1. Introduction
Due to the reaction of chlorine with natural organic
materials in water, chlorination of drinking water leads
to the formation of chlorinated organic by-products.
Trihalomethanes (THMs) constitute the major fraction
of volatile chlorination by-products (Rook, 1974), while
haloacetic acids (HAAs) represent a major class of nonvolatile
chlorination by-products (Christman et al.,
1983; Miller and Uden, 1983). Under conventional