Characterization of metal-bearing diesel nanoparticles using single-particle mass spectrometry

Lee, D.; Miller, Art; Kittelson, David B.; Zachariah, Michael R.

doi:10.1016/j.jaerosci.2005.04.006

Cited by 70 publications

(62 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results suggest that N 50 -487 is related to the engine parameters (e.g. injection advance angle and injection pressure) [18,19] , and the fuel dose not have evident effects on N 50 -487 . As mentioned above, the difference of number concentrations between the OD fuel and the LSD fuel is mainly because of the difference in sulfur content.…”

Section: Engineering Thermophysicsmentioning

confidence: 86%

Characteristics of ultrafine particle from a compression-ignition engine fueled with low sulfur diesel

et al. 2009

View full text Add to dashboard Cite

Section: Engineering Thermophysicsmentioning

confidence: 86%

Characteristics of ultrafine particle from a compression-ignition engine fueled with low sulfur diesel

et al. 2009

View full text Add to dashboard Cite

“…Differences between the two types of engines were attributed to different residence times in the exhaust system and different soot particle concentrations. Lee et al 49 investigated the processes that lead to the emission of metals (from fuel and lubricating oil) in UFPM. At normal metal concentrations in the fuel, the metals were present in greater concentrations in smaller particles, in agreement with a condensation growth law, which suggests that metals condense on preexisting soot particles.…”

Section: Formation Of Ufpmmentioning

confidence: 99%

Current Understanding of Ultrafine Particulate Matter Emitted from Mobile Sources

Seigneur

2009

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

The physics and chemistry of ultrafine particulate matter (UFPM) associated with mobile source emissions is reviewed. UFPM includes those particles that are less than 0.1 m in diameter. Measurements of UFPM emitted from mobile sources have been conducted in the laboratory, on roadways, and downwind of roadways. In addition, UFPM formation and evolution have been modeled and the modeling results have been compared with available measurements. The results of those measurement programs and modeling studies are synthesized into a coherent description of the formation of UFPM in mobile source emissions and its subsequent evolution in the ambient atmosphere. Recommendations are provided to address the gaps in our current understanding of the processes leading to the formation of UFPM, its chemical composition, and its evolution in the atmosphere.

show abstract

“…The pressure at the lens outlet was hypothesized to be ∼0.13 Pa (10 −3 torr), which is the operating condition of aerosol mass spectrometers (Lee et al 2005(Lee et al , 2006(Lee et al , 2008. In addition, the fluid flow was hypothesized to be a steady state, compressible, axisymmetric, laminar, and viscous flow (Lee et al 2008;Wang et al 2005;Zhang et al 2004).…”

Section: Simulation For Tracing Nano-and Microparticlesmentioning

confidence: 99%

“…First proposed by Liu et al (1995a,b), they have the advantage of being mechanical devices that can be manufactured easily without special electric control units. Submicron particle focusing technology using aerodynamic lenses has diverse applications, including effective aerosol inlets for aerosol mass spectrometers (Schreiner et al 1999;Jayne et al 2000;Zhang et al 2004;Lee et al 2005Lee et al , 2006Lee et al , 2008Liu et al, 2007), micropatterning and material synthesis (Fonzo et al 2000;Dong et al 2004;Qi et al 2010), and inlets for measuring the creation of biomaterials (Harris et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations on Aerodynamic Focusing of Particles in a Wide Size Range of 30 nm–10 μm

Lee

Hwang

Kim

et al. 2013

Aerosol Science and Technology

View full text Add to dashboard Cite

Previous designs of conventional aerodynamic lenses have the limitation of a narrow range of focusable particle size, e.g., just one order of magnitude such as 30-300 nm or 3-30 nm. To enlarge the focusable size range to two orders of magnitude (30-3,000 nm), it is necessary to focus small particles and at the same time not to loose the large ones. From numerical simulations of size-resolved particle trajectories, we confirmed that the traveling losses of such large particles could be avoided only when the radial positions of particles approaching the orifice lenses were near the axes of the lenses. Hence, we designed a lens system consisting of seven orifices to fulfill the requirement. In particular, the orifices were aligned in such a way that their diameters would descend and ascend downstream. As a result, 30-2500 nm particles could be focused to produce particle beams with radii of 0.2 mm or less with a transmission efficiency of above 90% 40 mm downstream of the aerodynamic lens exit. Even 10 µm particles could be focused with a transmission efficiency of 80%.

show abstract

Characterization of metal-bearing diesel nanoparticles using single-particle mass spectrometry

Cited by 70 publications

References 24 publications

Characteristics of ultrafine particle from a compression-ignition engine fueled with low sulfur diesel

Characteristics of ultrafine particle from a compression-ignition engine fueled with low sulfur diesel

Current Understanding of Ultrafine Particulate Matter Emitted from Mobile Sources

Numerical Simulations on Aerodynamic Focusing of Particles in a Wide Size Range of 30 nm–10 μm

Contact Info

Product

Resources

About