. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Colloids Surf B Biointerfaces. 2014 May 12;119:106–114. doi: 10.1016/j.colsurfb.2014.04.027

Table 3.

Average hydrodynamic diameters (D_H in nm) of 2-MEA, PEG 2K and PEG 10K SPIONs over 12 h in pH 9 buffer solution, DMEM, and DMEM + BCS, at two different concentrations (100 and 500 ppm Fe), measured by DLS.

			0 h	2 h	4 h	8 h	12 h
2-MEA	pH 9	100 ppm	135	132	126	132	125
	pH 9	500 ppm	127	127	121	124	125

	DMEM	100 ppm	442	728	738	720	722
	DMEM	500 ppm	815	957	974	988	909

	DMEM + BCS	100 ppm	229	232	220	235	232
	DMEM + BCS	500 ppm	242	255	254	258	269

PEG 2K	pH 9	100 ppm	145	161	165	159	142
	pH 9	500 ppm	142	141	146	145	152

	DMEM	100 ppm	562	730	721	796	830
	DMEM	500 ppm	919	1034	973	1098	1058

	DMEM + BCS	100 ppm	226	238	224	226	227
	DMEM + BCS	500 ppm	245	259	253	251	263

PEG 10K	pH 9	100 ppm	109	114	120	118	113
	pH 9	500 ppm	125	129	122	125	127

	DMEM	100 ppm	690	820	851	825	798
	DMEM	500 ppm	823	837	869	1137	1027

	DMEM + BCS	100 ppm	218	219	217	214	212
	DMEM + BCS	500 ppm	233	247	235	244	257