RE: CS-137 in the Black Sea Salt.

[Toro Laszlo <toro@ispt.ro>]

Radsafers,



For your information here you have the Cs-137 and K-40 

concentrations in the Black Sea water at the Constanta Monitoring 

  Station. The following values are quite aproxiamte, I have 

teken them from a graph (if somebody is interested I xcan scan it 

and send as a graphic file).

The source is the 1998 and 1999 report of National Committee on 

the Control of Nuclear Activities, Directorate of Survellance of 

the Radioactivity of the Environment.



		1998			       1999

  	Cs-137 

	K-40 	  Cs-137	K-40

	(Bq/m^3)       (Bq/m^3)	 (Bq/m^3)      (Bq/m^3)

ian 

26 

	5000	    20		3500

feb 

18 

	5300	    11		3700 



mar 

22 

	4400	    27		3800

apr 

20.5 

	3100	    27		5000

may 

19 

	4500	    32          5500

jun 

18 

	4100	    6           3000

jul 

18 

	3800	    8           3300

aug 

15 

	3850	    14          4000

sep 

29 

	3900	    13          3800

oct 

6 

	3100	    13          4100

nov 

9.5 

	4000	    15          3800

dec 

16.5 

	3200        22          3800



These values are obtained from gamma spectrometrical measurements 

of a cumulative sample resulted from the residuum (after 

evaporation) of daily water samples



Radioactivity of the Danube river (for comparison)



		1998			       1999

  	    Cs-137	K-40 		  Cs-137	K-40

	    (Bq/m^3)    (Bq/m^3)	 (Bq/m^3)      (Bq/m^3)

Turnu Severin	0.55	  38		    1.4		 90

Bechet 

         0.5	  5		    1.8		 35	

Turnu Magurele   no data		    1.4		 75

Giurgiu  	0.85	  60		    0.65	 38

Cernavoda 

nd 

   45	            0.95         55

Galati    	     nd                      1.1         80

Tulcea 

	nd	  66 

             0.7          95



1 year cumulative samples



The Commission was reorganized this year, I do not know if this 

Directorate still exists.

  For further information you should contact the former director, 

Florin Baciu , fbaciu@router.cncan.ro. If trhis address do not 

work, please let me know, I will find the right one.



Yours

Laszlo







Laszlo Toro

Radiation Hygiene Dept.

Institute of Public Health

RO 1900 Timisoara

16-18 V. Babes av.

Romania

T, F: +40 56 192101



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