云杉针叶中的铷和铯。浓度与生物动力学。

Rubidium and cesium in spruce needles. Concentrations and biodynamics.

作者信息

Tobler L, Bucher J, Furrer V, Schleppi P, Wyttenbach A

机构信息

Paul Scherrer Institute, Villigen PSI, Switzerland.

出版信息

Biol Trace Elem Res. 1994 Fall;43-45:195-205. doi: 10.1007/BF02917316.

DOI:10.1007/BF02917316

PMID:7710828

Abstract

The endogenous concentrations of Rb and Cs have been determined in needles of 56 trees (Norway spruce, Picea abies) from eight different sites. Analysis was done by instrumental neutron activation. Concentrations were found to have a very large range (3-28,000 ng Cs/g and 1-190 micrograms Rb/g). The values on a given site have a tendency toward a log-normal distribution. There is a significant correlation between Rb and Cs, but the correlation is not linear. The concentrations of both elements are a function of the needle age. They decrease smoothly, approaching a constant value, when going from needle age class 1 to 5. It is shown that one algebraic function describes this biodynamic behavior on all sites and at all concentration levels. The function and its parameters are discussed.

摘要

已测定来自八个不同地点的56棵树木（挪威云杉，欧洲云杉）针叶中铷（Rb）和铯（Cs）的内源性浓度。通过仪器中子活化分析法进行分析。发现浓度范围非常大（3 - 28000 ng Cs/g和1 - 190 μg Rb/g）。给定地点的值有呈对数正态分布的趋势。铷和铯之间存在显著相关性，但不是线性相关。两种元素的浓度都是针叶年龄的函数。从针叶年龄类别1到5，它们平稳下降，接近一个恒定值。结果表明，一个代数函数描述了所有地点和所有浓度水平下的这种生物动力学行为。讨论了该函数及其参数。