2.2. Toxicity tests
The bentazon and carbofuran toxicity tests were carried out based on the
concentrations of the active ingredients of each commercial formulation,
preparing stock solutions of 1 g L1
. For bentazon the product Basagran 600 was
used in the tests and for carbofuran the product Furadan 100G was used. For
each test organism the test solutions were prepared based on a literature search
or on preliminary tests.
The toxicological tests were carried out using five test organisms: the
phytoplankton species Pseudokirchneriella subcaptata, Scenedesmus
subspicatus and Skeletonema costatum, the sea urchin Lytechinus variegatus
and the marine microcrustacean Mysidopsis juniae. These species were selected
for their standardization in test