Results: Samples were just diluted with 0.2% v/v Triton X-100, and pyrolysis and atomization temperatures
of 1300 and 2200 °C were used. External calibration was performed with matrix matched calibration solutions.
Limits of detection of 2.7 and 0.8 μg L−1 were reached for blood and urine, respectively. The method was
applied to the determination of Sn in blood and urine of eleven subjects not occupationally exposed, working
in a laboratory of toxicology in a large Brazilian city, and the results ranged from 7.4 to 11.2 μg L−1 and ≤0.8
to 2.2 μg L−1, for blood and urine, respectively. Accuracy was assessed by analysis of standard reference materials
for tin in blood (Contox I, lot TM144-1097, Kaulson Laboratories, USA) and urine (Seronorm, lot 0511545,
Sero AS, Norway).