北京地质仪器厂研制成功的XDY-Ⅲ型原子荧光光度计,于去年十月中旬通过了由中国勘察技术院主持的技术鉴定。该仪器是一种普及型氢化物无色散原子荧光仪,保留了XDY-Ⅱ型的优点,能同时测定两种可形成氢化物的元素。仪器采用特别空心阴极灯作光源,间歇式脉冲大电流供电,两种不同元素灯交替点亮,同一检测器接收荧光信号。它还采用MS-51单片机作整机控制和 The XDY-Ⅲ atomic fluorescence spectrometer, which was successfully developed by Beijing Geological Instrument Factory, passed the technical appraisal conducted by China Investigation and Technology Institute in mid-October of last year. The instrument is a universal hydrofluoride-free atomic fluorescence spectrometer, retains the advantages of XDY-Ⅱ type, can simultaneously determine two kinds of hydride-forming elements. The instrument uses a special hollow cathode lamp for light source, intermittent pulse high current power supply, two different element lights alternately lit, the same detector receives fluorescence signal. It also uses the MS-51 microcontroller for machine control and