We treated photosensitive silver nitrate with series of chemical treatments,and tested Bi,Cd,Cr,Cu,Fe,Mn,Ni,Pb,Sb,Sn,Te,Se,Zn in the superstratum with graphite furnace atomic absorption spectrophotometer.

• 感光级硝酸银样品经一系列的化学处理后；上清液采用石墨炉原子吸收分光光度法测定其中Bi；Cd；Cr；Cu；Fe；Mn；Ni；Pb；Sb；Sn；Te；Se；Zn元素的含量；本方法测定Bi；Cd；Cr；Cu；Fe；Mn；Ni；Pb；Sb；Sn；Te；Se；Zn各元素均能得到良好的标准曲线；即r=0.；99~1;