RESUMO
Objective: To establish a GC method for the determination of borneol and isoborneol in Niuhuang Qingxin pills ( pre-scription of the bureau). Methods: A capillary column HP-INNOWAX(30 m×0. 25 mm,0. 25 μm) was used and the column tem-perature was kept at 110 ℃. The temperature of the inlet and the FID was 200 ℃ and 230 ℃, respectively. The carrier gas was N2 and the flow rate of the carrier gas was 1. 8 ml·min-1. The split ratio was 10: 1, and the injection volume was 1 μl. Results: The linear response range of borneol and isoborneol was 0. 01-5. 09 μg·ml-1(r=0. 999 5) and 0. 01-5. 03 μg·ml-1(r=0. 999 1), re-spectively. And the average recovery was 99. 34% and 99. 24% with the RSD of 0. 59% and 0. 62% , respectively (n=6). Conclu-sion: The proposed method is accurate, sensitive and simple, and can be used for the quality control of Niuhuang Qingxin pills (pre-scription of the bureau).