Open AccessИсследование структуры бивня мамонта методом ИК спектроскопии
Author(s) -
В.В. Павлова,
Е.С. Петухова,
Т.А. Исакова,
Е.С. Колесова,
А.А. Чириков,
Ф.Ф. Протопопов
Publication year - 2022
Publication title -
optika i spektroskopiâ
Language(s) - English
Resource type - Journals
eISSN - 2782-6694
pISSN - 0030-4034
DOI - 10.21883/os.2022.03.52164.2643-21
Subject(s) - carbonate , infrared spectroscopy , stoichiometry , infrared , amide , materials science , solid state , mineralogy , chemistry , polymer chemistry , nuclear chemistry , organic chemistry , metallurgy , physics , optics
The structure of mammoth tusk was investigated by infrared spectroscopy, including after heat treatment. The whole complex of functional groups of the tusk components - hydroxyapatite, collagen and water - was revealed. It was found that collagen in the IR spectrum is represented mainly by characteristic absorption bands of amide and aliphatic groups. After heat treatment at 600 °C, the organic part is completely removed from the sample. It was found that hydroxyapatite in mammoth tusk is presented in a carbonate-substituted form, however, heat treatment at 900 °C leads to the removal of carbonate anion and water from the sample, which is accompanied by the transition of hydroxyapatite from the nonstoichiometric state to the stoichiometric state.