Table 2. Removal of Cr from Fibers at pH 7.4 during Preconditioning with 1 mmol L^–1 Ligand or Blank Solutions for 336 h (First Column) and during Interaction of the Pristine and Preconditioned Fibers with a 3.3 g L^–1 H₂O₂ Solution (Second Column) or a 1 mmol L^–1 DFOB Solution (Third Column) for 336 h^a.

	Cr removal during preconditioning with or without ligands	Cr removal from (preconditioned) fibers by 3.3 g L–1 H2O2	Cr removal from preconditioned fibers by 1 mmol L–1 DFOB
	[μmol g–1]	[μmol g–1]	[μmol g–1]
pristine fibers		2.3 (0.0)
DFOB-altered fibers	0.7	2.0 (0.1)	0.5 (0.1)
DTPA-altered fibers	1.9 (0.1)	1.7 (0.1)
EDTA-altered fibers	2.2 (0.2)	1.9 (0.1)
blank-altered fibers	0	2.1 (0.1)

^aValues in round braces indicate standard deviations (n = 2). Standard deviations could not be determined for fiber preconditioning carried out in a single container.