高纯镓中的痕量锌,一般采用化学光谱法测定。在样品处理过程中极易造成污染,空白值的波动很大及检测限仅能达到0.1ppm等缺点。本文利用镓和锌沸点差别(Ga沸点2070℃,Zn沸点905℃)探讨了非火焰原子吸收光谱法直接测定高纯镓中锌的可能性,利用镓的熔点低(30°),在40—50℃用微量注射器取样,在1300℃使锌从镓中蒸发分离出来而原子化。用扣除背景的办法,消除镓蒸气的干扰,测定了 Trace zinc in high purity gallium is generally measured by chemical spectroscopy. In the process of sample processing can easily lead to pollution, a great deal of fluctuations in the blank value and detection limit can only reach 0.1ppm and other shortcomings. In this paper, the possibility of direct determination of zinc in high-purity gallium by non-flame atomic absorption spectrometry was discussed based on the differences of the boiling points of gallium and zinc (Ga boiling point 2070 ℃, Zn boiling point 905 ℃) Samples were taken at 50 ° C using a micro syringe and atomized by evaporating zinc from gallium at 1300 ° C. With a background subtraction method to eliminate gallium vapor interference, measured