Takao Miyoshi

TL;DR: In this paper, the mixing state and temporal variation of number concentrations of the particles containing lead (Pb) and vanadium (V) were studied by using a laser ionization singleparticle aerosol mass spectrometer (LISPA-MS).

TL;DR: Aerosol chemical species were measured using an Aerodyne quadrupole aerosol mass spectrometer (Q-AMS) in spring 2010, in Fukuoka as mentioned in this paper, and the main species were sulfate and organics.

TL;DR: In order to understand transported and local pollution in an urban area that are strongly affected by long-range transport of air pollution, daily concentrations of 15 polycyclic aromatic hydrocarbons (PAHs) and 20 n-alkanes in the total suspended particles were simultaneously measured at sites in Western Japan on Fukue Island (FI), located downwind of mainland East Asia, and Fukuoka City (FC), a megacity close (< 200 km) to the FI site, in spring and winter 2010 and summer 2011.

TL;DR: Although the mass concentration and air mass origin were quite different during study period, the mass spectrum and size distribution of organic matter and oxidized organics were similar, which showed uni-modal distribution with modal diameter of around 500 nm.

TL;DR: In this paper, the relative abundance of m/z 44 in fine organic aerosol ( f 44 ) was measured by an Aerodyne aerosol chemical speciation monitor and the stable carbon isotope ratio (δ 13 C) of low-volatile water-soluble organic carbon (LV-WSOC) in the daily filter samples of total suspended particulate matter was also analyzed using an elemental-analyzer coupled with an isotope-ratio mass spectrometer.