以紫外光诱导化学蒸气发生装置作为原子荧光光谱仪的进样系统,建立了光化学蒸气发生原子荧光光谱法测定中药材丹参中总硒含量的分析方法。研究了试剂浓度、光化学蒸气反应管等因素对硒化学蒸气发生效率的影响。仪器对硒的检出限为6.60 ng/mL,精密度(RSD)为0.6%(n=10),回收率为98%～107%。 A method for the determination of total selenium in Radix Salviae Miltiorrhizae was established by using photochemical vapor atomic fluorescence spectrometry with UV-induced chemical vapor generator as the injection system of atomic fluorescence spectrometer. The influence of reagent concentration, photochemical vapor reaction tube and other factors on the efficiency of selenium chemical vapor generation was studied. The detection limit of selenium was 6.60 ng / mL, precision (RSD) was 0.6% (n = 10) and recovery was 98% -107%.