Sulfur isotope fractionation bydesulfovibrio vulgarisduring metabolism of BaSO4

Abstract
D. vulgaris was capable of utilizing a BaSO4 precipitate as a sulfate source. The .delta.34S values of the evolved sulfide ranged from -4.8.permill. to 6.2.permill. with respect to the BaSO4, and appeared to depend upon the amount of dissolved sulfate (> 10-5M) present at any given time.