Description
Convert wet-air species mole fraction to dry-air basis.
Atmospheric analytical quantities require explicit sample/background, mole, charge, reference-pressure and reporting bases. A ratio or balance can be consistent numerically without establishing actual composition, sample representativeness, source identity or a health/regulatory interpretation.
Convert wet-air species mole fraction to dry-air basis.
When to use this tool
Use Dry Air Mole Fraction Factor when checking the stated atmospheric chemical measurement, composition or amount convention.
How to use the tool and how it works
- Enter wetMoleFraction, waterMoleFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read dryMoleFraction. Use the output convention below.
Convert wet-air species mole fraction to dry-air basis. Require water fraction in [0,1) and wet species fraction within [0,1-water]; dryMoleFraction = wet/(1-water).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| wetMoleFraction | Wet Mole Fraction | Required. Finite number; minimum 0. |
| waterMoleFraction | Water Mole Fraction | Required. Finite number; minimum 0; strictly below 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| dryMoleFraction | Dry Mole Fraction | Required. Finite number. |
{
"input": {
"wetMoleFraction": 0.08,
"waterMoleFraction": 0.2
},
"output": {
"dryMoleFraction": 0.09999999999999999
}
}Limitations and assumptions
- This excludes water from the denominator under a compatible ideal mixture convention; no humidity observation or species identity 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 calibrated analytical data, compatible units and complete sampling/speciation information; consult appropriate environmental professionals for exposure or regulatory decisions.
References
Similar or alternative tools
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