Experience of using atomic-emission spectrometers with MAÉS in an accredited laboratory

A system of the set rules, procedures and regulatory documents is developed in the Central Analytical Laboratory of the JSC «EZ OCM» for the method of atomic emission spectral analysis of precious metals with arc excitation of the spectrum to meet all the requirements of the accrediting body «Rosakkreditatsiya». The features of managing the measuring instruments — spectrometers with MAÉS analyzers, auxiliary equipment and microclimate are considered. The requirements to the personnel of the laboratory for spectral analysis are considered. The rules for developing measurement procedures, instructions for laboratory technicians, measuring programs, methods for performing routine analysis of the samples, and ensuring the traceability of measurement results are specified. The availability of using «ATOM3.3» software for solving everyday problems of the laboratory is shown.

Raman Investigation of Photopolymerization Reactions of Single Optically Levitated Microparticles

Raman spectroscopy was used to investigate polymerization reactions in a single micrometer-sized monomer droplet. An Ar+ laser levitated the microparticles and simultaneously excited the Raman scattering. The polymerization reaction was initiated by exposing the monomer droplets to the UV radiation of a mercury arc excitation lamp. The Raman spectrum of the reacting particle was investigated on-line. The results demonstrate that the combination of the technique of optical levitation and Raman spectroscopy allows nondestructive in situ measurements of single particles and is therefore very useful for the study of fundamental processes.