Changes of partial macroelements in urine of environmentally Cd-exposed inhabitants

  Objective   To observe the changes of partial urinary macroelements of inhabitants longing-term environmentally exposed to cadmium.

  Methods   Five macroelements in urinary samples from control and Cd-exposed population living in a region of east China was detected by means of proton induced x-ray emission(PIXE)simultaneously and cadmium in the local soil, rice, and the serum, urine of the subjects were detected by graphite-furnace absorption spectrophotometry(GFAAS).

  Results   Compared with control group, significantly increased excretion of calcium, phosphor, chlorine in urine of Cd-exposed group were observed(P < 0.05), in which chlorine was twenty six times as much as that of control one.There were correlations between serum Cd and five macroelements respectively and partial correlations between urinary Cd and phosphor, sulfphur, chlorine, respectively.

  Conclusion   Long-term exposure of Cd may promote excretion of urinary calcium, phosphor, chlorine, except for sulfphur and potassium.Urinary chlorine may be a sensitive index for environmental cadmium-exposed population.