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Table 1 Physicochemical characteristics of pristine Ag ENMs

From: Is the toxic potential of nanosilver dependent on its size?

Name Ag ENMs 50 nm Ag ENMs 80 nm Ag ENMs 200 nm
Shape quasi spherical quasi spherical quasi spherical
Concentration    
[% wt/wt] 1 1 1
[ENMs/ml] 3.91×1013 1.03×1013 1.94×1012
Specific surface area [m 2 /g] 1.37 × 101 7.56 3.87
Size/ size distribution & aggregation/ agglomeration state [ nm] DLS: 74.5 ± 1.2 DLS: 101.3 ± 1.5 DLS: 272.5 ± 2.2
PDI= 0.130 PDI= 0.115 PDI= 0.136
TEM: d50 = 55; d90 = 62 TEM: d50 = 78; d90 = 96 TEM: d50 = 168; d90 = 255
AC: d50 = 43; d90 = 78 AC: d50 = 77; d90 = 100 AC: d50 = 150; d90 = 380
Crystal structure cubic cubic cubic
Surface Chemistry [Atom%] XPS: XPS: XPS:
C:48.6, Ag:25.6, O:15.9, N:7.7, Na:2.2 C:59.1, O:17.5, Ag:15.9, N 7.5 C:58.1, O:18.0, Ag:15.4, N:7.5, Na:1.0
SIMS: SIMS: SIMS:
Ag, Na, K, Ca, CxHyOz Ag, Cl, CxHyOz Ag, Na, K, CxHyOz
Surface charge [mV] - 17.5 ± 0.5 - 12.5 ± 0.5 - 5.5 ± 0.5
pH 5.9 5.9 6.0
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