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navigatie, zoeken    Paracelsus (1493 - 1541)  Everything is
toxic...  The founder of toxicology, Paracelsus (1493 - 1541) is
most famous for his quote “All things are poison and nothing is
without poison, only the dose permits something not to be
poisonous”. With this, he indicated that in sufficiently large
doses all substances can be toxic. So, even water can be lethal
if it’s drunk in too large amounts. Salt can be poisonous as
well if one eats multiple table spoons of it at once. These
examples show that toxicity is relative, it doesn’t only depend
on the harmful characteristics of a substance, but also on the
level at which an organism was exposed to it. At present there
are about 100,000 chemicals known which might cause harm to
humans or the environment.   Lab analysis of chemicals
Ecotoxicology is the study of the harmful effects that chemical
substances can have on living organisms an