ABSTRACT

As seen in Table 3.1. Halogen contianing compounds are found extensively in the aqueous ecosystem

including rivers, lakes and surface waters. It is seen that up to 13.4µg L−1 total haloforms have been found in river waters

(up to 70.5µg l−1 in lakes) and up to 4.3µg l−1 polycyclic aromatic hydrocarbon in rivers. At these maximum levels there is a cause for ecological concern.