Nebulisers Babington nebuliser

Figure 2.11 Basic design of a Babington nebuliser showing the simple operation. (Reproduced with kind permission from E-POND S.A., C.P. 389, CH-1800 Vevey, Switerzerland)...

Another kind of nebuliser, the Babington type, is used for handling slurries that can contain up to 10 per cent solids. This design of nebuliser is less likely to suffer from blockage. 

The on-line interface of flow manifolds to continuous atomic spectrometric detectors for direct analysis of samples in liquid form typically requires a nebuliser and a spray chamber to produce a well-defined reproducible aerosol, whose small droplets are sent to the atomisation/ionisation system. A variety of nebulisers have been described for FAAS or ICP experiments, including conventional cross-flow, microconcentric or Babington-type pneumatic nebulisers, direct injection nebuliser and ultrasonic nebulisers. As expected, limits of detection have been reported to be generally poorer for the FIA mode than for the continuous mode. 

Figure 2.9 Overview of sample introduction methods and hyphenated techniques used in ICP-AES. (A) Pneumatic concentric (sometimes called the Meinhard nebuliser) (B) Babington (C) fritted disc (D) Hildebrand nebuliser (E) cross flow (G) standard ultrasonic nebuliser for aqueous and non-aqueous solvents (H) electro-thermal graphite ( ) electro-thermal carbon cup (K) graphite tip filament (L) laser ablation (M) hydride generation (P) flow injection...

The development of the Babington [10] cross flow nebuliser allowed samples containing high salt content and slurries (max. 20 pm) to be analysed with considerable ease. 

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