研究了悬浮液进样＿石墨炉原子吸收测定钒钛磁铁矿中痕量镓的分析方法。以Ｎｉ（Ⅱ）作为基体改进剂时，可直接用镓标准溶液进行校准。样品粒度＜３８μｍ、悬浮液中试样质量浓度在０１～８０ｇ／Ｌ、含镓质量浓度不超过１００μｇ／Ｌ时呈良好线性关系，检出限为２４μｇ／Ｌ镓。用所拟方法测定了含镓量在１６～４２μｇ／ｇ的标准矿样，结果与标准值相符，６次平行测定的相对标准偏差不超过９％，满足痕量分析的要求。 The method for the determination of trace gallium in vanadium-titanium magnetite by suspension sampling-graphite furnace atomic absorption spectrometry was studied. With Ni (Ⅱ) as a matrix modifier, it can be calibrated directly with gallium standard solution. The particle size of the sample is less than 38μm, the concentration of the sample in the suspension is 01 ~ 80g / L, and the concentration of gallium does not exceed 100μg / L. The detection limit is 24μg / L gallium. The standard samples with 16 ~ 42μg / g gallium were determined by the proposed method. The results are consistent with the standard values. The relative standard deviation of the six parallel determinations does not exceed 9%, which meets the requirements of trace analysis.