Hydrocarbon Monitoring as of June 24, 2009

This page last reviewed July 21, 2010


Parameter Measured Non-Methane Hydrocarbon
Compound (NMHC)
Continuous
Non-Methane
Hydrocarbons
Carbonyl Compounds
Total NMHC Speciated NMHC
(69 species, C2
through C12)
Acetone
Formaldehyde
Acetaldehyde
Sampling Schedule Every 3 days, July through September plus episodes
(3-hr samples)
Continuous
Hourly Average
3-hr sampler
ARB Collection Method XonTech 910A or 910PC Gaseous Sampler
with XonTech 912 Multisampler
Thermal
Environmental
(TECO) 55C
Hydrocarbon
Analyzer
Xontech 925 or
Other Carbonyl Samplers
Sampling Media Polished Stainless
Steel Canister
Not Applicable DNPH-Coated Silica
Gel Cartridges
ARB Sites None 2 17
Additional Sites Analyzed
by other Agencies
5 SCAQMD
4 San Diego County APCD
4 San Joaquin Valley APCD
3 Ventura County APCD
11 3 SCAQMD
2 San Diego County APCD
2 San Joaquin Valley APCD
1 Ventura County APCD
ARB Analysis Method Method 024
Cryofocusing
Direct GC/FID
Method 032
Cryfocusing GC/FID
Flame
Ionization
Detector
Method 022
High-Performance
Liquid
Chromatography /
Ultraviolet Detector
Data Availability ARB Planning and Technical Support Division, Aerometric
Data Analysis and Management System (ADAM)
;
U.S. EPA Air Quality System (AQS)
preload