Determination of lead in the urine of exposed and unexposed adults by extraction and flow-injection/atomic absorption spectrometry |
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| Authors: | José Luis Burguera Marcela Burguera Luis La Cruz O Olga Raquel Naranjo |
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| Affiliation: | Departamento de Química, Facultad de Ciencias, Universidad de Los Andes, Apartado 542, Mérida 5101-A Venezuela;Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad de Los Andes, Mérida 5101-A Venezuela |
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| Abstract: | Lead is extracted from urine with ammonium pyrrolidien dithiocrbamate into methyl isobutyl ketone, and 20 μl of the extract is injected into a water carrier stream in a flow-injection/atomic absorption system. The procedure is simple, quick, accurate and reproducible. Recoveries are 96–105%. The mean urine lead contents of 20 unexposed and 20 printing-press lead exposed workers was found to be 39.0 ± 8.3 and 71.7 ± 26.3 μg Pb l?1, respectively. |
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