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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