Further round-robin tests to improve the comparability between laboratories of the measurement of carbon in diesel soot and in environmental samples

Guillemin, Michel; Perret, Vincent; Dabill, David W.; Grosjean, R.; Dahmann, D.; Hebisch, R.

doi:10.1007/s004200000194

Cited by 8 publications

(6 citation statements)

References 2 publications

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“…cyclones or elutriators) seems to have no significant influence on the results or is not measurable under these conditions. The analytical procedures used by the different laboratories have been evaluated in former round robins [6]. The results from this inter-comparison support the findings of those carried out previously.…”

Section: Discussionsupporting

confidence: 75%

“…This is based on the experience of the different laboratories represented in the working group [2]. To gain more information on the performance of the methods used and their comparability, several roundrobin tests have been organised on different types of samples [6]. More than 15 laboratories have participated in one or more of these inter-comparison tests.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sampling and analysis of carbon in diesel exhaust particulates – an international comparison

Hebisch

Dabill

Dahmann

et al. 2003

Int Arch Occup Environ Health

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Sampling and analysis of carbon in diesel exhaust particulates – an international comparison

Hebisch

Dabill

Dahmann

et al. 2003

Int Arch Occup Environ Health

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“…More information on the intercomparison of these methods has been reported Hering et al, 1990;Guillemin et al, 1997Guillemin et al, , 2001Birch, 1998). As previously stated, it is not the objective of this review to summarize the differences in the EC measurements but rather to highlight the fact that these measurements are different and that biases and errors can result in source attribution studies if the results from different measurement techniques are integrated or if conclusions based on one set of measurements are extrapolated to a data set that utilizes a different measurement technique.…”

Section: Measurements Of Ecmentioning

confidence: 99%

Evaluation of elemental carbon as a marker for diesel particulate matter

Schauer

2003

J Expo Sci Environ Epidemiol

219

123

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Elemental carbon (EC) in atmospheric particulate matter originates from a broad range of sources in many urban locations. As health and air quality studies are using elemental carbon measurements to better understand the impact of diesel engines and other combustion sources, there is a great need to clearly understand the relative source contributions to EC concentrations in the atmosphere. However, the different analytical techniques currently used to measure EC do not show good agreement for many particulate matter samples. To this end, studies that use EC as a tracer and integrate different analytical techniques for EC can significantly bias estimates of source contributions to atmospheric particulate matter. In addition, source attribution studies that do not properly address all sources of EC in the atmosphere can also lead to inaccuracies and biases. To better understand the use of EC as a tracer, a review of the distribution of EC in the primary particulate matter emissions from air pollution sources using different analytical methods is discussed. A review of previous apportionment studies of particulate matter is presented to elucidate the fraction of EC that results from emissions from diesel engines in urban locations. These results demonstrate that EC is not a unique tracer for diesel exhaust and efforts to utilize EC as an indicator of diesel exhaust must properly address other sources of EC as well as utilize a consistent measurement technique for EC when comparing source and ambient EC measurements to avoid significant biases.

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“…Several researches have conducted comparisons between thermal methods [44][45][46][47][48] . The results for TC are usually coincident in contrast to the variations in the proportions of EC and OC in different methods.…”

Section: Monitoring Of Elemental Carbon (Ec)mentioning

confidence: 99%

“…The results for TC are usually coincident in contrast to the variations in the proportions of EC and OC in different methods. Without optical correction, the differences were mainly caused by the different temperature profiles of protocols used by each procedure 44) . Some OC are charred at high temperatures without oxygen and make EC larger, a positive bias, if optical correction is not applied 45) .…”

Section: Monitoring Of Elemental Carbon (Ec)mentioning

confidence: 99%

Diesel Exhaust Particles in the Work Environment and their Analysis

Ono-Ogasawara

Smith

2004

INDUSTRIAL HEALTH

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Diesel engines are widely used in industries, for example transportation, mining, and construction, because they efficiently produce high power. In diesel exhaust particles (DEP), the number of ultrafine particles, less than around 100 nm, is dominant in contrast to mass size distribution. Carcinogenic PAHs may be adsorbed on DEP at high concentrations. As occupational exposure usually occurs near emission sources, workers are likely to be exposed to high concentration DEP. The exhaust emissions of diesel engines have become lower by modification of the engines and fuels, and introduction of filters and catalysts, thus it has become more difficult to monitor mass and chemical components in DEP. New technology and instruments are being introduced to characterize DEP especially chemically. Recently, quick analytical methods without extraction, and continuous or semi-continuous methods have been introduced. This article will review 1) Elemental Carbon (EC) monitors, 2) analytical methods of individual PAH without solvent extraction, and 3) continuous PAH monitor, because EC and PAH are typical constituents for DEP.

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Further round-robin tests to improve the comparability between laboratories of the measurement of carbon in diesel soot and in environmental samples

Cited by 8 publications

References 2 publications

Sampling and analysis of carbon in diesel exhaust particulates – an international comparison

Sampling and analysis of carbon in diesel exhaust particulates – an international comparison

Evaluation of elemental carbon as a marker for diesel particulate matter

Diesel Exhaust Particles in the Work Environment and their Analysis

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