Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10558602 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2005 | 5 Pages |
Abstract
A cold vapour (CV) generation system incorporating a modified version of a Multimode Sample Introduction System (MSISâ¢) was investigated for the determination of cadmium by atomic absorption spectrometry (AAS). The system allowed for the use of the relatively high concentrations of reagents required for efficient production of volatile cadmium without the significant bubbling, frothing, and associated liquid transport problems common to conventional gas-liquid separators while maintaining a low volume. The low volume produced narrow peaks (approximately 5 s base peak width). A detection limit of 0.026 μg Lâ1 (3s) was found with a precision of 2.5% for a 0.5 μg Lâ1 standard (n=4) and a linear dynamic range up to approximately 10 μg Lâ1. The addition of thiourea, cobalt, and nickel was found to overcome interferences and produce good agreement between experimental and certified values for Natural Water and Mussel Tissue standard reference materials (SRM).
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Eric T. Ritschdorff, Neil Fitzgerald, Roger L.J. Mclaughlin, Ian D. Brindle,