[analyst]

I am trying to dissolve barium sulfate for analysis by ICP- unsuccessfully! I am using a 1:20  of sodium carbonate in a 1000C . Then I try to dissolve the cold melt in a 1:1 HCl . Unfortunately I find a white ppt , leading me to believe that somewhat barium sulfate is reprecipitating... an ideas?

[Mansouri]

first of all , you must dissolve barium sulfate in HCl conc. , after solving it you can do every think that you want.