Field Application of a Newly Developed Personal Nanoparticle Sampler to Selected Metalworking Operations

Young, Li-Hao; Lin, Yun Hua; Lin, Tzu Hsien; Tsai, Perng Jy; Wang, Ying Fang; Hung, Shao Ming; Tsai, Chuen Jinn; Chen, Chun Wan

doi:10.4209/aaqr.2012.10.0270

Cited by 11 publications

(7 citation statements)

References 47 publications

(42 reference statements)

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“…The PENS operates at a low flow rate of 2 L/min and slightly high pressure drop (< 14-15 kPa), which is still acceptable for a personal sampling pump of 21 kPa (AirChek XR5000, USA). The PENS are used for NP mass concertation measurement in workplaces (Young L.H. et al, 2013;Asbach C. et al, 2017) and ambient air as well (Zhu C.S.…”

Section: Personal Exposure Measurementmentioning

confidence: 99%

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Inertial Impaction Technique for the Classification of Particulate Matters and Nanoparticles: A Review

Tsai

2021

KONA

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Inertial impactors are applied widely to classify particulate matters (PMs) and nanoparticles (NPs) with desired aerodynamic diameters for further analyses due to their sharp cutoff characteristics, simple design, easy operation, and high collection ability. A few hundred papers have been published since the 1860s that addressed the characteristics and applications of the inertial impactors. In the last 30 years, our group has also carried out lots of studies to contribute to the design and the improvement of inertial impactors. With our understanding of inertial impactors, this article reviews previous studies of some typical types of the inertial impactors including conventional impactors, cascade impactors, and virtual impactors and the parameters for design consideration of these devices. The article also reviews some applications of the inertial impactors, which are mass concentration measurement, mass and number distribution measurement, personal exposure measurement, particulate matter control, and powder classification. The synthesized knowledge of the inertial impactor in this study can help researchers to design an inertial impactor with an accurate cutoff diameter, a sharp collection efficiency curve, and no particle bounce and particle overloading effects for long-term use for PM classification and control purposes.

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Section: Personal Exposure Measurementmentioning

confidence: 99%

“…et al, 2010;Hsiao T.C. et al, 2011;Sung G. et al, 2018) or for field measurements (Young L.H. et al, 2013;Zhou Y. et al, 2014;Zhu C.S.…”

Section: Introductionmentioning

confidence: 99%

Inertial Impaction Technique for the Classification of Particulate Matters and Nanoparticles: A Review

Tsai

2021

KONA

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“…Hence, very few case studies of breathing zone sampling of workers based on the actual measurement of worker's exposure to NPs have been reported for nano-TiO2 although Ichihara et al (2016) evaluated the personal exposure to nano-TiO2 using a Siutas cascade impactor for particles < 250 nm. The reason for this is that only a few portable tools are available for measuring the degree of exposure to nanoparticles (<100 nm) in the breathing zone of a worker and only a few commercial products capable of measuring nanoparticles are currently available (Furuuchi et al, 2010a;Tsai et al, 2011Tsai et al, , 2012Young et al, 2013;Thongyen et al, 2015;Asbach et al, 2017).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging

Higashikubo

Handika

Kawamoto

et al. 2021

Aerosol Air Qual. Res.

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For the appropriate hygienic management of workplaces where workers handled nano-TiO2 products, the status of the personal exposure of workers to respirable dust (PM4) and nanoparticles (PM0.1) was investigated. Using a cyclone sampler for PM4 and a personal sampler for PM0.1, PM4 and PM0.1 exposure levels were evaluated to discuss them in relation to worker's duties. The number of particles of 0.01-10 µm was also monitored online in order to examine the short-term fluctuation in the concentration and size distribution of particles. The 8h-time-weighted average (TWA) and 95% upper limit for respirable dust exposure were below the occupational exposure limit specified by the Japan Society for Occupational Health and the recommended exposure limits for TWA by NIOSH. The action level was exceeded during the filling of a flexible container bag. More than 70% of particles in the breathing zone was coarse agglomerates of >1 µm, while it may be influenced by powder properties and the handling process as well as the management of local ventilation. The maximum PM0.1 concentration (31.3 µg m-3) occurred in a powder filling booth without air ventilation. The operation of a gasoline powered forklift temporarily increased the concentration of ultrafine particles. Most of TiO2 powder was suspended as micron-order agglomerates in the breathing zone. However, since PM0.1 exposure was much larger than those in outdoor environment particularly under insufficient cares to aerosolized powder and air ventilation, PM0.1 exposure should also be monitored.

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“…The filter from the PENS or the mesh screens from the NRD sampler can be analyzed by various chemical methods (e.g., inductively coupled plasma followed by optical emission spectroscopy, ICP-OES). The PENS sampler has been used for sampling of metalworking operations [85], and the NRD sampler for assessing welding fume exposures [86]. …”

Section: Beyond Pm Massmentioning

confidence: 99%

New Methods for Personal Exposure Monitoring for Airborne Particles

Koehler

Peters

2015

Curr Envir Health Rpt

107

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Airborne particles have been associated with a range of adverse cardiopulmonary outcomes, which has driven its monitoring at stationary, central sites throughout the world. Individual exposures, however, can differ substantially from concentrations measured at central sites due to spatial variability across a region and sources unique to the individual, such as cooking or cleaning in homes, traffic emissions during commutes, and widely varying sources encountered at work. Personal monitoring with small, battery-powered instruments enables the measurement of an individual’s exposure as they go about their daily activities. Personal monitoring can substantially reduce exposure misclassification and improve the power to detect relationships between particulate pollution and adverse health outcomes. By partitioning exposures to known locations and sources, it may be possible to account for variable toxicity of different sources. This review outlines recent advances in the field of personal exposure assessment for particulate pollution. Advances in battery technology have improved the feasibility of 24-hour monitoring, providing the ability to more completely attribute exposures to microenvironment (e.g., work, home, commute). New metrics to evaluate the relationship between particulate matter and health are also being considered, including particle number concentration, particle composition measures, and particle oxidative load. Such metrics provide opportunities to develop more precise associations between airborne particles and health and may provide opportunities for more effective regulations.

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Field Application of a Newly Developed Personal Nanoparticle Sampler to Selected Metalworking Operations

Cited by 11 publications

References 47 publications

Inertial Impaction Technique for the Classification of Particulate Matters and Nanoparticles: A Review

Inertial Impaction Technique for the Classification of Particulate Matters and Nanoparticles: A Review

Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging

New Methods for Personal Exposure Monitoring for Airborne Particles

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