10 Şubat 2012 Cuma

contrAA®

 


Analytik Jena brings an innovation on the market — the contrAA® series — which exceeds the performance of conventional AA spectrometers in all parameters.
This new technology — High-Resolution Continuum Source AAS — represents previously unattained effectiveness
and quality of measurement results. Following decades of experience in the development of spectrometers and graphite furnaces and in cooperation with partners from leading research institutes, a vision becomes reality — the start of a new generation in AAS, with the contrAA® series, which finally closes the gap between ICP OES and AAS.

High-Resolution Continuum Source AAS (HR-CS AAS) covers the complete spectral range from the near vacuum-UV to the near infrared with a single continuum source, providing innovative capabilities. For the first time, genuine sequential multi-element analysis is implemented in AAS without the need for a multitude of different light sources.


At first glance:

Maximum versatility and flexibility
Guaranteed stability
Improved accuracy
Maximum information content
Speed for higher efficiency
New level of performance
Fast sequential multi-element determination for flame AAS
Simultaneous background correction
Full post processing of measurement (FPP)


Unique Flexibility
The xenon short-arc lamp as a continuum source is ideal for any element to be analyzed. No matter how frequently or seldom you have to determine an element, the HR-CS AAS instrument is immediately ready for measurement. You have every freedom for line selection, as the source covers the entire continuous wavelength range. All absorbing atom lines are immediately available, irrespective of the emission properties of the HCL (such as windows transmissive to UV or visible radiation). In addition, several new types of lines can be used for analysis.

Immediate Readiness for Measurement
The immediate readiness for measurement provided by HR-CS AAS is due to the fact that the lamp needs no fixed warm-up time to avoid output drift. Innovative correction algorithms continuously compensate any drift or fluctuation of the spectrometer including the source.

Improved Performance
HR-CS AAS features an improved signal-to-noise ratio and markedly better detection limits. This is due to the higher radiation density of the Xe continuum source compared to HCLs, and the enormously increased quantum efficiency of a CCD semiconductor detector compared to the photomultiplier tube commonly used in line-source AAS (LS AAS). HR-CS AAS is the first technique that c an efficiently correct spectral interferences in flame AAS by structured flames or molecule structures. This provides improved simultaneous background correction, and capabilities to correct spectral interferences to increase the accuracy of analytical results
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