Zastosowanie spektrofotometrii absorpcyjnej w podczerwieni do badania minerałów złóż soli
Abstract
APPLICATION OF ABSORPTION SPECTROPHOTOMETRY IN INFRA-RED OF EXAMINE MINERALS IN SALT DEPOSITS
Summary
The author discusses the use of absorption spectrophotometry in infra-red in the research of salt-gypsum formations. He presents the possibilities of application of this . method . in obtaining auxiliary information concerning the structure of the minerals investigated, the degree of covalence of chemical bonds, and in phase analysis. Numerous spectrograms of minerals of chloride (Fig. 1), sulphate (Fig. 2), carbonate (Fig. 3) and borate (Fig. 4) groups, most popular in salt deposits, as well as composite systems of polymineral nature (Fig. 5) have been compared, and interpretation of the fundamental absorption band has been given. It has also been ascertained that this method is highly useful in phase analysis of salt minerals that contain in their crystal lattice some groups characterized by distinct atomic bonds (sulphates, carbonates, borates). Minerals, in which bonds of ionic character prevail (chlorides), reveal feeble, indistinct bands, scarcely useful in phase analysis. The method is quick and enables the spectrogram of the sample examined to be made during about 20 min., including preparation for examination, using suspension technique.
Summary
The author discusses the use of absorption spectrophotometry in infra-red in the research of salt-gypsum formations. He presents the possibilities of application of this . method . in obtaining auxiliary information concerning the structure of the minerals investigated, the degree of covalence of chemical bonds, and in phase analysis. Numerous spectrograms of minerals of chloride (Fig. 1), sulphate (Fig. 2), carbonate (Fig. 3) and borate (Fig. 4) groups, most popular in salt deposits, as well as composite systems of polymineral nature (Fig. 5) have been compared, and interpretation of the fundamental absorption band has been given. It has also been ascertained that this method is highly useful in phase analysis of salt minerals that contain in their crystal lattice some groups characterized by distinct atomic bonds (sulphates, carbonates, borates). Minerals, in which bonds of ionic character prevail (chlorides), reveal feeble, indistinct bands, scarcely useful in phase analysis. The method is quick and enables the spectrogram of the sample examined to be made during about 20 min., including preparation for examination, using suspension technique.