Development of a Quantitative Determination Method for Aluminum Ions in Adsorbed Drugs Using Atomic Absorption Spectrometry with Electrothermal Atomization.

A quantitative determination method for Al3+ in immunobiological drugs using atomic absorption spectroscopy with electrothermal atomization was developed. Conditions for the preparation of aluminum hydroxide gel were selected [NaOH (5 M), heating in a boiling-water bath for 5 min followed by neutralization with conc. HNO3]. The method was validated. The analytical range of Al3+ was established in the interval 10 - 50 ig/L. The accuracy and in-laboratory precision were confirmed. The results allowed the proposed method to be considered an alternative for quantitative determination of Al3+ in immunobiological drugs.

[Microbiological Aspects of Radioactive Waste Storage].

The article gives information about the microorganisms inhabiting in surface storages of solid radioactive waste and deep disposal sites of liquid radioactive waste. It was shown that intensification of microbial processes can lead to significant changes in the chemical composition and physical state of the radioactive waste. It was concluded that the biogeochemical processes can have both a positive effect on the safety of radioactive waste storages (immobilization of RW macrocomponents, a decreased migration ability of radionuclides) and a negative one (biogenic gas production in subterranean formations and destruction of cement matrix).