Stable Isotopes -
Sulphur – 34S/32S
Abundance –
32S = 95.00 % atom
33S = 0.76 % atom
34S = 4.22 % atom
36S = 0.014 % atom
Gas analysed -
SO2
Recommended Scale -
VCDT (Canon Diablo Troilite, absolute isotope ratio (44360±40)x10-6 [MacNamara & Thode, 1950])
Equipment -
Micromass 1202 dual inlet
| Precision‰ | Preferred | Minimum | Price | |||||
| samples | sample | |||||||
| size | size | |||||||
| SOLIDS | ||||||||
| 34S | Ag2S | 0.1 | 50mg | 15mg | ||||
| 34S | sulfide minerals | 0.1 | 5mg S | 2mg S | ||||
| 34S | elemental sulphur | 0.1 | 5mg S | 2mg S | ||||
| 34S | sulfate minerals | 0.3 | 50mg | 15mg | ||||
| 34S & 18O | sulfate minerals | 0.2 & 0.3 | 50mg as BaSO4 | 15mg as BaSO4 | ||||
| 34S | organic | 0.3 | 5mg S | 2mg S | ||||
| LIQUIDS | ||||||||
| 34S | sulfate solution | 0.2 ml | 20 mg as SO4 | 15mg as BaSO4 | ||||
| 34S & 18O | sulfate solution | 0.2 & 0.3 | 50mg as BaSO4 | 15mg as BaSO4 | ||||
| GAS | ||||||||
| 34S | H2S | |||||||