Description
Subtract a trace-element blank mass from sample mass.
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.
Subtract a trace-element blank mass from sample mass.
When to use this tool
Use Blank Corrected Trace Element Mass when checking the stated geochemical reporting basis, local correction or reference convention.
How to use the tool and how it works
- Enter blankMass, sampleMass. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedGap. Use the output convention below.
Return sampleMass-blankMass as a signed gap on a common mass basis.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| blankMass | Blank Mass | Required. Finite number. |
| sampleMass | Sample Mass | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedGap | Sample mass minus blank mass; signed inputs and negative results are accepted. | Required. Finite number. |
{
"input": {
"blankMass": 12,
"sampleMass": 17
},
"output": {
"signedGap": 5
}
}Limitations and assumptions
- Both inputs are unrestricted signed values; no blank quality, detection limit, nonnegative concentration or analytical validity is inferred.
- 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.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
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
- Geochemical Single Element Closure Residual
Calculate the signed mass-closure residual for one element.
- Rock Powder Dilution Blank Correction Tool
Blank-corrected digest concentration converted to sample mass basis in caller-consistent units; negative blanks-corrected results are retained.