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Performing the Assessment Transient and Permanent Effects

Molecules with toxic activity can be reasonably expected at four different stages  [Pg.81]

Just when the polymer is introduced into the soil, because of the migration of toxic low molecular weight additives present in the polymer. The additives can cause a temporary or permanent toxic effect, according to their chemical stability. [Pg.81]

After ageing. During use the polymer is exposed to environmental factors such as sunlight which can degrade the polymer into low molecular weight eco-toxic intermediates. [Pg.81]

After the biodegradation of the polymer, permanent toxic residues and intermediates can accumulate in soil. [Pg.81]


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