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. 2021 Dec 9;10(12):1308. doi: 10.3390/biology10121308

Table 2.

Concentration of pigment red 170 in test solutions of tattoo ink and uptake determination in Xenopus laevis and Daphnia magna. Data are presented as average ± standard deviation (SD).

Nominal Concentration before Treatment (mg/L) Concentration (from UV-Vis Analysis)
before Treatment
(mg/L) ± SD
Concentration (from UV-Vis Analysis)
after Treatment
(mg/L) ± SD
Uptake (%)
Xenopus laevis
10.0 9.2 ± 0.2 4.1 ± 0.4 55.4
20.0 17.3 ± 0.3 2.1 ± 0.2 87.9
Daphnia magna
10.0 9.9 ± 0.4 8.1 ± 0.5 18.2
20.0 19.8 ± 0.3 15.2 ± 0.6 23.2