FTIR spectral library of archaeological sediments

FTIR spectra of the major components of archaeological sediments. Spectra were collected using a Thermo Scientific Nicolet iS5 spectrometer equipped with an iD1 transmission compartment in the 4000-400 cm-1 range at 4 cm-1 resolution, and in 32 scans. Spectra were collected with the same instrument and settings in ATR mode using an iD7 ATR diamond crystal compartment.考古沉积物主要组分的傅里叶变换红外（Fourier Transform Infrared, FTIR）光谱。本数据集的光谱采用赛默飞世尔科技（Thermo Scientific）Nicolet iS5型光谱仪采集，该仪器搭载iD1透射室，扫描波数范围为4000~400 cm⁻¹，分辨率为4 cm⁻¹，扫描次数为32次。此外，本数据集还采用相同仪器及参数，通过搭载iD7 ATR金刚石晶体室的衰减全反射（Attenuated Total Reflection, ATR）模式完成采集。