Tag Archives: Health

B.C.’s citizen scientists on alert for radiation from Japan

 Amy Smart

Originally Published in the Times Colonist January 24, 2015 10:22 PM

Surfriders collect samples.jpg
Citizen scientists with environmental group Surfriders collect seawater samples off a dock in Port Renfrew. The samples will be analyzed for traces of radiation from the 2011 Fukushima nuclear meltdown. Photo courtesy Craig Wardle

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Looking For Fukushima Contamination in Mushrooms and Soil of Western North America

By Jay T. Cullen

@JayTCullen

Chanterelle Cantharellus cibarius
 

The purpose of this diary is to report results from a recently published, peer reviewed study (behind paywall) examining the degree of Fukushima contamination in fungi and soil of western North America. The diary is the most recent contribution to an ongoing series which aims to provide evidence from scientific studies assessing the impact of the Fukushima Daiichi disaster on the environment and the health of residents of North America. Trappe and colleagues measured the activity of cesium isotopes (134-Cs half life ~ 2 years; 137-Cs half life ~30 years) in wild mushrooms, soil and leaf litter of the west coast from California up to Vancouver Island. The conclusions of the study were as follows:

  1. No activity measurements exceeded levels thought to impact human health
  2. 137-Cs activity increased in fungi and soil towards the north
  3. 134-Cs increased to the south in leaf litter
  4. Chanterelles did not significantly bioconcentrate Cs isotopes
  5. 137-Cs and 134-Cs activities were highly variable from sample to sample
  6. 137-Cs levels largely reflected non-Fukushima sources from either atmospheric weapons tests in the last century or the Chernobyl disaster in 1986

Continue reading Looking For Fukushima Contamination in Mushrooms and Soil of Western North America