Skip to main content

Table 2 The accuracy (%) of the UV-Vis spectrophotometer technique when measuring CNM concentration

From: Carbon nanomaterial-derived lung burden analysis using UV-Vis spectrophotometry and proteinase K digestion

CNMs Target concentration (μg/mL)
10 20 30 300a
CB
 Measured 9.53 ± 0.28 19.37 ± 0.66 28.76 ± 0.47 285.49 ± 1.04
 Accuracy % 95.3 ± 2.84 96.8 ± 3.33 95.8 ± 1.57 95.1 ± 0.34
ND
 Measured 9.51 ± 0.26 19.07 ± 0.76 28.52 ± 1.03 286.06 ± 4.05
 Accuracy % 95.1 ± 2.61 95.3 ± 3.82 95.0 ± 3.43 95.3 ± 1.35
MWCNT
 Measured 9.69 ± 0.18 19.29 ± 0.57 28.75 ± 1.11 285.12 ± 4.55
 Accuracy % 96.9 ± 1.84 96.4 ± 2.85 95.8 ± 3.70 95.0 ± 1.51
CNF
 Measured 9.42 ± 0.56 19.03 ± 0.57 28.69 ± 1.06 286.04 ± 2.22
 Accuracy % 94.2 ± 5.67 95.1 ± 2.88 95.6 ± 3.55 95.3 ± 0.74
GNP
 Measured 9.63 ± 0.11 19.48 ± 0.87 29.22 ± 1.10 289.88 ± 9.92
 Accuracy % 96.2 ± 1.12 97.4 ± 4.37 97.4 ± 3.68 96.6 ± 3.30
  1. The accuracy (%) was calculated by comparison with the target concentration weighed during sample preparation
  2. aThe target concentrations were selected as 10, 20, and 30 μg/mL for non-diluted samples and 300 μg/mL for samples needed dilution
  3. The data are presented as mean ± SEM from four independent measurements