At the press conference of TEPCO and related ministries of Japanese government,
Ministry of Education, Culture, Sports, Science and Technology stated they will not measure plutonium anymore.
The measurement of plutonium was abandoned in Japan.
It was announced on 10/3/2011 20:00 by staff from Ministry of Education, Culture, Sports, Science and Technology.
Now Japanese people are allowed to take 1~10 Bq/kg of plutonium.
However, 1 in a million gram of plutonium causes cancer.
They announced that plutonium and strontium were detected in 45km / 79km area on 9/30.
They seem afraid of having the contamination situation known by more people.
Measurement of plutonium is almost impossible for normal people with normal equipment because it only emits alpha ray.
Your Geiger counter hardly catches it.
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