To monitor the ecotoxicity of contaminated sites several environmental elements are tested using test organisms from various trophic levels. Sinapis alba, namely the white mustard is suitable for plant test. The test procedure is described in the ENFO database at the following locations:
Water: https://www.enfo.hu/en/node/13295 (liquid sample)
Soil: https://www.enfo.hu/en/node/175
Waste: https://www.enfo.hu/en/gallery/12410 (or other solid material)
Source
Feigl, V. White mustard (Sinapis alba) root and shoot growth inhibition test for monitoring of contaminated sites (in Hungarian) https://www.enfo.hu/keptar/3714