Description
Label an isotope ratio's numerator, denominator and source.
Geochemical results depend on analyte, matrix, dry/anhydrous basis, reference composition, isotope-ratio direction and censoring conventions. A normalized ratio or local correction is distinct from a validated mineral formula or geological interpretation. Operational extraction fractions and nominal site occupancies need their original analytical context.
Label an isotope ratio's numerator, denominator and source.
When to use this tool
Use Isotope Ratio Denominator Label when checking the stated geochemical reporting basis, local correction or reference convention.
How to use the tool and how it works
- Enter numeratorIsotope, denominatorIsotope, referenceSource. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read label. Use the output convention below.
Require nonempty numerator-isotope, denominator-isotope and reference-source labels. Format numerator/denominator [source].1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| numeratorIsotope | Numerator Isotope | Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192. |
| denominatorIsotope | Denominator Isotope | Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192. |
| referenceSource | Reference Source | Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| label | Formatted supplied record wording; no independent validation of its substantive meaning. | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"numeratorIsotope": "87Sr",
"denominatorIsotope": "86Sr",
"referenceSource": "Lab standard A"
},
"output": {
"label": "87Sr/86Sr [Lab standard A]"
}
}Limitations and assumptions
- No isotope identity, abundance, ratio or reference material is validated.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Use verified analytical methods, reference materials and appropriate complete geochemical models with qualified laboratory interpretation for actual results and safe handling.
References
Similar or alternative tools
- Water Rock Mass Ratio Label
Label the mass-ratio convention of a water-rock record.
- Geochemical Replicate Censored Pair Code
Record the stated censoring convention of a geochemical replicate pair.