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8
CH3041
ORGANIC COMPLEXES
• The various
organic compounds present in water may
participate in monodentate or polydentate binding to trace metals.
• Chelation is to be expected as all of the HA and FA will have multiple functional groups eg. COOH, -OH, PhOH.
• In natural waters the pH will result in up
to 100% of the –COOH groups on these FA and HA being deprotonated. pH 5.5 - 9
to 100% of the –COOH groups on these FA and HA being deprotonated. pH 5.5 - 9
• HA can also bond
with pesticides such as DDT in the
water column in a hydrophobic
interaction due to hydrocarbon-hydrocarbon affinities – “like-dissolves-like”.
interaction due to hydrocarbon-hydrocarbon affinities – “like-dissolves-like”.
