Table 2. Dissolution of Metallic Bismuth in the Absence and Presence of 100 mg L^–1 FA^a.

	initial conditions			after 2 yrs of storage
sample	Bi(0) added (mg)	TOC (mg/L)	pH	Bi (μM)	TOC (mg/L)	pH	Bi(0) dissolved (%)	mmol Bi/g C
H2O	47	nd	5.6	0.0	ndc	8.64	<0.01
H2O	46	nd	5.6	1.1	ndc	8.34	0.01
FA	44	52.3b	5.49	665	44.3	7.27	6.3	15.0
FA	53	52.3b	5.49	789	43.9	7.23	6.2	18.0

^aThe carboxylate group density of the FA was 11.16 mequiv. (g C)⁻¹.²⁴

^bBased on the carbon content given by IHSS.²⁴

^cNot determined.