The more recent herbicide formulations are designed
to offer advantages of the highest selectivity
together with the lowest persistence in the
environment: sulfonylurea herbicides meet these requirements.
But, unfortunately, lower persistence in the
environment does not necessarily correspond to lower
toxicity, since many herbicides undergo natural degradation
reactions in the environment that do not lead to
mineralization but to the formation of new species
potentially more toxic and stable than the precursors
[1–5]. The evaluation of the degradation pathway and
the structures and toxicity of the degradation products
is therefore of paramount importanc