Field comparison of passive air samplers with reference monitors for ambient volatile organic compounds and nitrogen dioxide under week-long integrals

Mukerjee, Shaibal; Oliver, Karen D.; Seila, Robert L.; Jacumin, Henry H.; Croghan, Carry; Daughtrey, E. Hunter; Neas, Lucas M.; Smith, Luther

doi:10.1039/b809588d

Cited by 30 publications

(25 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The precision of duplicate samples was <10%, with the exception of styrene, which had low concentrations. This is comparable to similar precision estimates found in earlier studies using the same passive sampler in Detroit (Mukerjee et al, 2009) and Dallas (Smith et al, 2011); similar precision was estimated for benzene in Corpus Christi (Thoma et al, 2011). Table 2 reports the outcome of pairwise tests and Hodges-Lehmann estimates of the differences.…”

Section: Methodssupporting

confidence: 71%

“…This yearlong study reported that these samplers were comparable to reference VOC methods (Thoma et al, 2011). Similar comparison results with these samplers have been found elsewhere (McClenny et al, 2006;Mukerjee et al, 2009;Smith et al, 2011). The Corpus Christi study also reported elevated benzene concentrations downwind of the refinery and demonstrated the effectiveness of using this sampler for fenceline monitoring.…”

Section: Introductionsupporting

confidence: 69%

“…General information on EPA's use of passive samplers, including deployment methods, validation comparisons, and laboratory analysis and analytical components, is described elsewhere (Eisele et al, 2016;McClenny et al, 2005McClenny et al, , 2006Mukerjee et al, 2009;Thoma et al, 2011Thoma et al, , 2015, with specific details of the Philadelphia passive sampler and sensor study in Thoma et al (2015). With the exception of deployment locations, sampling methods applied were similar to EPA Methods 325A and 325B (EPA, 2015a;2015b).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Spatial analysis of volatile organic compounds in South Philadelphia using passive samplers

Mukerjee

Smith

Thoma

et al. 2016

Journal of the Air & Waste Management Association

Self Cite

View full text Add to dashboard Cite

Select volatile organic compounds (VOCs) were measured in the vicinity of a petroleum refinery and related operations in South Philadelphia, Pennsylvania, USA, using passive air sampling and laboratory analysis methods. Two-week, time-integrated samplers were deployed at 17 sites, which were aggregated into five site groups of varying distances from the refinery. Benzene, toluene, ethylbenzene, and xylene isomers (BTEX) and styrene concentrations were higher near the refinery's fenceline than for groups at the refinery's south edge, mid-distance, and farther removed locations. The near fenceline group was significantly higher than the refinery's north edge group for benzene and toluene but not for ethylbenzene or xylene isomers; styrene was lower at the near fenceline group versus the north edge group. For BTEX and styrene, the magnitude of estimated differences generally increased when proceeding through groups ever farther away from the petroleum refining. Perchloroethylene results were not suggestive of an influence from refining. These results suggest that emissions from the refinery complex contribute to higher concentrations of BTEX species and styrene in the vicinity of the plant, with this influence declining as distance from the petroleum refining increases.Implications: Passive sampling methodology for VOCs as discussed here is employed in recently enacted U.S. Environmental Protection Agency Methods 325A/B for determination of benzene concentrations at refinery fenceline locations. Spatial gradients of VOC concentration near the refinery fenceline were discerned in an area containing traffic and other VOC-related sources. Though limited, these findings can be useful in application of the method at such facilities to ascertain source influence.PAPER HISTORY

show abstract

Section: Methodssupporting

confidence: 71%

Section: Introductionsupporting

confidence: 69%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Spatial analysis of volatile organic compounds in South Philadelphia using passive samplers

Mukerjee

Smith

Thoma

et al. 2016

Journal of the Air & Waste Management Association

Self Cite

View full text Add to dashboard Cite

show abstract

“…Passive samplers were reuseable PerkinElmer style tubes containing Carbopack X sorbent (Supelco FLM Carbopack X Deactivated Stainless Steel TD Tubes, 89 mm, part number 28686-U, Sigma-Aldrich Co. LLC, St. Louis, MO) deployed for 14-day sampling periods. The passive sampler has been evaluated in lab and field studies and is comparable to standard methods for VOCs (McClenny et al, 2005;2006;Mukerjee et al, 2009;Smith et al, 2011;Thoma et al, 2011Thoma et al, , 2015. Duplicate sampling was conducted for all sampling periods to evaluate precision, and quality control (QC) samples consisting of field blanks and field spikes were also prepared for all sampling periods to allow evaluation of tube background contributions and recoveries of target compounds from the Carbopack X sorbent tubes.…”

Section: Methodsmentioning

confidence: 99%

Volatile organic compounds at two oil and natural gas production well pads in Colorado and Texas using passive samplers

Eisele

Mukerjee

Smith

et al. 2016

Journal of the Air & Waste Management Association

Self Cite

View full text Add to dashboard Cite

A pilot study was conducted in application of the U.S. Environmental Protection Agency (EPA) Methods 325A/B variant for monitoring volatile organic compounds (VOCs) near two oil and natural gas (ONG) production well pads in the Texas Barnett Shale formation and Colorado Denver-Julesburg Basin (DJB), along with a traffic-dominated site in downtown Denver, CO. As indicated in the EPA method, VOC concentrations were measured for 14-day sampling periods using passive-diffusive tube samplers with Carbopack X sorbent at fenceline perimeter and other locations. VOCs were significantly higher at the DJB well pad versus the Barnett well pad and were likely due to higher production levels at the DJB well pad during the study. Benzene and toluene were significantly higher at the DJB well pad versus downtown Denver. Except for perchloroethylene, VOCs measured at passive sampler locations (PSs) along the perimeter of the Barnett well pad were significantly higher than PSs farther away. At the DJB well pad, most VOC concentrations, except perchloroethylene, were significantly higher prior to operational changes than after these changes were made. Though limited, the results suggest passive samplers are precise (duplicate precision usually ≤10%) and that they can be useful to assess spatial gradients and operational conditions at well pad locations over time-integrated periods.Implications: Recently enacted EPA Methods 325A/B use passive-diffusive tube samplers to measure benzene at multiple fenceline locations at petrochemical refineries. This pilot study presents initial data demonstrating the utility of Methods 325A/B for monitoring at ONG facilities. Measurements revealed elevated concentrations reflective of production levels and spatial gradients of VOCs relative to source proximity at the Barnett well pad, as well as operational changes at the DJB well pad. Though limited, these findings indicate that Methods 325A/B can be useful in application to characterize VOCs at well pad boundaries.PAPER HISTORY

show abstract

“…Specific procedures have been reported (Williams et al, 2009). These devices have been used extensively in other EPA studies and details of their use and validation were reported earlier (Williams et al, 2003;Mukerjee et al, 2004Mukerjee et al, , 2009.…”

Section: Environmental Monitoringmentioning

confidence: 99%

The influence of human and environmental exposure factors on personal NO2 exposures

Williams

Jones

Croghan

et al. 2011

J Expo Sci Environ Epidemiol

Self Cite

View full text Add to dashboard Cite

The US Environmental Protection Agency's (US EPA) Detroit Exposure and Aerosol Research Study (DEARS) deployed a total of over 2000 nitrogen dioxide, NO 2, passive monitors during 3 years of field data collections. These 24-h based personal, residential outdoor and community-based measurements allowed for the investigation of NO 2 spatial, temporal, human and environmental factors. The relationships between personal exposures to NO 2 and the factors that influence the relationship with community-based measurements were of interest. Survey data from 136 participants were integrated with exposure findings to allow for mixed model effect analyses. Ultimately, 50 individual factors were selected for examination. NO 2 analyses revealed that season, exposure to environmental tobacco smoke and residential gas appliances were strong influencing factors. Only modest associations between community-based measures of nitrogen dioxide and personal exposures impacted by various exposure factors for heating (r ¼ 0.44) or nonheating seasons (r ¼ 0.34) were observed, indicating that use of ambient-based monitoring as a surrogate of personal exposure might result in sizeable exposure misclassification.

show abstract

Field comparison of passive air samplers with reference monitors for ambient volatile organic compounds and nitrogen dioxide under week-long integrals

Cited by 30 publications

References 23 publications

Spatial analysis of volatile organic compounds in South Philadelphia using passive samplers

Spatial analysis of volatile organic compounds in South Philadelphia using passive samplers

Volatile organic compounds at two oil and natural gas production well pads in Colorado and Texas using passive samplers

The influence of human and environmental exposure factors on personal NO2 exposures

Contact Info

Product

Resources

About