Table 2. Calculated concentrations of Fe-citrate (FeCit) species for increasing doses of Fe and a constant Fe∶Citrate ratio of 1∶20.

	0,1 µM Fe∶ 2 µM Cit	1 µM Fe∶ 20 µM Cit	5 µM Fe∶ 100 µM Cit	10 µM Fe∶ 200 µM Cit	100 µM Fe∶ 2000 µM Cit
Fe3Cit3 (µM)	6.21×10−7	3.91×10−2	2.4×10−1	3.15×10−1	4.26×10−1
FeCit2 (µM)	1.19×10−3	4.49×10−1	3.95	8.61	94.7
FeCit2H (µM)	5.02×10−5	1.90×10−2	1.67×10−1	3.63×10−1	3.99
FeCitH (µM)	5.90×10−6	2.35×10−4	4.30×10−4	4.71×10−4	5.21×10−5
FeCit2H2 (µM)	1.56×10−7	5.90×10−5	5.19×10−4	1.13×10−3	1.24×10−2
Fe free (µM)	2.16×10−10	9.04×10−10	3.44×10−10	1.89×10−10	2.11×10−11
Cit free (µM)	9.95×10−8	9.44×10−7	4.53×10−6	9.02×10−6	8.97×10−5
H free (µM)	3.98×10−2	3.98×10−2	3.98×10−2	3.98×10−2	3.98×10−2