Description
Return constant-oxidant exposure and exponential retention.
Atmospheric reaction, partitioning and deposition terms depend on supplied rates, spectral coordinates, coefficient definitions and transport assumptions. One bin or first-order factor is distinct from a complete chemical mechanism, evolving plume or verified treatment/exposure outcome.
Return constant-oxidant exposure and exponential retention.
When to use this tool
Use Oxidation Exposure Concentration Time Product when evaluating the stated atmospheric reaction, photolysis, partitioning or transport term.
How to use the tool and how it works
- Enter oxidantConcentration, duration, reactionRateCoefficient. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read exposure, firstOrderExponent, retainedFraction. Use the output convention below.
Return constant-oxidant exposure and exponential retention. Require nonnegative oxidant concentration, duration and reaction coefficient; exposure = concentration*time, exponent = coefficient*exposure, retainedFraction = exp(-exponent).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| oxidantConcentration | Oxidant Concentration | Required. Finite number; minimum 0. |
| duration | Duration | Required. Finite number; minimum 0. |
| reactionRateCoefficient | Reaction Rate Coefficient | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| exposure | Exposure | Required. Finite number. |
| firstOrderExponent | First Order Exponent | Required. Finite number. |
| retainedFraction | Retained Fraction | Required. Finite number. |
{
"input": {
"oxidantConcentration": 2,
"duration": 3,
"reactionRateCoefficient": 0.5
},
"output": {
"exposure": 6,
"firstOrderExponent": 3,
"retainedFraction": 0.049787068367863944
}
}Limitations and assumptions
- The coefficient's units must make the exponent dimensionless; varying oxidant, sources, mixing and actual reaction completion are omitted.
- 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 coefficients and a complete suitable chemical/transport or spectral model, including changing conditions and omitted processes, for environmental conclusions.
References
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