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...Copyright united nations all rights reserved part environmental hazards chapter hazardous to the aquatic environment definitions and general considerations acute toxicity means intrinsic property of a substance be injurious an organism in short term exposure that availability extent which this becomes soluble or disaggregate species for metal ion portion m compound can from rest molecule bioavailability biological is taken up by distributed area within it dependent upon physico chemical properties anatomy physiology pharmacokinetics route not prerequisite bioaccumulation net result uptake transformation elimination due routes i e air water sediment soil food bioconcentration waterborne chronic cause adverse effects organisms during exposures are determined relation life cycle complex mixtures multi component substances comprising mix individual with different solubilities most cases they characterized as homologous series certain range carbon chain length number degree substitution deg...