Investigation on the Levels of ?-radiation Emitted From Ceramic Floor  Boards  Saled in Tangshan
	    		
		   		
	    	
    	
    	
   		
        
        	
        		- VernacularTitle:唐山市售陶瓷地砖?射线水平调查
 
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Yingli LIU
			        		
			        		;
		        		
		        		
		        		
			        		Xiulan BIAN
			        		
			        		;
		        		
		        		
		        		
			        		Zhimin WU
			        		
			        		
		        		
		        		
		        		
		        		
		        		
			        		
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Journal Article
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Construction materials;
			        		
			        		
			        		
				        		Radioactivity;
			        		
			        		
			        		
				        		Ceramic floo r boards
			        		
			        		
	        			
        			
        		
 
        	
            
            
            	- From:
	            		
	            			Journal of Environment and Health
	            		
	            		 1989;0(06):-
	            	
            	
 
            
            
            	- CountryChina
 
            
            
            	- Language:Chinese
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	Objective To explore the levels of?-radiation emitted from ceramic floor boards saled in Tangshan.Methods  The levels of?-radiation emitted from common ceramic floor boards,polished surface-ceramic floor board s and granular surfac-ceramic floor boards manufactured in A,B and C different  provinces were determined.All sam ple s were collected from the build ing ma te rial markets in Tangshan.Results The levels of?-radiation emitted from ceram-ic floor boards were91.1,76.8,75.1nGy /h for those manufactured in A,B and C province respectively,and92.7,88.9,78.0nGy /h for granular sur face-ceramic floor boards,polished surface-ceramic floor boards and com mon ceramic floor boards respec tively.Con clu sion For the consumers,the first selection of the common ceramic floor boards to dec-orate the floor was recommended.