.0 volts 26 Conductivity and Preseparation was run in first Sample (100
Feed additives 0.1 Apple juice

Foods

Polarographic Two-dimensional cITP cITP–CZE