悬浮液进样-火焰原子吸收光谱法直接测定湘玉竹中铜

Determination of Cu in polygonatum odoratum(MiLL) druce by FAAS adopting suspension sample intruction

用悬浮液进样-火焰原子吸收光谱法测定湘玉竹中铜，样品经烘干、研磨、过筛配制琼脂悬浮液，直接喷人空气．乙炔火焰测定，本法测定加标回收率为97．8％，99．7％．方法的HSD小于2，5％（n=6），检测限为0．0038μg·mL^-1．

Cu in polygonatum odoratum （MiLL） druce is determined by FAAS adopting suspension sample intruction. Samples are dried, sieved and made into agar suspension to be injected into air-acetylene flame for determination, Recovery rate of standard addition is 97.8% - 99.7%. RSD is less than 2.5% and the detection limit is 0.0038（g/mL.