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Table 2 Sulfur contents and sulfur isotope compositions of samples before and after pretreatments analyzed by elemental analyzer and isotope ratio mass spectrometry (EA/IRMS)

From: Sulfur reduction distillation of sulfides and verification of the effect of sulfur isotopic fractionation during pretreatment

Samples

Material

Chemical formula

S (wt.%)

δ34S (‰)

SE (± σ)

Reactant

S1

Pyrite-galena mixture

FeS2, PbS

46.4

6.98

0.01

S2

6.77

0.07

Product

A-1

Barite

BaSO4

10.5

6.60

0.08

A-2

Barite

BaSO4

11.4

5.65

0.06

A-3

Barite

BaSO4

11.1

5.53

0.01

A-4

Barite

BaSO4

10.9

6.36

0.05

A-5

Barite

BaSO4

10.8

6.35

0.03

A-6

Barite

BaSO4

11.0

5.51

0.16

A-7

Barite

BaSO4

11.1

5.92

0.15

A-8

Barite

BaSO4

10.1

5.39

0.03

A-9

Barite

BaSO4

10.9

5.56

0.08

A-10

Barite

BaSO4

10.8

6.10

0.11

A-11

Barite

BaSO4

11.0

5.79

0.13