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基于介质阻挡放电(DBD)原理和结构,建立了适用于原子荧光光谱仪(AFS)的低温等离子体小型原子化器(Atomizer),并研究了氢化物发生-低温等离子体原子化器-原子荧光光谱(HG-DBD Atomizer-AFS)测定环境样品中痕量碲(Te)的分析方法.DBD等离子体原子化器具有小型、低温等优点.对DBD放电结构和放电功率、载气气体流速,氢化物发生过程中的酸度、KBH_4浓度,以及观测高度等实验条件进行了详细的考察并优化.本系统测定Te的检出限(3σ)为0.08 μg/L;线性范围为0.5～80 μg/L;测定精密度为2.1%(n=7);加标回收率为90%～103%.对国家级标准样品(GBW07404,GBW07405,GBW07406)进行测定,测定结果与标准值一致,证明本方法准确可行.“,”A method has been developed for the determination of tellurium(Te) in soil by hydride generation(HG) atomic fluorescence spectrometry(AFS) based on dielectric barrier discharge(DBD) plasma as low-temperature atomizer. The samples were dissolved by aqua regior acid without matrix separation. The characteristics of the DBD atomizer and the effects of different experimental parameters, such as discharge power, flow rates of discharge gas and AFS carrier gas, lamp current, negative high voltage, observation height, KBH4 concentration and acid medium on the determination were studied and the analytical performances of the present method were evaluated. The detection limit of Te was 0.08 μg/L. The linear range was from 0.5 to 80 μg/L. Recoveries of spiked sample was from 90% to 103 %. The accuracy of this method was verified by the determination of Te in the reference materials. The results agreed well with the reference values.