TABLE 1

Contents of the chemical forms SrCl2 and SrCO3 in the BCMs and abiotic Sr-CaCO3

Sample typeInitial Sr concn (10−3 mol liter−1)Cultivation time (days)Chemical species (%)
SrCl2SrCO3
BCM2.056535
BCM1.054852
BCM1.0101387
Sr-CaCO3 precipitate1.00 (no culture)5545