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[Determination of trace cadmium in human hair, fingernail and toenail for ten years by flame atomic absorption spectrometry].

The human hair, fingernail and toenail were collected from one person quarterly for about ten years, respectively thirty-three, forty-one and thirty-nine shares. The contents of traces cadmium in hair, fingernail and toenail have been determined by flame atomic absorption spectrometry, and the results were satisfactory. From a changing curve in human hair, fingernail and toenail cadmium by age, we found that the range of cadmium contents in hair was 0.0100-0.4100 microgram.g-1, in fingernail 0.0295-0.5314 microgram.g-1, in tene-nail 0.0899-1.274 micrograms.g-1, respectively. In the changing curve there is a nonlinear characteristic.