本文对头发中微量元素分析的若干问题进行了探讨,提出一种定标测定法对头发样品中的Gd进行定量分析。借助离子感光板的乳剂特性曲线和单曝光法,经过谱线面积因子和本底校正,考虑基体中Cd背景值的贡献,获得Cd浓度定标曲线。检测精度为14～21%。与普通定量分析结果比较,相对误差为11～18%。 In this paper, we discussed some problems of trace element analysis in hair and proposed a calibration method to quantitatively analyze Gd in hair samples. With the help of the emulsion characteristic curve and the single exposure method of the ion plate, the Cd concentration calibration curve was obtained by considering the background contribution of Cd in the matrix through the spectral line area factor and background correction. Detection accuracy of 14 to 21%. Compared with the results of general quantitative analysis, the relative error is 11-18%.