Large-Scale Development Programs are Designed to Meet the Challenges of Technology Leadership DOI: 10.22184/2227-572X.2021.11.6.422.427
The New Moscow Office of Sartorius RUS Has Opened Its Doors for Partners and Clients
The First All-Russian Symposium and School-Conference of Young Scientists Physicochemical Methods in Interdisciplinary Environmental Research
Efficient Concentration Methods in Spectral Analysis of High-Purity Substances and Functional Materials DOI: 10.22184/2227-572X.2021.11.6.450.457
or spectral analysis matrix separation by distillation after chemical transformation is an effective way of concentrate impurities. The article shows various techniques of such a process – in one or two stages (for high-purity silicon, germanium and their oxides; oxides of bismuth, molybdenum and tungsten). In the article comparison of the list of determined impurities, LODs (limits of detection), other features of the AES and MS methods with matrix separation by distillation after chemical transformation is carried out. Matrix separation allows to reduce LODs to 10–8 wt.% for their AES determination and to 10–10 wt.% for MS determination. Intralaboratory precision of the developed methods is 0.2–0.3.
Application of High-Performance Liquid Chromatography for Evaluation of Winemaking Products’ Quality: Modern Methodical Approaches DOI: 10.22184/2227-572X.2021.11.6.458.465
The impact of plain caramel (Caramel I-Plain, E‑150a) on the concentrations of furfural (FL) and hydroxymethylfurfural (HMF) in distillates was investigated by the method of high-performance liquid chromatography (HPC). On 52 industrial samples with different geographical origin and aging periods, it was shown that FL and HMF are present in brandy distillates in amounts of 11.0 and 10.5 mg / l, respectively, FL in wine distillates – less than 3.5 mg / l, HMF – is absent. Caramel contains FL and HMF in concentrations in the range from 170 to 12,500 mg / kg. The ratio between the amounts of FL and HMF in authentic distillates exceeds 1.0. Caramel addition shifts this ratio to values less than 1.0. The presented approach is used in a general analytical and expert algorithm for identification of component composition of winemaking products established in the National Standard GOST P 59570-2021.
The New Approach to Improving the Accuracy of Elemental Analysis by Inductively Coupled Plasma Optical Emission Spectrometry DOI: 10.22184/2227-572X.2021.11.6.466.471
Information on advanced technologies and intelligent software products implemented in the new models of Agilent 5800 and 5900 ICP-OES optical emission spectrometers with inductively coupled plasma, which provide a completely new approach to improving the accuracy of analysis of samples of different nature and composition is presented. Analyzing real samples on the Agilent 5800 and 5900 ICP-OES using the intelligent IntelliQuant software suite quickly collects semi-quantitative data for elements across the entire spectral range and provides comprehensive information about the composition of the sample. After completing a full spectrum study, IntelliQuant validates the data and automatically determines the optimal wavelength for quantitative analysis of each element. Methods for the selection of emission lines taking into account the composition of the matrix and spectral interferences are described. The methods of visualization of the elemental composition using the heat map of the Periodic Table and the smart diagram are noted. Examples of the application of a new software product for the analysis of soil samples with aluminum additives are given.
Extraction, Purification and Concentration of Palladium From New Raw Material Sources Based on Spent Nuclear Fuel DOI: 10.22184/2227-572X.2021.11.6.472.478
The urgency of expanding the raw material base of platinum metals through the reprocessing of spent nuclear fuel (SNF) is shown. A review of promising methods for the extraction, purification and concentration of platinoids is carried out. The necessity of searching for new extraction reagents and improving the previously proposed technological schemes for obtaining acutely deficient palladium and other noble metals from spent nuclear fuel have been substantiated.
Polymorphism of Tristearin Active pharmaceutical ingredients, fats, oils, metals, salts and many other materials can exist in various crystalline forms. This phenomenon is called polymorphism. In this article, using the example of tristearin, it is shown that polymorphic materials can be investigated using Differential Scanning Calorimetry (DSC).
Teaching Analytical Chemistry to Students Pharmaceutical Specialty Faculty of Fundamental Medicine of Lomonosov Moscow State University DOI: 10.22184/2227-572X.2021.11.6.492.498
The features of the pharmaceutical specialty within the training of students of the Faculty of Fundamental Medicine of the Lomonosov Moscow State University. The most important aspects of teaching analytical chemistry to pharmacy students are discussed: orientation of the general course of analytical chemistry to future professional activities; development of new elective courses aimed at the specialized study of individual physical and chemical methods; research work dedicated to the development of new analytical approaches for solving pharmaceutical problems.