Sample

Component

The rate of Fe³⁺ to Bi³⁺

FS

Fe₃S₄

1:0

FBS1

Fe₃S₄/Bi₂S₃

9:2

FBS2

Fe₃S₄/Bi₂S₃

3:2

FBS3

Fe₃S₄/Bi₂S₃

1:2

BS

Bi₂S₃

0:1