用石墨炉原子吸收法测定掺质钆镓石榴石单晶中钴、铬、镍的含量,晶体中的钆不影响测定,但镓呈现背景干扰,文中对此进行了讨论。用氘灯扣除背景。钴、铬、镍含量为0.015%、0.037%、0.0057%时,变动系数分别为1.4%、1.9%、2.7%,检出限分别为2.5μg/g、0.87μg/g、2.0μg/g。 The contents of cobalt, chromium and nickel in the doped gadolinium-gallium-garnet single crystal were determined by graphite furnace atomic absorption spectrometry. The determination of gadolinium in the crystal did not affect the determination, but the background interference of gallium was discussed in this paper. Deuterium lamp with a background subtracted. The coefficients of variation were 1.4%, 1.9% and 2.7% when the contents of cobalt, chromium and nickel were 0.015%, 0.037% and 0.0057%, respectively. The limits of detection were 2.5μg / g, 0.87μg / g and 2.0μg / g respectively.