Abstract
Ethylene diamine tetraacetate calcium disodium salt (EDTA Ca Na2), 1 g dissolved in 250 ml of 5% w/v glucose solution, was infused intravenously over 1 h into 10 healthy subjects (eight males and two females). Urines were collected over 24 h, the day before and on the day of the EDTA Ca Na2 infusion test. The elements Al, B, Ba, Cu, Fe, Mn, Si, Sr, Zn, Na, K, Ca, Mg, S and P were measured by inductively coupled plasma optical emission spectrometry. Pb was measured by inductively coupled plasma mass spectrometry. The EDTA Ca Na2 infusion increased the 24 h elimination of Al from 9.8 micrograms to 58 micrograms, of Fe from 66 to 121 micrograms, of Mn from 2.9 to 16.5 micrograms, of Pb from 9.8 to 56 micrograms and of Zn from 623 to 8847 micrograms. The ratio of the increase of urinary elimination induced by EDTA Ca Na2 was about 2 for Fe, 5 for Al, Pb and Mn, and 15 for Zn.
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