NDLI: Positive sampling artifacts in particulate organic carbon measurements in roadside environment

Content Provider	Springer Nature Link
Author	Cheng, Yan Lee, Shun Cheng Ho, Kin Fai Fung, Kochy
Copyright Year	2009
Abstract	The positive artifacts in particulate organic carbon measurements in a roadside environment were characterized using two filters in tandem. The experiments were performed for PM1.0, PM2.5, and PM10 at 24-h interval using a URG sampler, followed by organic carbon (OC)/ elemental carbon (EC) analysis by the Interagency Monitoring of Protected Visual Environments thermal/optical reflectance carbon analysis protocol. The OC concentrations, derived from the quartz filter behind a front quartz filter, were quite similar for PM1.0, PM2.5, and PM10, ranging from 0.6 to 2.7 μg C m − 3 for PM1.0, from 0.7 to 2.7 μg C m − 3 for PM2.5, and from 1.1 to 2.7 μg C m − 3 for PM10. They were respectively ~2.8%, ~2.4%, and ~1.6% of the particulate mass. The most abundant species on the backup quartz filters were OC2 (250°C) and OC3 (450°C), accounting for ~80% of measured organic carbon on the backup quartz filters. It indicates the filter artifacts are mainly composed of adsorbed semi-volatile organics (below the analysis temperature of 450°C) including gaseous and particulate phase; the loading of artifacts depends on the nature of vapor and its interaction with filter substrate, rather than particle sizes. The uncorrected OC/EC ratios on the front quartz filters were ~10% higher than the corrected OC/EC ratios by positive organic artifacts in winter, and it is ~20% higher in summer. Another finding is that the separation distance of the front and backup filters influence the level of artifacts assessed by the backup filter. Figure Sampling with quartz filters is prone to positive artifacts that can result in potentially higher uncertainties for chemical measurements of particulate organic carbon on quartz fiber filters. In this study, PM1.0 and PM2.5 sampling were conducted concurrently at a roadside using a tandem filter method to characterize the positive OC artifacts and to examine their impact on the particulate OC results. In addition, the influence of the separation distance between the front and backup filters on positive artifacts was also examined.
Starting Page	645
Ending Page	656
Page Count	12
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	168
Issue Number	1-4
e-ISSN	15732959
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-09-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Positive artifacts PM1.0 PM2.5 PM10 Roadside Ecology Atmospheric Protection/Air Quality Control/Air Pollution Environmental Management Ecotoxicology Environmental Monitoring/Analysis
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Assessment of indoor and outdoor particulate air pollution at an urban background site in Iran

Indoor air quality modeling for PM10, PM2.5, and PM1.0 in naturally ventilated classrooms of an urban Indian school building

Characterisation of PM10, PM2.5 and Benzene Soluble Organic Fraction of Particulate Matter in an Urban Area of Kolkata, India

Distribution of PM2.5 and PM10-2.5 in PM10 Fraction in Ambient Air Due to Vehicular Pollution in Kolkata Megacity

Sources of PM10 and PM2.5 in Cairo’s ambient air

Interpretation of Roadside PM10 Monitoring Data from Sunderland, United Kingdom

Atmospheric aerosols at a regional background Himalayan site—Mukteshwar, India

Monitoring of airborne particulate matter at mountainous urban sites

Chemical Composition and Sources of PM10 and PM2.5 Aerosols in Guangzhou, China

Positive sampling artifacts in particulate organic carbon measurements in roadside environment

Similar Documents

Assessment of indoor and outdoor particulate air pollution at an urban background site in Iran

Indoor air quality modeling for PM10, PM2.5, and PM1.0 in naturally ventilated classrooms of an urban Indian school building

Characterisation of PM10, PM2.5 and Benzene Soluble Organic Fraction of Particulate Matter in an Urban Area of Kolkata, India

Distribution of PM2.5 and PM10-2.5 in PM10 Fraction in Ambient Air Due to Vehicular Pollution in Kolkata Megacity

Sources of PM10 and PM2.5 in Cairo’s ambient air

Interpretation of Roadside PM10 Monitoring Data from Sunderland, United Kingdom

Atmospheric aerosols at a regional background Himalayan site—Mukteshwar, India

Monitoring of airborne particulate matter at mountainous urban sites

Chemical Composition and Sources of PM10 and PM2.5 Aerosols in Guangzhou, China

Positive sampling artifacts in particulate organic carbon measurements in roadside environment