Determination of Hexavalent Chromium in Health Foods

Hexavalent chromium was extracted from the health foods sample with alkaline solution. The extract was determined by IC-ICP-MS. The parameters of health milk powder, nutritional drink powder and healthy beverage were acquired. The linear correlation coefficient is greater than 0.999, the RSD of precision is less than 10%, the recoveries are in the range of 80%-110%, and the LOQ is 0.2 μg•L^-1. The method is simple, quick and strong qualitative capability.