蒙大拿州土壤中的铯-137。

Cesium-137 in Montana soils.

作者信息

Arnalds O, Cutshall N H, Nielsen G A

机构信息

Plant and Soil Science Department, Montana State University, Bozeman 59717.

出版信息

Health Phys. 1989 Dec;57(6):955-8. doi: 10.1097/00004032-198912000-00010.

DOI:10.1097/00004032-198912000-00010

PMID:2584030

Abstract

Fallout 137Cs levels in soil were measured at 11 diverse sites throughout Montana. Concentrations in near-surface samples ranged from 20-200 mBq g-1 (0.51-5.41 pCi g-1). Most of the 137Cs was in the top 10 cm of soil. Deeper occurrences were attributed to disturbances by animals and to interstitial flow of small sediment particles within saturated soils. The areal concentrations ranged from 130-748 mBq cm-2 (3.6-20.2 pCi cm-2) and were highly correlated with annual precipitation.

摘要

在蒙大拿州的11个不同地点测量了土壤中的放射性沉降物137铯水平。近地表样本中的浓度范围为20 - 200毫贝克勒尔/克（0.51 - 5.41皮居里/克）。大部分137铯存在于土壤表层10厘米以内。更深层的出现归因于动物造成的扰动以及饱和土壤中小沉积物颗粒的间隙流动。面浓度范围为130 - 748毫贝克勒尔/平方厘米（3.6 - 20.2皮居里/平方厘米），并且与年降水量高度相关。