Trace analysis by optical emission spectrometry by microwave excitation of sealed samples has been improved by use of H(2) as a filler-gas and of BiI(3) as a matrix. It was found that the selection of suitable quartz for the manufacture of the discharge lamps is important. Limits of determination of 4 pg in 0.5 ml may be obtained for In, Tl and Cd.
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| http://dx.doi.org/10.1016/0039-9140(74)80127-x | DOI Listing |
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