Chapter 9

In vitro assays for the risk assessment of chemicals


In the Excel sheet “9E1Exercise Dosing” you can find the physicochemical properties of the three chemicals caffeine, bisphenol A and benzo(a)pyrene.
You should test all three chemicals in the AREc32 and the PPARγ bioassay as single chemicals.

a)    What must be taken into account for the dosing of the chemicals?

b)    Calculate the solubility in the bioassay media for the AREc32 and the PPARγ bioassay using the given equations.

c)    Calculate the concentration (Cnom) that must be dosed to reach baseline toxicity.

d)    Are there any possibilities of what you can do if baseline toxicity cannot be achieved with the maximum soluble concentration?

9E1Exercise Dosing.xlsx