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Table 2 Zeta-average (Zave) and polydispersivity index (PDI) of the instillation mediums as measured by dynamic light-scattering

From: Epoxy composite dusts with and without carbon nanotubes cause similar pulmonary responses, but differences in liver histology in mice following pulmonary deposition

Dose 486 μg 162 μg 54 μg 18 μg
Samplec Zave (nm) σ PDI σ Zave (nm) σ PDI σ Zave (nm) σ PDI σ Zave (nm) σ PDI σ
CNT–1      142 ±6a 0.400 ±0.019 119 ±1 0.269 ±0.008 111 ±1 0.295 ±0.024
CNT–2      139 ±4a 0.389 ±0.023 116 ±2 0.369 ±0.016 164 ±6 0.471 ±0.076
CNT–3              140 ±2 0.415 ±0.012
EPOXY-REF–1 d831 ±97b 0.311 ±0.037 d1212 ±118b 0.424 ±0.017 d831 ±97a 0.281 ±0.026     
EPOXY-REF–2      d858 ±172b 0.228 ±0.080         
EPOXY-CNT–1 d1197 ±81a 0.464 ±0.067 d1035 ±50b 0.480 ±0.026 d958 ±113a 0.465 ±0.045     
EPOXY-CNT-2      d1090 ±104b 0.445 ±0.029         
EPOCYL–1 d857 ±98b 0.416 ±0.042 d883 ±71b 0.477 ±0.033 d755 ±111b 0.402 ±0.049     
EPOCYL–2      d785 ±59b 0.458 ±0.054         
CB–1      87.5 ±0.4 0.205 ±0.008         
CB–2      90.1 ±0.3 0.182 ±0.008         
  1. aThe suspension was slightly unstable with less than 5 % change in derived count rate during measurement
  2. bThe suspension was highly unstable with more than 5 % change in derived count rate during measurement
  3. cThe numbers refer to different determinations of the same sample
  4. dUpper size of particles in the sample exceeded the upper sizing-range of the DLS