Sentences with phrase «aerosol mass»

As expected aerosol mass concentration was dominated by desert dust in coarse mode.

The detailed chemical composition of exhaust particles was determined by using a soot particle aerosol mass spectrometer (SP - AMS).

Mike Alexander, Alex Laskin, Yuri Desyaterik, and John Ortega, who work at DOE's Environmental Molecular Sciences Laboratory (EMSL) at PNNL and Xiao - ying Yu of PNNL's Atmospheric Science and Global Change Division, collected an extensive set of measurements of aerosol mass, size distribution, composition, and particle morphology using an array of in - situ techniques and aerosol sampling approaches.

«The pH really has a significant effect on many of the processes that affect the overall aerosol mass,» Weber added.

Additional aerosol mass composed of organosulfate and organonitrate chemicals can then form via nitrogen oxide - initiated oxidation of VOCs from natural vegetation (e.g., isoprene) in the presence of highly acidic ultrafine particles.

Ambient submicron particle measurements were made with a high - resolution time - of - flight aerosol mass spectrometer (AMS) at the north campus of the University of California Irvine, which is located in the SoCAB approximately 5 miles inland from the Pacific Ocean.

The increase in oxidant levels and preexisting aerosol mass since preindustrial times is the reason of the burden change, since emissions have not changed significantly.

The researchers estimate the mean light - absorbing organic aerosol mass emitted from funeral pyres to be equivalent of approximately 23 percent of the total carbonaceous aerosol mass produced by anthropogenic burning of fossil fuels, and 10 percent of biofuels in the region.

Therefore, considering the large contribution of these particles to the aerosol mass concentration in the atmosphere and the importance of the INPs, we study the ability of these particles as INPs by immersion freezing mode.

The team used an aerosol mass spectrometer and a particle analysis by laser mass spectrometer to chemically characterize the residual material.

A detailed chemical composition of the exhaust particulate matter (PM) was studied using a soot particle aerosol mass spectrometer (SP - AMS), and secondary aerosol formation was studied using a potential aerosol mass (PAM) chamber.