Continuum source atomic absorption spectrometer for flame and hydride techniques expands the field of atomic spectrometry
Continuum source AAS (CS AAS) covers the complete spectral range from the near vacuum-UV to the near infrared with a single continuum source, providing innovative capabilities.
Analytik Jena USA says that, for the first time, genuine sequential multi-element analysis is implemented in AAS without the need for a multitude of different light sources.
The xenon short-arc lamp as a continuum source is said to be ideal for any element to be analysed.
No matter how frequently or seldom you have to determine an element, the CS AAS instrument is immediately ready for measurement says the company.
Users 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. Maximum versatility and flexibility, guaranteed stability, improved accuracy, maximum information content, speed for higher efficiency, new level of performance.
The immediate readiness for measurement provided by 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 of fluctuation of the spectrometer including the source.
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).
CS AAS is said to be the first technique that can 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.
The simultaneous double-beam mode using a single optical path (simultaneous reference measurement with automatic pixel referencing) substantially increases the accuracy of measurements.
