0.020 



Q) 



0.016 



FURNELL WPA - WET22 



Total recoverable concentration in water 

 Detection limit 



0) 

 Q. 



(/) 



E 



OJ 



0.012 



r</) 



I 



c 



o 



.O 



0.008 



0.004 



0.000 



As 



Pb 



B 



Ni 



Cd 



Se Cr 



Zn 



Cu 



