Graphite Furnace AAS
The graphite furnace systems from Analytik Jena work with the transverse-heated graphite furnace. Transverse heating is a must where optimum atomization conditions and high sample throughput are required simultaneously. This clearly superior concept guarantees:
- Uniform temperature all along the optical axis throughout the tube
- Minimizing of memory and condensation effects
- Lower atomizing temperatures
- Decreased gas phase interferences
- Linear, rapid heating rates
The problem-free analysis of low-volatility elements (e.g., vanadium, molybdenum), and the direct analysis of solid samples are possible.
Sensorless adaptive temperature control (STC)
STC completely monitors the function of the graphite tube and compares important actual furnace parameters with the settings. Deviations of the tube resistance caused by chemical corrosion and ageing of the graphite material are immediately corrected, and the correct temperature is readjusted.
The temperature inside the graphite tube is monitored and recalibrated by a unique emission-independent, pyrometric quotient method.
A formation routine optimally prepares new tubes for the analyses and checks the overall status of the furnace. Measurements stay comparable over long times.
STPF conzept (StabilizedTemperature Platform Furnace)
The STPF technique implemented in the graphite furnace systems from Analytik Jena enables highest precision, accuracy of the analytical data and best detection limits.
Direct solid AAS – solid AA®
The Analytik Jena graphite furnace systems can be converted from liquid to solids analysis in just a few minutes – the unlimited use of both techniques is guaranteed. All functions are integrated in the operating software. Additional modules are not required. Easy, software-guided routines allow a simpler adjustment of the autosamplers and guarantee a reliable sample supply.
The combination of hydride formation in the hydride system with the electrothermal atomization in the graphite tube opens up completely new perspectives in the detection of hydride forming elements, such as arsenic, selenium or antimony. The advantages of both techniques result in a clear improvement of the detection and determination limits. Moreover, cross-over effects and matrix influences are minimized.