Applications of low-cost, dual-fraction dust samplers

Kenny, Laura

doi:10.1016/s0003-4878(00)00008-9

Cited by 16 publications

(18 citation statements)

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“…Studies have been undertaken which compare different methods of sampling the respirable fraction. Kenny et al (2001) in a study at different industrial settings (including silica dust) did not find statistically significant differences in the concentration of RD measured by a variety of cyclones and the IOM dual-fraction sampler. In contrast, a study by de Vocht et al (2008) in the brick manufacturing industry found a ratio between the cyclone/IOM of 1.9, and R 2 =0.77 for sampling of silica dust.…”

Section: Discussionmentioning

confidence: 81%

Occupational Exposure to Respirable Dust, Respirable Crystalline Silica and Diesel Engine Exhaust Emissions in the London Tunnelling Environment

Galea

Mair²,

Alexander

et al. 2015

ANNHYG

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Personal 8-h shift exposure to respirable dust, diesel engine exhaust emissions (DEEE) (as respirable elemental carbon), and respirable crystalline silica of workers involved in constructing an underground metro railway tunnel was assessed. Black carbon (BC) concentrations were also assessed using a MicroAeth AE51. During sprayed concrete lining (SCL) activities in the tunnel, the geometric mean (GM) respirable dust exposure level was 0.91mg m(-3), with the highest exposure measured on a back-up sprayer (3.20mg m(-3)). The GM respirable crystalline silica concentration for SCL workers was 0.03mg m(-3), with the highest measurement also for the back-up sprayer (0.24mg m(-3)). During tunnel boring machine (TBM) activities, the GM respirable dust concentration was 0.54mg m(-3). The GM respirable elemental carbon concentration for all the TBM operators was 18 µg m(-3); with the highest concentration measured on a segment lifter. The BC concentrations were higher in the SCL environment in comparison to the TBM environment (daily GM 18-54 µg m(-3) versus 3-6 µg m(-3)). This small-scale monitoring campaign provides additional personal data on exposures experienced by underground tunnel construction workers.

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Section: Discussionmentioning

confidence: 81%

Occupational Exposure to Respirable Dust, Respirable Crystalline Silica and Diesel Engine Exhaust Emissions in the London Tunnelling Environment

Galea

Mair²,

Alexander

et al. 2015

ANNHYG

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“…The size-selective performance of foams has been intensively studied and the concept of using foam has been thoroughly researched [82][83][84][85][86][87]. In a field study in several industries [86] the IOM dual-fraction sampler yielded similar results as personal cyclones with an explained variance (r 2 ) of 0.8 and an association (β) of 0.93, not different from unity. The size-selective performance of the foam used in the DIS has been tested at the Health and Safety Executive in the UK.…”

Section: Reducing Sample Numbers-multi-fraction Samplersmentioning

confidence: 99%

“…A different set of experiments in the same study but in a laboratory room with less control on the temperature and humidity gave an LOD of 0.069 mg and an LOQ of 0.230 mg. A potential issue of using foam as a size-separator is the effect of progressive particle deposition within the foam on its separation characteristics. Penetration tests were carried out using IOM samplers with a respirable foam separator for 10 foams previously used to sample dust (Aloxite F800) in the laboratory at very high concentrations for short periods of time to produce loadings up to 50 mg, 20 foams previously used in sampling from a range of industries, selected to cover different particle types and dust loadings (on the foam) of up to 20 mg, and 3 blank foams [86]. A slight trend for the 50% cut-point to decrease with increasing loading was evident, but the effect was generally small, even with the exceptionally high loadings.…”

Section: Reducing Sample Numbers-multi-fraction Samplersmentioning

confidence: 99%

Recent Advances in Occupational Exposure Assessment of Aerosols

Harper

2020

IJERPH

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Exposure science is underpinned by characterization (measurement) of exposures. In this article, six recent advances in exposure characterization by sampling and analysis are reviewed as tools in the occupational exposure assessment of aerosols. Three advances discussed in detail are (1) recognition and inclusion of sampler wall deposits; (2) development of a new sampling and analytical procedure for respirable crystalline silica that allows non-destructive field analysis at the end of the sampling period; and (3) development of a new sampler to collect the portion of sub-300 nm aerodynamic diameter particles that would deposit in human airways. Three additional developments are described briefly: (4) a size-selective aerosol sampler that allows the collection of multiple physiologically-relevant size fractions; (5) a miniaturized pump and versatile sampling head to meet multiple size-selective sampling criteria; and (6) a novel method of sampling bioaerosols including viruses while maintaining viability. These recent developments are placed in the context of the historical evolution in sampling and analytical developments from 1900 to the present day. While these are not the only advances in exposure characterization, or exposure assessment techniques, they provide an illustration of how technological advances are adding more tools to our toolkit. The review concludes with a number of recommended areas for future research, including expansion of real-time and end-of-shift on-site measurement, development of samplers that operate at higher flow-rates to ensure measurement at lowered limit values, and development of procedures that accurately distinguish aerosol and vapor phases of semi-volatile substances.

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“…The selection of studied samplers for assessment and reference sampler was dictated by the equipment available on the Polish market and the results of the works and recommendations described in [8][9][10][11][12][14][15][16][17][18]. The following heads were used to determine the inhalable fraction: TWO-MET (open head), open head sampler EKOHIGIENA with an internal filter cassette (identical flow rate and construction highly like the TWO-MET probe), GSP 3.5 and GSP 10.…”

Section: Measuring Equipmentmentioning

confidence: 99%

Determining size fractions of an aerosol in view of new definitions in polish regulation

Oberbek¹,

Kaczorowska²

2018

Int. J. SAFE

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A Polish regulation of the Minister of Labour and Social Policy on the value of the maximum concentrations of harmful chemical and dust factors in the workplace introduced new definitions of aerosols, which is "inhalable fraction and respirable fraction in place of the total dust and respirable dust". Due to the modification of the definitions of aerosol fractions, it is necessary to verify methods for determining the inhalable and respirable fraction of the aerosol. The purpose of the studies leading to the determination of the inhalable fraction and the respirable fraction of the aerosol is to obtain validated and reliable exposure information to compare the exposure to the limit value. The most reliable results of occupational exposure assessment are obtained using an individual dosimetry method. The research was carried out at seven selected workstations where there was emitted, for example, wood dust or coal dust. Dust samples were collected in a breathing zone on a specially constructed stand containing a set of sampling heads along with individual aspirators. At each of the investigated workstations, samples of the inhalable fraction and respirable fraction of the dust were collected simultaneously using different sets of sampling heads capable of sampling with varying volume air flow. These studies were conducted to compare the various samplers currently available on the Polish market. IOM was used as a reference personal sampler. By analyzing the results, it was found that the IOM sampler at each workstation obtained similar values (at least four IOM heads were used in one test). The biggest discrepancies can be seen with the GSP 3.5 sampler.

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Applications of low-cost, dual-fraction dust samplers

Cited by 16 publications

References 0 publications

Occupational Exposure to Respirable Dust, Respirable Crystalline Silica and Diesel Engine Exhaust Emissions in the London Tunnelling Environment

Occupational Exposure to Respirable Dust, Respirable Crystalline Silica and Diesel Engine Exhaust Emissions in the London Tunnelling Environment

Recent Advances in Occupational Exposure Assessment of Aerosols

Determining size fractions of an aerosol in view of new definitions in polish regulation

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