الفهرس 
Aim of the workOnly 14 pages are availabe for public view
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Abstract
Phenolic comounds are considered among the most dangerous polutants list. The presence of phenol and phenolic compounds in industrial waste effluents by the production of phenol formaldehyde based resins has become an increasingly dangerous source of stream pollution due to the direct contamination of such wastes into our water ways. According to governmental laws for environmental protection, phenol concentration in effluents should not exceed 0.1 mg/L. It has, therefore become more important to develop processes that can overcome this problem. In the present study a suitable method for the quantitative determination of phenol in water was required. In this context comparison between the 4aminoantipyrene and 4nitroaniline spectrophotometeric methods show that 4nitroaniline can be advantageously applied as a colour reagent. In this case the relation between concentration and absorbance was found to be linear up to 1000 mg/L (Fig. 2.1), which enable measurement of phenol concentrations, before and after treatment processes, in a relatively wide range.