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Stability of blood samples during blood-lead analysis by graphite furnace-atomic absorption spectrophotometry |
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| Affiliation: | 1. Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Clinical Pharmacology and Toxicology, Embryotox Center of Clinical Teratology and Drug Safety in Pregnancy, Augustenburger Platz 1, 13353 Berlin, Germany;2. Institute of Statistics, Ulm University, Helmholtzstr. 20, 89081 Ulm, Germany |
| Abstract: | Blood-Triton X-100 solutions are used routinely by a number of laboratories to determine the concentration of lead in blood by graphite furnace-atomic absorption spectrophotometry using autosamplers. Some controversy has arisen in the literature concerning whether blood-Triton X-100 solutions are sufficiently stable with respect to settling of blood cells and blood cell fragments to determine lead in blood using autosamplers. This study shows conclusively that blood-Triton X-100 solutions are stable for more than 3 hr. This is ample time to use an autosampler which contains a sample rack with a capacity of up to 50 samples. |
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