Page 28 - Analytical method for food addtives
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E110: Sunset yellow 9
18 19 20 21 22
Diode-array nm 214 M sodium mM
pH 9.5 borax–NaOH buffer containing mM β-cyclodextrin Fused-silica capillary column operated kV with a buffer of 0.05 mM NaH 2 PO 4 /5 deoxycholate in 5 sodium borate at pH 8.6/acetonitrile Measurements were carried out directly using an HMDE (hanging mercury dropping electrode) Measurements were made directly. M NH 4 Cl/NH
5
mL at 30 (17:3) of –0.40V mL increase at 487
Direct injection of liquids g sample was extracted with 5 mL water–methanol (4:1). 1 25 M tetrabutylammonium 0.05 phosphate was added and extracted by adsorption onto C18 Sep-Pak cartridge and elution with methanol Samples were dissolved in water, warmed to dissolve completely and filtered Samples were diluted with water mL
Ice-cream bars and fruit soda drinks Cordials and confectionery Soft drinks Refreshing drinks Drinks
High-performance capillary electro- phoretic (HPCE) Micellar electro- kinetic capillary chromatography (MECC) Ratio derivative voltammetry Square wave adsorptive voltammetry Integrated solid phase spectro- photometric-FIA
