将悬浮液进样技术应用于火焰原子吸收光谱法,成功地测定了当归、川芎及乌中的镁。对悬浮剂的选择、干扰的消除和检测限做了考察。将样品粉碎、悬浮在琼脂胶体中制成恳浮液,取适量样品悬浮液配制成试液。将试液喷入空气—乙炔火焰,用标准曲线法测定。本方法的测定结果与灰化法一致,方法简单、快速、准确。 The suspension sampling technique was applied to flame atomic absorption spectrometry to successfully determine the magnesium in Angelica sinensis, Rhizoma Chuanxiong and Wuzhong. The selection of suspending agents, elimination of interferences, and detection limits were examined. The sample was crushed and suspended in agar gel to prepare a limpid suspension. The appropriate amount of sample suspension was prepared as a test solution. The test solution was sprayed into the air-acetylene flame and measured using a standard curve method. The determination results of this method are consistent with the ashing method, and the method is simple, rapid, and accurate.