Brief Outline of Atomic Spectroscopy Hyphenated Systems

3 Brief Outline of Atomic Spectroscopy Hyphenated Systems 

The advantage of vapour introduction over liquid introduction is that ETV allows preconcentration of the sample from a reasonably large sample size or volume of solution and with efficiency as high as 90-100% the detection limits would be considerably improved. This system finds many applications for the analysis of samples for arsenic, 

A major problem with laser ablation is that it is very difficult to generate accurate calibration and requires close matrix matched standards that are not available for real sample analysis. A useful application is comparison between good and bad samples that could give information about matrix properties. This will be discussed in detail in Chapter 7. 

The basic principle of hydride generation is the conversion into volatile hydrides by use of the sodium borohydride as a reducing agent. The hydride can then be readily dissociated into atomic vapour by ICP-OES. 

In the presence of basic borohydride in acidic solution, excess hydrogen is formed as follows  

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