Central California Ozone Study (CCOS) - Desert Research Institute
Central California Ozone Study (CCOS) - Desert Research Institute
Central California Ozone Study (CCOS) - Desert Research Institute
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<strong>CCOS</strong> Field Operations Plan (DRAFT) Version 2: 5/31/00<br />
Table 2.4-4<br />
Primary, calibration, performance test and performance audit standards and frequencies for <strong>CCOS</strong> measurements<br />
Observable<br />
Expected<br />
Precision<br />
Primary Standard<br />
O3 by ultraviolet absorption ±10% Dasibi 1008PC UV<br />
photometer,<br />
referenced to ARB<br />
primary<br />
NO/NOY by<br />
chemiluminescence<br />
NOY/NOY* by<br />
chemiluminescence<br />
NO/NOX by<br />
chemiluminescence<br />
CO by infrared gas filter<br />
correlation<br />
Calibration<br />
Standard<br />
Dasibi 1003PC UV<br />
photometer<br />
±10% NIST-traceable NO Certified NO w/<br />
dynamic dilution and<br />
gas-phase titration<br />
±10% NIST-traceable NO Certified NO w/<br />
dynamic dilution and<br />
gas-phase titration<br />
±10% NIST-traceable NO Certified NO w/<br />
dynamic dilution and<br />
gas-phase titration<br />
±10% NIST-traceable CO Certified CO w/<br />
dynamic dilution<br />
Calibration<br />
Frequency<br />
At start and end of<br />
study<br />
At start and end of<br />
study<br />
At start and end of<br />
study<br />
At start and end of<br />
study<br />
At start and end of<br />
study<br />
Performance Test Standard<br />
Span and precision check with calibrated<br />
ozone generator and zero with scrubbed<br />
air<br />
Span and precision check with certified<br />
NO, converter check with NO2 by gas<br />
phase titration, and zero with scrubbed air<br />
Span and precision check with certified<br />
NO, converter check with NO2 by gas<br />
phase titration, and zero with scrubbed air<br />
Span and precision check with certified<br />
NO, converter check with NO2 by gas<br />
phase titration, and zero with scrubbed air<br />
Span and precision check with certified<br />
CO and zero with scrubbed air<br />
Performance<br />
Test<br />
Frequency<br />
Daily<br />
Performance Audit<br />
Standard<br />
Dasibi 1008PC with<br />
temperature and<br />
pressure adjustments<br />
Daily Certified NO w/<br />
dynamic dilution and<br />
NO2 by gas-phase<br />
titration<br />
Daily Certified NO w/<br />
dynamic dilution and<br />
NO2 by gas-phase<br />
titration<br />
Daily Certified NO w/<br />
dynamic dilution and<br />
NO2 by gas-phase<br />
titration<br />
Daily Certified CO w/<br />
dynamic dilution<br />
Performance<br />
Audit<br />
Frequency<br />
Once during<br />
study<br />
Once during<br />
study<br />
Once during<br />
study<br />
Once during<br />
study<br />
Once during<br />
study<br />
CO2 by infrared gas filter<br />
correlation<br />
±10% NIST-traceable CO2 Certified CO2 w/<br />
dynamic dilution<br />
At start and end of<br />
study<br />
Span check at two levels with certified<br />
CO2 and zero with scrubbed air<br />
Daily - -<br />
NO2, PAcN by<br />
chemiluminescence and<br />
luminol<br />
±20% NIST-traceable NO2<br />
and PAN<br />
HCHO by methanalyzer ±20% NIST-traceable<br />
HCHO<br />
PM2.5 nitrate by flash<br />
volatilization<br />
Light scattering by<br />
nephelometers<br />
Light absorption by<br />
aethalometers<br />
Certified NO w/<br />
dynamic dilution and<br />
gas-phase titration<br />
Certified HCHO<br />
permeation tube<br />
±15% NIST-traceable NO Certified NO w/<br />
dynamic dilution and<br />
nitrate solution<br />
±10% HFC-134a refrigerant HFC-134a, pure<br />
CO2, and particle<br />
At start and end of<br />
study<br />
At start and end of<br />
study<br />
At start and end of<br />
study<br />
Span check with NO2 by gas phase<br />
titration and zero with scrubbed air<br />
Internal zero check, HCHO permeation<br />
tube<br />
Span with certified NO and zero with<br />
scrubbed air<br />
At start and end of<br />
study<br />
free air<br />
±5 to 20% Neutral density filters Factory calibration When out of spec Internal electronic checks and neutral<br />
density filters<br />
Daily for NO2 Certified NO2 w/<br />
dynamic dilution and<br />
gas-phase titration<br />
Zero: once/10<br />
minutes,<br />
HCHO at end<br />
of study<br />
Weekly Certified NO w/<br />
dynamic dilution and<br />
nitrate solution<br />
Once during<br />
study<br />
- -<br />
HFC-134a, and particle free air Weekly HFC-134a, pure<br />
CO2, and particle<br />
free air<br />
Weekly and<br />
monthly<br />
Neutral density filters<br />
Once during<br />
study<br />
Once during<br />
study<br />
Once during<br />
study<br />
Chapter 2: FIELD MEASUREMENTS 2-28
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