Description
Atomic absorption spectrometer with electrothermal atomization MGA-915MD
Electrothermal atomization of a sample in a heated graphite tubular cell with a Lvov platform , with correction of non-selective spectral noise based on the use of the Zeeman effect.
Designed to measure the content of elements in a wide range of objects. This device has the highest efficiency in the analysis of samples with a complex matrix composition: sea water, blood, urine. Direct analysis of samples without prior preparation is possible.
Main applications:
- environmental control: measurement of the content of elements in water, soil, bottom sediments, atmospheric air, as well as tissues of plant and animal origin;
- medicine and veterinary laboratories : analysis of tissues and fluids of biological origin (blood, urine, hair, animal products, etc.)
- controlling and certifying laboratories : analysis of food and feed, analysis of waste, natural, drinking water and air;
- quality control of alcoholic products : the content of a wide range of elements in alcoholic beverages and the determination of authenticity;
- forensics : identification of impurities and trace elements.
It is also used in geological exploration, metallurgical industry, scientific research.
The basic equipment of the MGA-915MD includes:
- automatic monochromator;
- automatically adjusted six-lamp turret;
- local cooling system.
The spectrometers can be equipped with an autosampler and a RGP-915 mercury-hydride attachment for the analysis of mercury and hydride-forming elements.
Hollow cathode lamps and high-intensity electrodeless discharge lamps are used as light sources.
Spectral interference correction
High selectivity is associated with the use of Zeeman modulation polarization spectrometry. This correction of non-selective absorption (background signal attenuation) is recognized throughout the world as a “reference method” for the determination of small contents of elements in samples of complex composition.
Specifications MGA-915MD
Spectral interference correction | Zeeman effect | |
Radiation sources | hollow cathode spectral lamps,
spectral high-frequency lamps (electrodeless) |
|
Lamp change | automatic, lamps are installed in the turret | |
Spectral range, nm | from 190 to 800 | |
Spectral resolution, nm. | 2 | |
Limit of detection of manganese, pg, no more | 3 | |
Nickel detection limit, pg, max | 20 | |
Sample submission | built-in autosampler or manual dispensing | |
Monochromator | auto | |
Atomizer | ||
graphite cuvette | with Lvov platform, pyrolytic coating | |
Shielding gas | argon | |
Argon consumption, l/min, | no more than 1.0 | |
Power consumed by the spectrometer in the modes of atomization and purification, kV*A, not more than: | 18 | |
Overall dimensions, mm | 800 x 570 x 390 | |
Weight, kg | 75 |