熊本県は5日午前、県内の微小粒子状物質(PM2・5)の濃度が、環境省の暫定指針値(1日平均70マイクロ・グラム超)を上回る可能性があるとして、注意喚起した。
環境省は、大気1立方メートルの濃度について、午前4~7時の3時間の平均値が85マイクロ・グラムを超えた場合、統計的に1日平均が70マイクロ・グラム超になるという目安を示している。
熊本県には18の観測地点があり、この3時間のうち1回でも85マイクロ・グラムを超えれば注意を呼びかけるという基準を設定。荒尾市役所で午前5時に91マイクロ・グラム、同7時は101マイクロ・グラムを観測。県は同7時、ホームページなどで不要不急の外出を控えることなどを呼びかけた。
この日は、福岡市でも午前7時に84マイクロ・グラムを観測し、独自の基準に基づいて市民に注意を呼びかけた。大分県日田市では午前9時に95マイクロ・グラム、長崎市では午前2時に84マイクロ・グラムを観測した。
また、山口県は早朝以降でも85マイクロ・グラムを超えれば、注意を促す運用を1日から行っており、4日夕に初めて注意喚起を行った。同日午後4~5時に宇部市で90マイクロ・グラムなど、複数の測定局で85マイクロ・グラムを超えたが、健康被害などの情報は寄せられていないという。
(2013年3月5日22時48分 読売新聞)
(試譯文)
In the Kumamoto Prefecture
in the morning of the 5th, the concentration of the minute
particulate matter (PM2.5) within the prefecture might exceed the interim
guideline value (more than the average of 70 micrograms per day); noting that
the Ministry of Environment called for attention.
It was the first time attention in the
whole country was drawn with reference to the interim guideline.
The Ministry of Environment showed that,
with regard to the concentration of 1 cubic meter of atmospheres, the average
value in the 3 hours from 4.00 to 7:00 in the morning exceeded the average of
85 micrograms, more than the 70 micrograms statistical standard for one day.
For the 18 observation points located in
Kumamoto Prefecture, a standard to appealing for cautions was set up and would be activated if it
exceeded 85 micrograms even for one time within that 3 hours. In the Arao city
office, 91 micrograms was observed at 5.00 am and 101 micrograms was
observed at 7.00 am. The prefecture at its homepage appealed for a refraining from
nonessential going out etc.
On the same day in Fukuoka , 84 micrograms was observed at 7:00
a.m., and it appealed to citizens for cautions based on their own standard. In
Hita city, Oita prefecture, 95 micrograms was
observed at 9:00 am; in Nagasaki
at 2:00 a.m. 84 micrograms was detected.
Moreover, in Yamaguchi prefecture starting
from the 1st, an operation system was in place to call for attention after the early morning when it exceeded 85 micrograms, and in the evening of
the 4th for the first time attention was called for. On the same day
in Ube city at 4.00 pm - 5.00 pm it exceeded 90 micrograms, in two or more
measurement offices it exceeded 85 micrograms. It was said that information
about health impairment etc. was not being received.
So, in Japan the whole country is on guard
for the PM2.5.
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