The use of Larger Volumes in a Collimated Beam Setup

“Research into the conversion of organic micropollutants revealed that with medium pressure (MP) UV-lamps, an increase in genotoxic activity in one of two tested bacterial strains in the Ames II test may be obtained. To study the factors that affect formation of genotoxic by-products, volumes ≥ 500 mL are required. It is possible to use a collimated beam (CB) setup with water layers up to 10 cm deep. Both photolysis as well as oxidation constants of model compounds tested in a water matrix containing NOM stayed constant, independent of the depth of the water layer applied.”

(Citaat: Hofman-Caris, C.H.M., Harmsen, D.J.H., et al., – The use of Larger Volumes in a Collimated Beam Setup – Ozone Science and Engineering 34(2012)2, p.125-128)