N-CHLOROALDIMINES .3. CHLORINATION OF PHENYLALANINE IN MODEL SOLUTIONS AND IN A WASTE-WATER

被引:66
作者
CONYERS, B [1 ]
SCULLY, FE [1 ]
机构
[1] OLD DOMINION UNIV,DEPT CHEM & BIOCHEM,NORFOLK,VA 23529
关键词
D O I
10.1021/es00039a003
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The chlorination reactions of phenylalanine in water and wastewater were studied. At the lower CI/N molar ratios N-chlorophenylalanine and phenylacetaldehyde were identified as the main products while phenylacetonitrile and N-chlorophenylacetaldimine were the major products at Cl/N ratios of 2.0 and beyond. The concentration of phenylalanine in a primary municipal wastewater effluent was determined, and the chlorination products were found to be the same as those in model solutions. N-Chlorophenylacetaldimine decomposes slowly (t1/2 = 35 h) in water (pH 7.0 and 8.0) and in wastewater (pH 7.0, estimated t1/2 of 58 h). The distribution of chlorination products in the wastewater supports the theory that monochlorinated organic amino nitrogen compounds may represent a disproportionately high fraction of the chlorine-containing oxidants present in marginally chlorinated primary effluent.
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页码:261 / 266
页数:6
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