Synthesis and characterization of asbestos–silane hybrid materials

Diffuse Reflectance Infrared Fourier Transform Spectroscopy for the Determination of Asbestos Species in Bulk Building Materials

“…LCM is commonly used in quantitative chemistry, and it has been adopted successfully for the determination of asbestos in bulk materials by means of XRD [ 20 ]. This analytical procedure can be also used in DRIFT quantitative spectrometry; also in this case, the curves are obtained by plotting the height of the absorption peak, h M , as a function of the concentration, C x ( w / w ), of the analyte, but sample mixtures contain known quantities of a given standard of asbestos together with one or two materials that mimic a matrix (in our case, a commercial concrete; see also the Experimental section) [ 16 , 45 ]. Since the standard is not added, but it is used as a sample itself, LCM is an external standard method, and it can work well only if the standard is really the same material as that contained in the ACM.…”

“…Several studies have demonstrated that FTIR is suitable for the quantification of micrograms of different kinds of asbestos in host matrices, and the FTIR limit of detection could be even less than 1% w / w in the case of bulk samples [ 14 , 15 ]. For these reasons, although samples require careful pre-treatment before analysis, FTIR could be an alternative approach with respect to other used techniques [ 16 – 19 ]. In our recent paper, we have compared different analytical FTIR procedures for a low content of asbestos in bulky materials [ 20 ], also focusing our attention on sample preparation: classic FTIR measurements are done on powders dispersed in potassium bromide (KBr), which is transparent to infrared radiation.…”