Abstract
A commercially available sample-injection valve (manual version) has been coupled to the nebulizer of a premixed laminar-flow burner on an atomic absorption spectrometer for metal analysis in volumes of 50–500μl. For 500-μl samples statistical analysis showed an overall coefficient of variation of 1.7% for readings from the peak height facility of a digital read-out unit. In order to obtain reproducible results with 50-μl samples (overall coefficient of variation of 4.3%) it was necessary to use the peak height data obtained from a pen-recorder connected to the digital read-out unit.
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