Hydrofluoric acid pre-treatment of matte artists’ paints for binding medium analysis by Fourier transform infrared microspectroscopy

Mansfieldite (AlAsO4·2H2O): a new white pigment in Himalayan artwork

“…6b. 6 This compares favorably in the amide stretching region with a similarly treated mockup sample of gelatin, Fig. 6c.…”

“…To remove interfering mid-IR bands from inorganic compounds (carbonates, clays, silicates), microsamples of paint were treated with 10% HF in the vapor phase according to the procedure by Smith et al prior to FTIR analysis. 6…”

Identification of Synthetic Organic Pigments in Contemporary Artists’ Paints by FT-IR and FT-Raman: An Advanced Analytical Experiment

“…For inorganic fillers: After partial elimination of the binder, calcite is at least partly removed by dropping a 6% HCl aqueous solution on the paint sample. In the literature, the removal of silicate fillers from artistic paint samples by use of HF is proposed, but for safety reasons it is preferable to avoid it in an experiment intended for undergraduate students. As it will be shown, a satisfying identification of the pigment is nevertheless possible because of the combination of the two vibrational spectroscopies. …”

Material Test on Strain Fracture and Crack Opening Displacement Based on Digital Image Correlation Method

“…The spraying order has great impact on the quality of the speckle pattern. Firstly, white flat lacquer was sprayed onto the specimen surface as a base color [14]. Then, black flat lacquer was sprayed to form equally distributed black spots on the white under layer.…”