Determination of chromium in gelatin by graphite furnace atomic absorption spectrometry with microwave digestion

Objective To establish a method for determination chromium in gelatin by graphite furnace atomic absorption spectrometry with microwave digestion.Method The gelatin was dissolved by microwave and then determination the chromium in it by graphite furnace atomic absorption spectrometry.Results There was good linear correlation when chromium density at the range of 0mg/L to 0.1mg/L,the correlation coefficient was 0.9995,detection limit was 0.03mg/kg and the RSD was 1.8%,the recovery rate was from 92.7% to 103.4%.Conclusions This method was convenient,rapid,accurate and suitable for determination chromium in gelatin.