Abstract An ideal treatment for the conservation of stonework must provide an adequate depth of penetration into its pore structure. Therefore, in order to confirm the effectiveness of such treatments, the distribution and concentration of the consolidant inside the stone must be quantified. In the methods proposed in the literature, only the relative quantities of consolidant are determined. A methodology has yet to be developed to determine the concentration of the consolidant within the material. In the work described here, a direct and reagent-free analytical methodology to quantify consolidant in a limestone is proposed. The methodology, by Fourier transform infrared spectrometry (FTIR), involved performing absorbance measurements on samples as KBr pellets. The procedure was based on the ratio between the absorbance of a characteristic band of the consolidant and that of an internal standard (potassium ferricyanide). A comparison of the results with those obtained by Wavelength Dispersive X-ray Fluorescence (WDXRF), a well-stablished quantitative technique, showed a satisfactory correlation and sensitivity.

中文翻译：

---

通过 FTIR 光谱法定量测定二氧化硅基固结剂在石灰石中的渗透

摘要 石制品保护的理想处理方法必须提供足够的渗透深度到其孔隙结构中。因此，为了确认此类处理的有效性，必须量化石材内部固结剂的分布和浓度。在文献中提出的方法中，仅确定了固结剂的相对数量。尚未开发出一种方法来确定材料中固结剂的浓度。在这里描述的工作中，提出了一种直接和无试剂的分析方法来量化石灰石中的固结物。该方法通过傅里叶变换红外光谱 (FTIR) 进行，涉及对作为 KBr 颗粒的样品进行吸光度测量。该程序基于固结物特征带的吸光度与内标（铁氰化钾）的吸光度之间的比率。将结果与波长色散 X 射线荧光 (WDXRF)（一种稳定的定量技术）获得的结果进行比较，显示出令人满意的相关性和灵敏度。