Example:
xTHCuncor = 150.3 [MICRO]mol/mol
xTHCinit = 1.1 [MICRO]mol/mol
xTHCcor = 150.3-1.1
xTHCcor = 149.2 [MICRO]mol/mol
Where:
xNMHC = concentration of NMHC.
xTHC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID during sampling while bypassing the NMC.
xTHC[NMC-FID]cor = concentration of THC, initial THC contamination (optional) and dry-to-wet corrected, as measured by the NMC FID during sampling through the NMC.
RFCH4[THC-FID] = response factor of THC FID to CH4, according to § 1065.360(d) .
RFPFC2H6[NMC-FID] = nonmethane cutter combined ethane response factor and penetration fraction, according to § 1065.365(d) .
Example:
xTHC[THC-FID]cor = 150.3 [MICRO]mol/mol
xTHC[NMC-FID]cor = 20.5 [MICRO]mol/mol
RFPFC2H6[NMC-FID] = 0.019
RFCH4[THC-FID] = 1.05
xNMHC = 131.4 [MICRO]mol/mol
Where:
xNMHC = concentration of NMHC.
xTHC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID during sampling while bypassing the NMC.
PFCH4[NMC-FID] = nonmethane cutter CH4 penetration fraction, according to § 1065.365(e) .
xTHC[NMC-FID]cor = concentration of THC, initial THC contamination (optional) and dry-to-wet corrected, as measured by the THC FID during sampling through the NMC.
PFC2H6[NMC-FID] = nonmethane cutter ethane penetration fraction, according to § 1065.365(e) .
Example:
xTHC[THC-FID]cor = 150.3 [MICRO]mol/mol
PFCH4[NMC-FID] = 0.990
xTHC[NMC-FID]cor = 20.5 [MICRO]mol/mol
PFC2H6[NMC-FID] = 0.020
xNMHC = 132.3 [MICRO]mol/mol
Where:
xNMHC = concentration of NMHC.
xTHC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID during sampling while bypassing the NMC.
PFCH4[NMC-FID] = nonmethane cutter CH4 penetration fraction, according to § 1065.365(f) .
xTHC[NMC-FID]cor = concentration of THC, initial THC contamination (optional) and dry-to-wet corrected, as measured by the THC FID during sampling through the NMC.
RFPFC2H6[NMC-FID] = nonmethane cutter CH4 combined ethane response factor and penetration fraction, according to § 1065.365(f) .
RFCH4[THC-FID] = response factor of THC FID to CH4, according to § 1065.360(d) .
Example:
xTHC[THC-FID]cor = 150.3 [MICRO]mol/mol
PFCH4[NMC-FID] = 0.990
xTHC[NMC-FID]cor = 20.5 [MICRO]mol/mol
RFPFC2H6[NMC-FID] = 0.019
RFCH4[THC-FID] = 0.980
xNMHC = 132.5 [MICRO]mol/mol
Where:
xNMHC = concentration of NMHC.
xTHC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID.
RFCH4[THC-FID] = response factor of THC-FID to CH4.
xCH4 = concentration of CH4, dry-to-wet corrected, as measured by the GC-FID or FTIR.
Example:
xTHC[THC-FID]cor = 145.6 [MICRO]mol/mol
RFCH4[THC-FID] = 0.970
xCH4 = 18.9 [MICRO]mol/mol
xNMHC = 145.6-0.970 · 18.9
xNMHC = 127.3 [MICRO]mol/mol
Where:
[XI]NMHC = concentration of NMHC.
[XI]HCi = the C1-equivalent concentration of hydrocarbon species i as measured by the FTIR, not corrected for initial contamination.
[XI]HCi-init = the C1-equivalent concentration of the initial system contamination (optional) of hydrocarbon species i, dry-to-wet corrected, as measured by the FTIR.
Example:
[XI]C2H6 = 4.9 [MICRO]mol/mol
[XI]C2H4 = 0.9 [MICRO]mol/mol
[XI]C2H2 = 0.8 [MICRO]mol/mol
[XI]C3H8 = 0.4 [MICRO]mol/mol
[XI]C3H6 = 0.5 [MICRO]mol/mol
[XI]C4H10 = 0.3 [MICRO]mol/mol
[XI]CH2O = 0.8 [MICRO]mol/mol
[XI]C2H4O = 0.3 [MICRO]mol/mol
[XI]CH2O2 = 0.1 [MICRO]mol/mol
[XI]CH4O = 0.1 [MICRO]mol/mol
[XI]NMHC = 4.9 + 0.9 + 0.8 + 0.4 + 0.5 + 0.3 + 0.8 + 0.3 + 0.1 + 0.1
[XI]NMHC = 9.1 [MICRO]mol/mol
Where:
[XI]NMNEHC = concentration of NMNEHC.
[XI]THC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID.
RFCH4[THC-FID] = response factor of THC-FID to CH4.
[XI]CH4 = concentration of CH4, dry-to-wet corrected, as measured by the GC-FID, NMC FID, or FTIR.
RFC2H6[THC-FID] = response factor of THC-FID to C2H6.
[XI]C2H6 = the C1-equivalent concentration of C2H6, dry-to-wet corrected, as measured by the GC-FID or FTIR.
Example:
[XI]THC[THC-FID]cor = 145.6 [MICRO]mol/mol
RFCH4[THC-FID] = 0.970
[XI]CH4 = 18.9 [MICRO]mol/mol
RFC2H6[THC-FID] = 1.02
[XI]C2H6 = 10.6 [MICRO]mol/mol
[XI]NMNEHC = 145.6-0.970 · 18.9-1.02 · 10.6
[XI]NMNEHC = 116.5 [MICRO]mol/mol
Where:
xNMNEHC = concentration of NMNEHC.
xHCi = the C1-equivalent concentration of hydrocarbon species i as measured by the FTIR, not corrected for initial contamination.
xHCi-init = the C1-equivalent concentration of the initial system contamination (optional) of hydrocarbon species i, dry-to-wet corrected, as measured by the FTIR.
Example:
xC2H4 = 0.9 [MICRO]mol/mol
xC2H2 = 0.8 [MICRO]mol/mol
xC3H8 = 0.4 [MICRO]mol/mol
xC3H6 = 0.5 [MICRO]mol/mol
xC4H10 = 0.3 [MICRO]mol/mol
xCH2O = 0.8 [MICRO]mol/mol
xC2H4O = 0.3 [MICRO]mol/mol
xC2H2O2 = 0.1 [MICRO]mol/mol
xCH4O = 0.1 [MICRO]mol/mol
xNMNEHC = 0.9 + 0.8 + 0.4 + 0.5 + 0.3 + 0.8 + 0.3 + 0.1 + 0.1
xNMNEHC = 4.2 [MICRO]mol/mol
Where:
xCH4 = concentration of CH4.
xTHC[NMC-FID]cor = concentration of THC, initial THC contamination (optional) and dry-to-wet corrected, as measured by the NMC FID during sampling through the NMC.
xTHC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID during sampling while bypassing the NMC.
RFPFC2H6[NMC-FID] = the combined ethane response factor and penetration fraction of the nonmethane cutter, according to § 1065.365(d) .
RFCH4[THC-FID] = response factor of THC FID to CH4, according to § 1065.360(d) .
Example:
xTHC[NMC-FID]cor = 10.4 [MICRO]mol/mol
xTHC[THC-FID]cor = 150.3 [MICRO]mol/mol
RFPFC2H6[NMC-FID] = 0.019
RFCH4[THC-FID] = 1.05
xCH4 = 7.69 [MICRO]mol/mol
Where:
xCH4 = concentration of CH4.
xTHC[NMC-FID]cor = concentration of THC, initial THC contamination (optional) and dry-to-wet corrected, as measured by the NMC FID during sampling through the NMC.
xTHC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID during sampling while bypassing the NMC.
PFC2H6[NMC-FID] = nonmethane cutter ethane penetration fraction, according to § 1065.365(e) .
RFCH4[THC-FID] = response factor of THC FID to CH4, according to § 1065.360(d) .
PFCH4[NMC-FID] = nonmethane cutter CH4 penetration fraction, according to § 1065.365(e) .
Example:
xTHC[NMC-FID]cor = 10.4 [MICRO]mol/mol
xTHC[THC-FID]cor = 150.3 [MICRO]mol/mol
PFC2H6[NMC-FID] = 0.020
RFCH4[THC-FID] = 1.05
PFCH4[NMC-FID] = 0.990
xCH4 = 7.25 [MICRO]mol/mol
Where:
xCH4 = concentration of CH4.
xTHC[NMC-FID]cor = concentration of THC, initial THC contamination (optional) and dry-to-wet corrected, as measured by the NMC FID during sampling through the NMC.
xTHC[THC-FID]cor = concentration of THC, initial THC contamination and dry-to-wet corrected, as measured by the THC FID during sampling while bypassing the NMC.
RFPFC2H6[NMC-FID] = the combined ethane response factor and penetration fraction of the nonmethane cutter, according to § 1065.365(f) .
PFCH4[NMC-FID] = nonmethane cutter CH4 penetration fraction, according to § 1065.365(f) .
RFCH4[THC-FID] = response factor of THC FID to CH4, according to § 1065.360(d) .
Example:
xTHC[NMC-FID]cor = 10.4 [MICRO]mol/mol
xTHC[THC-FID]cor = 150.3 [MICRO]mol/mol
RFPFC2H6[NMC-FID] = 0.019
PFCH4[NMC-FID] = 0.990
RFCH4[THC-FID] = 1.05
xCH4 = 7.78 [MICRO]mol/mol
40 C.F.R. §1065.660