CL. Analytics

Atomic absorption analysis is widely used in many industries and science. The laboratory is equipped with Perkin Elmer instruments: Aanalyst-600 (2001) and PinAacle 900Z (2018). The Zeeman background correction is used in them. Main advantages of these instruments are:

 - the built-in electrothermal atomizer (ETA) unit with longitudinal (HGA) and transverse (THGA) direct current heating ensures the independence of measurement results from external conditions, including the influence of the matrix and voltage fluctuations in the electric network;

 - the ability to analyze organic solutions that is of great importance in the sample analyzing for noble metal contents, since organic solvents are used for their concentration;

 - complete computer control of the spectrometer and all major attachments using a proprietary software package provides not only the simplicity of operations, but also the processing and storage of all data in accordance with GOST R ISO/IEC 17025-2000 “General requirements for the competence of testing and calibration laboratories”.

PinAacle 900Z atomic absorption spectrometer

The CL uses the methodology developed and certified at the VSEGEI CL: “Determination of noble metals (gold, platinum and palladium) in ore, rock, soil, bottom and loose sediment samples by atomic absorption spectrometry with electrothermal atomization”. VSEGEI CL MP No. 16/2014, third category of accuracy.

Concentration ranges of elements determined in accordance with this technique

Cold vapour technique

Atomic absorption spectrometry without a flame or graphite furnace (cold vapour technique) is used to determine the mercury concentration. The analysis is performed on a stand-alone RA-915 M mercury analyzer (OOO Lumex-Marketing) according to the “Methodology for measuring the mass fraction of total mercury in soil, ground, including from greenhouses, clay and bottom sediment samples by atomic absorption using RA-915 M mercury analyzer.” PND F 16.1: 2: 2.2.2.80-2013 (M 03-09-2013). Preliminary sample decomposition is not required.
The lower determination limit for solid samples is 0.005 ppm.

RA-915M mercury analyzer with the PIRO 915+ attachment