[目的]建立石墨炉原子吸收法(GFAAS)直接测定水中铍的方法。[方法]采用长寿命石墨管,灰化温度1100℃、20s,原子化温度2600℃、3s,0.1%硝酸镁溶液为基体改进剂,横向塞曼石墨炉原子吸收光谱法直接测定水样中痕量铍。[结果]对6个水塘的水进行测定,相对标准偏差<10%,加标回收率为90%～103%。[结论]本法简便、快速、准确,灵敏度和精密度高,可直接应用于测定水中痕量铍。 [Objective] The research aimed to establish a direct method for the determination of beryllium in water by graphite furnace atomic absorption spectrometry (GFAAS). [Method] Long - life graphite tube, ashing agent 1100 ℃, 20s, atomization temperature 2600 ℃, 3s, 0.1% magnesium nitrate solution was used as matrix modifier, and transverse Zeeman graphite furnace atomic absorption spectrometry was used to directly determine the trace of water Beryllium. [Result] The water of 6 reservoirs was determined, the relative standard deviation was less than 10% and the recovery rate was 90% ~ 103%. [Conclusion] The method is simple, rapid, accurate, sensitive and precise and can be directly applied to the determination of trace beryllium in water.