CHEMISTRY GLOSSARY

electroanalytical chemistry    →   elektroanalitička kemija

Electroanalytical chemistry chemistry is the application of electrochemical cells and electrochemical techniques for chemical analysis. The analyte is dissolved in the electrolyte of the cell, and one can perform either qualitative analysis (determination of the type of constituents present) or quantitative analysis (determination of the amount of a given constituent).

equivalence point    →   točka ekvivalencije

Eequivalence point is the point in a titration when enough titrant has been added to react completely with the analyte.

gravimetrical factor    →   gravimetrijski faktor

Gravimetrical factor is stechiometric proportion between molar mass of analyte and molar mass of precipitate in gravimetry.

Jones’s reductor    →   Jonesov reduktor

Jones’s reductor is a column filled with zinc amalgam. It is used for analyte reduction.

Curie    →   Curie

Maria Sklodowska-Curie (1867-1934) Polish-born French chemist who went to Paris in 1891. She married the physicist Pierre Curie (1859-1906) in 1985 and soon began work on seeking radioactive elements other than uranium in pitchblende (to account for its unexpectedly high radioactivity). By 1898 she had discovered radium and polonium although it took her years to purify them. In 1903 the Curies shared the Nobel Prize for physics with Henri Becquerel, who had discovered radioactivity.

dropping mercury electrode    →   kapajuća živina elektroda

Dropping mercury electrode (DME) is a working electrode arrangement for polarography in which mercury continuously drops from a reservoir through a capillary tube (internal diameter 0.03 - 0.05 mm) into the solution. The optimum interval between drops for most analyses is between 2 and 5 s. The unique advantage to the use of the DME is that the constant renewal of the electrode surface, exposed to the test solution, eliminates the effects of electrode poisoning.

electrophoresis    →   elektroforeza

Electrophoresis is a technique for the analysis and separation of colloids, based on the movement of charged colloidal particles in an electric field. The migration is toward electrodes of charge opposite to that of the particles. The rate of migration of the particles depends on the field, the charge on the particles, and on other factors, such as the size and shape of the particles.

Electrophoresis is important in the study of proteins. The acidity of the solution can be used to control the direction in which a protein moves upon electrophoresis.

laboratory    →   laboratorij

Laboratory is a specially equipped room used for conducting experiments, analysis, measurements and scientific research.

masking reagent    →   maskirajući reagens

Masking reagent reacts with sample components which can increase the analysis results.

microanalysis    →   mikroanaliza

Microanalysis is a sum of analytical procedures used for researching of very small quantities of matter (around 1 mg).