ICP-AES see Section

When determining the radioactivity of water samples the quantitative 

The determination of potassium ions in water is carried out by AAS (method 

The gravimetric methods of analysis with perchlorate or tetraphenyl boro-sodium, frequently used in the past, are rarely used today. 

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The sample is introduced into the ICP as a liquid which must usually contain less than 0.1% dissolved solids to prevent salt build-up on the nickel cones (see Section 5.3). This is in contrast to ICP-AES, which can tolerate up to 1% dissolved solids. The sample is converted to an aerosol by means of a pneumatic nebulizer, and the droplets pass through a spray chamber, into the injector tube of the quartz torch and thence into the central channel of the ICP. These processes are identical with those described for ICP-AES (see Section 4.4.3), and the different types of... 

The cation content of the organic samples was determined using ICP-AES (see section 4.6.3 for analytical details). Results are shown in Table 4.6. 

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