The concentrations of lead and the isotopic ratios of lead, 206Pb:207Pb, were measured by inductively coupled plasma-mass spectrometry in environmental specimens, cosmetics and traditional remedies. The ratios were compared with those found in blood samples of Saudi children who had increased concentrations of total blood lead. The isotopic ratios in the blood specimens (1·144±0·027) were not significantly different from those determined in cosmetics and remedies (1·152±0·031) and indicated that these were the likely sources of exposure rather than the lead contained in petrol which had an isotopic ratio of 1·207.
Al-SalehAA. Lead exposure among children in Saudi Arabia. PhD Thesis, University of Surrey, 1991.
2.
YaffeYFlesselCPWesolowskiJJ. Identification of lead sources in California children using the stable isotope ratio technique. Arch Environ Health1983; 38: 237–45.
3.
DelvesHTCampbellMJ. Measurements of total lead concentrations and of lead isotope ratios in whole blood by use of inductively coupled plasma source mass spectrometry. J Anal Atomic Spectr1988; 3: 343–8.
4.
CampbellMJDelvesHT. Accurate and precise determination of lead isotope ratios in clinical and environmental samples using of inductively coupled plasma source mass spectrometry. J Anal Atomic Spectr1989; 4: 235–6.
5.
McKenzieT. Analytical data for the GTA-95. In: RotheryE ed. Analytical Methods for the Graphite Tube Atomizer. Victoria, Australia: Varian Techtron Pty Ltd., 1982; 86–8.
6.
ChowTJJohnstoneM. Lead isotopes in gasoline and aerosols of Los Angeles basin, California. Science1965; 147: 502–3.
7.
AultWVSenechalRGErlebachWE. Isotopic composition as a natural tracer of lead in the environment. Environ Sci Technol1970; 4: 305–13.
8.
MantonWI. Sources of lead in blood. Identification by stable isotopes. Arch Environ Health1977; 32: 149–59.
9.
FacchettiS. Isotope study of lead in petrol. In: International Conference Management and Control of Heavy Metals in the Environment. Edinburgh: CEP Consultants, 1979.
