Determination of four additives in cakes by large volume gradient ion chromatography

This paper aims to establish a detection method for simultaneous determining four additives in flour products: one simultaneously determines the acesulfame, sodium cyclamate, bromate, and calcium propionate through selection of ion chromatography pump flow rate, injection volume, eluent concentration, optimization sample pretreatment influence interfering ions. When using rate 0.8 ml/min, 200 µL large volume injection, 0-14 min, 14-25 min concentration 30 mmol/L gradient elution, 25-26 6 mmol/L, product is pulverized after addition water vortex ultrasonic extraction, supernatant by C18 solid phase extraction (SPE) columns silver filter, 0.22μm porous membrane testing on machine, limits kinds targets are 0.16 μg/ml, 0.19 0.24 0.38 respectively; The standard deviations retention time peak area propionate, respectively 0.13~0.42%, 2.14~4.25% ; bromate 0.20~0.67%, 1.33~4.52% cyclamate 0.14~0.53%, 3.57~5.62% acesulfame potassium 0.64~0.93%, 0.42~5.81%. uses as sole solvent can detect products single test. And process also very simple. it applied other food tests, some compounds may cause interference, which be assisted methods.