Abstract

Solutions of phthalic anhydride (which occurs in the waste waters of the local organic chemical industry and subsequently enters the river Rizana and the Bay of Koper - Gulf of Trieste, Northern Adriatic) in distilled, riverine and artificial and natural sea water were photolyzed using photochemical reactors and exposure to sunlight. The photochemical transformation of phthalic anhydride proceeds through decarboxylation and successively polymerizes to polyphenil. The average molecular weights were distributed mostly in the range between 2800 – 3600. Kinetic studies showed different rates in different aqueous media: distilled riverine ∼ ∼ artificial sea water natural sea water.

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