Balducci D, Valerio F
Int J Environ Anal Chem. 1986;27(4):315-23. doi: 10.1080/03067318608079824.
Infrared (IR) spectrophotometry allows simple and quick qualitative and quantitative evaluations of different kinds of asbestos, as well as of other inorganic particles. In particular, chrysotile and crocidolite have characteristic IR spectra and optical density measures of 2,710 nm band for chrysotile, of 12,820 nm band for crocidolite permit quantitative evaluation of each fiber alone or in mixture. IR spectra also give informations about changes of fiber structure and of chemical composition due, for example, to thermal treatment or acid leaching. The analytical method we developed can detect levels as low as 0.1 mg of fiber in a 300 mg disk of KBr using a low cost IR spectrophotometer. The use of a Fourier Transform IR spectrophotometer (FTIR) improves dramatically the sensitivity and selectivity. Computer assisted analysis of spectra offers the possibility to reduce matrix interferences and to compare different spectra. Examples of IR technique applied to asbestos-cement products and insulating materials are presented.
红外（IR）分光光度法能够对不同种类的石棉以及其他无机颗粒进行简单快速的定性和定量评估。特别是，温石棉和青石棉具有特征性的红外光谱，温石棉在2710纳米波段的光密度测量值，青石棉在12820纳米波段的光密度测量值，可对每种纤维单独或混合状态进行定量评估。红外光谱还能提供有关纤维结构和化学成分变化的信息，例如由于热处理或酸浸导致的变化。我们开发的分析方法使用低成本的红外分光光度计，在300毫克溴化钾圆片中能够检测低至0.1毫克的纤维含量。使用傅里叶变换红外分光光度计（FTIR）可显著提高灵敏度和选择性。光谱的计算机辅助分析能够减少基体干扰并比较不同光谱。文中给出了将红外技术应用于石棉水泥制品和绝缘材料的示例。
