Field survey of trans-boundary air pollution with high time resolution at coastal sites on the Sea of Japan during winter in Japan.
An intensive field survey, with 6-h measurement intervals, of concentrations of chemical species in particulate matter and gaseous compounds was carried out at coastal sites on the Sea of Japan during winter. The concentration variation of SO(2)(g) and HNO(3)(g) were well correlated, whereas the NH(3)(g) concentration variation had no correlation with those of SO(2)(g) and HNO(3)(g). The NH(4) (+) (p)/non-sea-salt- (nss-)SO(4) (2 -)(p) ratio in particulate matter was mainly affected by the location of the sampling site. One or more concentration peaks of nss-Ca(2 +) for survey period were observed. Backward trajectories analyses for the highest nss-Ca(2 +) concentration peaks showed some inconsistency in pathways. We consider that insufficient mixing of the atmosphere and/or insufficient time for the transported air pollutants to react with those discharged locally are the most likely explanations for the discrepancies between the measured products [HNO(3)][NH(3)] and the calculated values.
Aikawa
Masahide
M
Hyogo Prefectural Institute of Public Health and Environmental Sciences, 3-1-27 Yukihira-cho, Suma-ku, Kobe, Hyogo 654-0037, Japan. Masahide_Aikawa@pref.hyogo.jp
Hiraki
Takatoshi
T
Tamaki
Motonori
M
Kasahara
Mikio
M
Kondo
Akira
A
Uno
Itsushi
I
Mukai
Hitoshi
H
Shimizu
Atsushi
A
Murano
Kentaro
K
D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis*; D004784:Environmental Monitoring; D007564:Japan; D009792:Oceans and Seas; D012621:Seasons; D013997:Time Factors
D000393:Air Pollutants