Abstract:Cloud point extraction (CPE)- atomic absorption spectrometry(AAS) method for determination of trivalent chromium, hexavalent chromium and total chromium in ten kinds of Chinese herbal medicines from Guangzhou was developed, and its health risk assessment was evaluated. With this method, good Linearity, reproducibility precision, and recovery were obtained. The results showed that otal chromium in Chinese herbal medicines were all much higher than national standard, except for Radix pueradiae. And only RADIX BUPLEURIi, RADIX EPHEDRAE and LIGNUM SAPPAN would to exceed the national standard, if choose the concentrations of hexavalent chromium as the standard. The health risk index showed that the concentration of total chromium in LIGNUM SAPPAN will possibly produce health risk of adult person. The health risk possibilities of other Chinese herbal medicines were not significant..
