便携式X射线荧光光谱分析技术(PXRF)是一种表面分析技术, 样品表面状况对定量分析结果有很大的影响。 本文采用PXRF对新疆、 广西、 江苏等地出土的Na2O-CaO-SiO2, K2O-SiO2和PbO-BaO-SiO2体系古代玻璃的风化表面与内部进行了定量分析, 指出了主要助熔剂的含量在不同部位的变化。 另外, 还研究了样品与参考平面之间的距离以及弧形表面对样品定量分析的影响, 利用归一化方法和校正因子法, 对测试结果进行了校正, 并对校正后的结果进行了比较。 结果表明归一化方法及校正因子法对于非理想状态表面样品的校正结果几乎相同, 但实际测量中, 在满足一定的条件下, 归一化方法更适合古代文物的定量分析。 研究结果对于古代玉器的PXRF定量分析也具有一定的指导意义。

Portable X-ray fluorescence analysis (PXRF) is one kind of surface analysis techniques, and the sample surface condition is an important factor that influences the quantitative analysis results. The ancient glass samples studied in the present paper were excavated from Xinjiang, Guangxi, Jiangsu provinces, and they belong to Na2O-CaO-SiO2, K2O-SiO2, and PbO-BaO-SiO2 system, respectively. Quantitative analysis results of weathered surface and inside of the ancient glass samples were compared. The concentration change of main fluxes in different parts of the samples was pointed out. Meanwhile, the authors studied the effect of distance between the sample and the reference plane, and curve shape of the sample on the quantitative results. The results obtained were calibrated by three methods, and the validity of these three methods was proved. Finally, the normalizing method was proved to be a better method for quantitative analysis of antiques. This paper also has guiding significance for chemical composition analysis of ancient jade samples using PXRF.