Trace enrichment and measurement of platinum by flow injection inductively coupled plasma mass spectrometry |
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Authors: | M M Hidalgo M M Gómez and M A Palacios |
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Institution: | (1) Departamento de Química Analítica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain |
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Abstract: | A flow injection system incorporating an alumina microcolumn has been coupled to inductively coupled plasma mass spectrometry (ICP-MS) for on-line preconcentration and determination of platinum (IV) in natural waters. Depending on the nature of the sample, a nominal preconcentration factor of up to 600 can be achieved by eluting with 50l of 2 mol/l NH4OH. The limit of detection after a 5 min preconcentration time was 4 ngl-1, with a relative standard deviation of 4% (100 ngl-1 working solution). The proposed method was assessed for the determination of platinum (IV) in natural waters, motor car exhaust and some common analytical reagents. |
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