Keyword sulphides
		
				 
		
		
	
			ORIGINAL RESEARCH
		
		 
	
	
	
		Oxidation of Sulphides in Tannery Wastewater by Use of Manganese (IV) Oxide 
	
	
		V. Valeika, K. Beleska, V. Valeikiene
		
			
			Pol. J. Environ. Stud. 2006;15(4):623-629
		
		
			
	
	 
	
		
		
 
		
		
	
			REVIEW PAPER
		
		 
	
	
	
		Environmental Factors Affecting the Speciation of Mercury in the Bottom Sediments; an Overview
	
	
		L. Boszke*, 1. A. Kowalski, G. Gosiska, R. Szarek,  1. J. Siepak
		
			
			Pol. J. Environ. Stud. 2003;12(1):5-13