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درباره این کتاب:
-The role of
the European Community in developing
environmental legislation has focused the
minds of pollution control agencies and
industrialists on the need for, and the
evidence to support, water quality
standards. This is particularly so for the
Dangerous Substances Directive which has
led to European standards for cadmium,
mercury and lindane. Additionally the
United Kingdom has published standards for
six other non-ferrous metals. In this book
I have sought to review the aquatic
toxicity information for these and other
metals, not just by the collation of the
results of all the published toxicity
tests, but by the critical consideration
of the test techniques. A surprising
proportion of the reported toxicity
studies for aquatic organisms are based on
unsatisfactory chemical or biological
methods. That such weaknesses persist at a
time of limited resources for
environmental research is disappointing,
especially when sound metho dologies are
extensively documented and widely
published. Evaluation of the critically
reviewed and vetted data indicates that
many of the previously accepted
generalisations about the toxicity of
metals to aquatic life are invalid: for
instance the assumption that salmonid
species of fish are more susceptible to
these metals than coarse fish, or that
increased water hardness decreases
toxicity. Too few studies have actually
sought to test such hypotheses.
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