Research Article

The Growth of Monoraphidium sp. and Scenedesmus sp. Cells in the Presence of Thorium

Table 3

Comparison between direct cell counts and software counts.

Days of cultivationMonoraphidium/Scenedesmus (cells/mL)
Blank (no Th addition)Direct countSoftware count

 0 2 . 2 7 𝐸 + 0 4 / 7 . 6 5 𝐸 + 0 4 2 . 0 6 𝐸 + 0 4 / 7 . 2 0 𝐸 + 0 4
 10 2 . 8 1 𝐸 + 0 5 / 1 . 5 7 𝐸 + 0 5 2 . 6 6 𝐸 + 0 5 / 1 . 9 9 𝐸 + 0 5
 30 4 . 2 3 𝐸 + 0 6 / 2 . 2 5 𝐸 + 0 5 1 . 7 8 𝐸 + 0 6 / 3 . 7 6 𝐸 + 0 5

0.5 ppm Th
 10 2 . 2 1 𝐸 + 0 5 / 5 . 7 9 𝐸 + 0 5 1 . 5 7 𝐸 + 0 5 / 4 . 2 7 𝐸 + 0 5
 30 1 . 8 7 𝐸 + 0 6 / 5 . 8 7 𝐸 + 0 5 1 . 1 9 𝐸 + 0 6 / 6 . 6 3 𝐸 + 0 5

1.0 ppm Th
 10 1 . 5 4 𝐸 + 0 5 / 5 . 6 3 𝐸 + 0 5 1 . 7 7 𝐸 + 0 5 / 4 . 4 3 𝐸 + 0 5
 30 1 . 2 9 𝐸 + 0 6 / 5 . 7 8 𝐸 + 0 5 9 . 0 2 𝐸 + 0 5 / 6 . 6 0 𝐸 + 0 5

5.0 ppm Th
 10 2 . 3 2 𝐸 + 0 5 / 4 . 8 3 𝐸 + 0 5 1 . 7 3 𝐸 + 0 5 / 4 . 2 0 𝐸 + 0 5
 30 2 . 6 6 𝐸 + 0 6 / 5 . 1 5 𝐸 + 0 5 1 . 1 0 𝐸 + 0 6 / 6 . 3 0 𝐸 + 0 5

10.0 ppm Th
 10 1 . 3 2 𝐸 + 0 5 / 3 . 1 2 𝐸 + 0 5 1 . 2 2 𝐸 + 0 5 / 4 . 4 7 𝐸 + 0 5
 30 1 . 1 1 𝐸 + 0 6 / 4 . 6 1 𝐸 + 0 5 6 . 8 5 𝐸 + 0 5 / 6 . 7 0 𝐸 + 0 5

25.0 ppm Th
 10 3 . 9 1 𝐸 + 0 5 / 6 . 2 7 𝐸 + 0 5 6 . 8 5 𝐸 + 0 5 / 9 . 9 8 𝐸 + 0 5
 30 2 . 8 6 𝐸 + 0 6 / 7 . 3 2 𝐸 + 0 5 2 . 5 8 𝐸 + 0 6 / 1 . 2 1 𝐸 + 0 6

50.0 ppm Th
 10 4 . 2 7 𝐸 + 0 5 / 4 . 3 2 𝐸 + 0 5 7 . 2 0 𝐸 + 0 5 / 5 . 1 2 𝐸 + 0 5
 30 2 . 1 2 𝐸 + 0 6 / 5 . 2 5 𝐸 + 0 5 2 . 2 7 𝐸 + 0 6 / 4 . 7 0 𝐸 + 0 5

100.0 ppm Th
 10 2 . 7 0 𝐸 + 0 5 / 4 . 2 9 𝐸 + 0 5 1 . 6 8 𝐸 + 0 5 / 3 . 5 9 𝐸 + 0 5
 30 8 . 5 7 𝐸 + 0 5 / 5 . 1 2 𝐸 + 0 5 6 . 6 0 𝐸 + 0 5 / 4 . 1 2 𝐸 + 0 5