Ghauch Antoine, Deveau Pierre-Alexandre, Jacob Véronique, Baussand Patrick
National Council for Scientific Research, Lebanese Atomic Energy Commission, Environmental and Atmospheric Research Chemistry Team (ERECA), P.O. Box 11-8281, Beirut, Lebanon.
Talanta. 2006 Feb 15;68(4):1294-302. doi: 10.1016/j.talanta.2005.07.046. Epub 2005 Aug 24.
Attenuated total reflection Fourier transformed infrared spectroscopy (ATR-FTIR) can be successfully used for the quantitative determination of small amounts of pollutants like the organic fraction of aerosols. The relation between sample concentration and reflectance is described by the Kubelka-Munk equation and was found to be linearly proportional to the absorption band of some functional group. Several parameters like the matter of solid matrix, the cleaning of the sampling support, the treatment of reflectance spectra and the base line correction considerably influenced the reflectance spectra and facilitated data interpretations. The feasibility of the ATR-FTIR was evaluated by the monitoring of specific organic group bands on filters collected in the French cities of Grenoble and Clermont-Ferrand. We have obtained for hydroxyl group a calibration curve by plotting the relative intensity of reflectance versus the concentration. The linearity was obtained for OH from 1x10(-1) to 1x10(0)molL(-1) with r(2)=0.9959. We can consider that for a direct measurement of the intensity of reflectance, it is possible to perform quantitative ATR-FTIR organic group analysis.
衰减全反射傅里叶变换红外光谱法（ATR-FTIR）可成功用于定量测定少量污染物，如气溶胶中的有机成分。样品浓度与反射率之间的关系由库贝尔卡-蒙克方程描述，并且发现与某些官能团的吸收带呈线性比例关系。诸如固体基质的物质、采样载体的清洁、反射光谱的处理以及基线校正等几个参数对反射光谱有相当大的影响，并有助于数据解释。通过监测在法国格勒诺布尔和克莱蒙费朗市收集的滤膜上特定有机基团谱带，评估了ATR-FTIR的可行性。我们通过绘制反射率相对强度与浓度的关系图，得到了羟基的校准曲线。对于OH，在1×10⁻¹至1×10⁰molL⁻¹范围内获得了线性关系，r² = 0.9959。我们可以认为，对于直接测量反射率强度，进行定量ATR-FTIR有机基团分析是可行的。
