Sentences with phrase «becquerels per cubic meter»

In Canada the federal government has recommended that the Canadian acceptable level for radon should be 800 becquerels per cubic meter of air (800 Bq / m3).

Measured in Becquerels per cubic meter (Bq / m3), radon exists in low levels in most environments, with an average outdoor level of 10 Bq / m3 and indoor level of 45 Bq / m3, a difference explained by the build - up of radon that confined spaces allow.

Typically measured in Picocuries per liter (pCi / L) in the U.S. and Becquerels per cubic meter (Bq / m3) in Canada --(1 pCi / L = 37 Bq / m3)-- radon is quite common at low levels in most environments, with an average outdoor level of 0.27 pCi / L (10 Bq / m3) and indoor level of 1.21 pCi / L (45 Bq / m3).

By June 2013, the concentration reached 0.9 Becquerels per cubic meter, Smith said.

Both peaks are well below the highest level recorded in the Baltic Sea after Chernobyl, which was 1,000 Becquerels per cubic meter.

Cesium - 137 levels at U.S. beaches were 1.3 to 1.7 Becquerels per cubic meter, Buesseler said.

For comparison, uncontaminated seawater contains only a few Becquerels per cubic meter of cesium.

Tests off the coast of Japan shortly after the 2011 earthquake and nuclear plant disaster measured radiation at 50 million becquerel per cubic meter, Buesseler said.

He predicts that water off the Oregon shore will peak at around 10 to 20 becquerel per cubic meter of water as ocean currents carry radiation from Japan in the years ahead.