caa a22 4500 463172515 CHVBK 20180406164817.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10717-007-0030-7 doi (NATIONALLICENCE)springer-10.1007/s10717-007-0030-7 Medvedev E. Russian Federal Science Center, Russia aut Salient features of infrared spectral analysis of a glass-forming batch containing boric and silicic acids [Elektronische Daten] [E. Medvedev] The results of IR spectroscopy of boric and silicic acids, which are the main components of the batch for fabricating microspheres, are presented. It is proved that the structure of boric and silicic acids contain water in molecular form (crystal-hydrate) and as OH groups, respectively. A formula is given for calculating the absolute degree to which the bands differ with respect to wave number and intensity. It is shown that half of the spectral bands of both acids can be used only conditionally to indentify the acids, and almost a third of these bands are the main (strongest) bands. The bands at 1195 cm−1 in the spectrum of boric acid and 1180 and 1200 cm−1 in the spectrum of silicic acid are indistinguishable with respect to position and intensity and cannot be used for analysis. The wave number is a necessary and sufficient indicator for identifying the acids in the mix, but in the case of the conditionally used bands analysis of a mixture of acids is impossible if their intensity is neglected. Springer Science+Business Media, Inc., 2007 Glass and Ceramics Springer US 64/3-4(2007-03-01), 115-119 0361-7610 64:3-4<115 2007 64 10717 https://doi.org/10.1007/s10717-007-0030-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10717-007-0030-7 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Medvedev E. Russian Federal Science Center, Russia aut NATIONALLICENCE 773 0- Glass and Ceramics Springer US 64/3-4(2007-03-01), 115-119 0361-7610 64:3-4<115 2007 64 10717 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer