• Home
  • Search Results
  • Seasonal Fluctuations in Air Pollution in Dazaifu, Japan, and Effect of Long-Range Transport from Mainland East Asia.

Seasonal Fluctuations in Air Pollution in Dazaifu, Japan, and Effect of Long-Range Transport from Mainland East Asia.

Biological & pharmaceutical bulletin (2015-09-04)
Souleymane Coulibaly, Hiroki Minami, Maho Abe, Tomohiro Hasei, Nobuyuki Sera, Shigekazu Yamamoto, Kunihiro Funasaka, Daichi Asakawa, Masanari Watanabe, Naoko Honda, Keiji Wakabayashi, Tetsushi Watanabe
ABSTRACT

To clarify the seasonal fluctuations in air pollution and the effect of long-range transport, we collected airborne particles (n=118) at Dazaifu in Fukuoka, Japan, from June 2012 to May 2013 and measured Pb and SO4(2-), which are indicators of the long-range transport of anthropogenic air pollutants, as well as their mutagenicity, and other factors. The levels of airborne particles, Pb, and SO4(2-) were very high on March 4, 8, 9, and 19, and May 13, 21, and 22, 2013. The backward trajectories indicated that air masses had arrived from the Gobi Desert and northern China on those days. The mutagenicity of airborne particles was examined using the Ames test on Salmonella typhimurium YG1024. Highly mutagenic airborne particles were mostly collected in winter, and most of them showed high activity both with and without S9 mix. High levels of polycyclic aromatic hydrocarbons (PAHs) were found in many samples that showed high mutagenicity. For the samples collected on January 30, February 21, and March 4, the levels of Pb, SO4(2-), PAHs, and mutagenicity were high, and the backward trajectories indicated that air masses present on those days had passed through northern or central China. The Japan Meteorological Agency registered Asian dust events at Fukuoka on March 8, 9, and 19, 2013. The results of the present study suggest that high levels of anthropogenic air pollutants were transported with Asian dust. Similarly, long-range transport of air pollutants including mutagens occurred on days when Asian dust events were not registered.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Hydrochloric acid solution, 1.0 N, BioReagent, suitable for cell culture
Sigma-Aldrich
Hydrochloric acid, 36.5-38.0%, BioReagent, for molecular biology
Sigma-Aldrich
Nitric acid, 70%, purified by redistillation, ≥99.999% trace metals basis
Supelco
Hydrochloric acid solution, volumetric, 0.1 M HCl (0.1N), endotoxin free
Sigma-Aldrich
Perchloric acid, 70%, 99.999% trace metals basis
Sigma-Aldrich
Benzo[a]pyrene, ≥96% (HPLC)
Sigma-Aldrich
Pyrene, 98%
Sigma-Aldrich
Nitric acid, ACS reagent, ≥90.0%
Sigma-Aldrich
Hydrogen chloride, ReagentPlus®, ≥99%
Sigma-Aldrich
Hydrochloric acid solution, 32 wt. % in H2O, FCC
Sigma-Aldrich
Hydrochloric acid solution, ~6 M in H2O, for amino acid analysis
Sigma-Aldrich
Hydrogen chloride solution, 3 M in cyclopentyl methyl ether (CPME)
Supelco
Phenobarbital solution, 1 mg/mL in methanol, ampule of 1 mL, certified reference material, Cerilliant®
Sigma-Aldrich
Pyrene, puriss. p.a., for fluorescence, ≥99.0% (GC)
Sigma-Aldrich
Phenobarbital
Sigma-Aldrich
Fluoranthene, 98%
Sigma-Aldrich
Benz[a]anthracene, 99%
Sigma-Aldrich
Benzo[b]fluoranthene, 98%
Sigma-Aldrich
Benzo[ghi]perylene, 98%
Sigma-Aldrich
Benzo[k]fluoranthene, for fluorescence, ≥99%
Sigma-Aldrich
Pyrene, sublimed grade, 99%
Supelco
Dibenz[a,h]anthracene, vial of 1 g, analytical standard, Cerilliant®
Sigma-Aldrich
Nitric-14N acid solution, ~10 N in H2O, 99.99 atom % 14N