Organics in water
See answer on the dicholoroanaline and chlorobenzene
Check this link, as they have explained it better
https://www.google.com.my/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&ved=0CDwQFjAC&url=http%3A%2F%2Fwww.trincoll.edu%2F~henderso%2Ftextfi~1%2F416%2520notes%2F8270c.pdf&ei=O-ApUciPAczqrQeO34CQBQ&usg=AFQjCNEbiF-pLa8C_KEY4hTdLTNOnF_7xA&sig2=6A_EY8XUKA_J9bFUnUGGfQ&bvm=bv.42768644,d.bmk
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