Japan - Excessive radioactive cesium found in fish sampled off Fukushima

[kristopher]

TOKYO (Kyodo) -- Radioactive cesium above the legal limit for consumption was detected Saturday in young sand lance caught off Fukushima Prefecture, as the prefecture took samples amid a voluntary ban on fishing there in the wake of the ongoing nuclear crisis.

One of the four sample fish had a level of cesium of 570 becquerels per kilogram on Thursday about 1 kilometer off the city of Iwaki, and the other three measured 480 to 500 becquerels. The limit is 500 becquerels under the Food Sanitation Law.

The samples were taken after the species was found contaminated off Ibaraki Prefecture, although fishermen have voluntarily refrained from fishing off Fukushima due to the crisis at the Fukushima Daiichi Nuclear Power Station.

Radioactive iodine measured 1,100 to 1,700 becquerels in the samples against the legal limit of 2,000 becquerels.

The move came as ...

http://mdn.mainichi.jp/mdnnews/news/20110410p2g00m0dm010000c.html

[jpak]

1. Sand lance are an important forage fish for salmon, other predatory fish and whales

up the food web it goes...

[kestrel91316]

2. Remind me again what the half life of that cesium isotope is......

[AtheistCrusader]

3. Which one?

137 has a half-life of about 30.1 years.
134 has a half-life of about 2.1 years.

[Fledermaus]

4. What do Tuna fish eat? How far do they travel?