8Tan L, Sudak R G. Removing color from a ground water application [ J]. J Amer Works Assn,1992, (84) :79 - 84.
9Nam S.Tratnyek P G. Reduction of azodyes with zero —valent i-ron[J]. Water Research,2000,34(6) ; 1837.1845.
10Matheson L J, Tratnyek P G. Reductive dehalogenation of chlori-nated methanes by iron metal [J]. Environmental Science andTechnology * 1994,28(12) :2045 .2053.