Table I.

GSH, PCs and their arsenic complexes, molecular masses, and retention time

Chemical Species	Formula	m/z	Retention Times
			min
PC2	C18H29N5O10S2	540	13.0
PC2 oxidized	C36H54N10O20S4	1,075/538	13.8
PC3	C26H41N7O14S3	772/386.6	22.1
PC3 oxidized (1 S-S bridge)	C52H80N14O28S6	1,541/771	Co-eluting with PC3 reduced ?
GSH	C10H17N3O6S	308	5.2
GSSG	C20H32N6O12S2	613	9.6
(PC2)-(GS)	C28H44N8O16S3	845/423	16.9
As(III)-(PC2)2	C36H55N10O20S4As	1,151/576	29.5
GS-As(III)-PC2	C28H43N8O16S3As	919/460	22.8
As(III)-PC3	C26H38N7O14S3As	844/422.5	24.2
As(III)-(GS)3	C30H48N9O18S3As	994/497.5	16.8
PC3-GS	C36H56N10O20S4	1,077/539	Co-eluting with PC2 oxidized ?
As(III)-PC2	C18H27N5O10S2AsOH	630	20.1
GS-As(III)-PC3	C36H55N10O20S4As	1,151/576	Co-eluting with As(III)-(PC2)2?