Lead preconcentration with flow injection for flame atomic absorption spectrometry |
| |
Authors: | S.R. Bysouth J.F. Tyson P.B. Stockwell |
| |
Affiliation: | Department of Chemistry, University of Technology, Loughborough, Leicestershire, LE11 3TU Great Britain;PS Analytical Ltd. Arthur House, Cray Avenue, Orpington, Kent, BR5 3TR Great Britain |
| |
Abstract: | The flow-injecton preconcentration of lead with immobilised reagents under a variety of conditions is discussed. Timed sample loading and matrix removal without passing the matrix to the nebuliser were achieved simply with one valve. Reagent consumption and calibration time were reduced by the addition of further valves. A system design incorporating control of the timing of operations by a commercial autosample is described. The effects of pH and interferent ions were examined. Water samples were analysed against aqueous standards and as standard additions solutions. For an analysis time of about 3 min a preconcentration factor of about 40 was obtained for both peak height and area measurements. Detection limits of down to 1.4 ml?1 were obtained. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|