INFLUENCE OF PH, SOIL TYPE AND SOIL ORGANIC-MATTER CONTENT ON SOIL-TO-PLANT TRANSFER OF RADIOCESIUM AND RADIOSTRONTIUM AS ANALYZED BY A NONPARAMETRIC METHOD

被引：123

作者：

VANBERGEIJK, KE ^{[1
]}

NOORDIJK, H ^{[1
]}

LEMBRECHTS, J ^{[1
]}

FRISSEL, MJ ^{[1
]}

机构：

[1] NATL INST PUBL HLTH & ENVIRONM PROTECT,POB 1,3720 BA BILTHOVEN,NETHERLANDS

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1992年 / 15卷 / 03期

关键词：

D O I：

10.1016/0265-931X(92)90062-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A new nonparametric method, called the relative comparison method, is presented to evaluate the effect of some soil parameters on transfer of Cs or Sr from soil to edible plant parts. A large number of transfer factors is used for Cs-134, Cs-137, Sr-85, Sr-89 and Sr-90. Analyses showed that soil organic matter content has a large impact on transfer of Cs or Sr. Transfer of Cs increased with increasing organic matter content. Compared to the transfer of Cs in soils with an organic matter content of less than 5%, the effect was approximately a factor of 2-5 to 20% and increased up to a factor of 10 in soils with an organic matter content of more than 50%. In contrast, transfer of Sr decreased with increasing soil organic matter content. Relative to the transfer of Sr in soils with an organic matter content of less than 5% the decrease was by about a factor of 1.5 at 6-10% organic matter up to a factor of 10 in soils with an organic matter content of more than 50%. In the range pH 3.9-8.4, transfer of Cs was not affected by soil pH. On average, transfer of Sr decreased by a factor of 1.7 when soil pH increased from pH 4.5 to 7.4. Transfer of Cs in clay or loam was lower than in sand, by five or three times, respectively. For Sr the transfer in clay or loam was about 1.4 times lower than in sand. These results may be used as correction factors when evaluating soil-to-plant transfer factors of Cs or Sr determined in different soil types, in soils with a different organic matter content or with a different pH.

引用

页码：265 / 276

页数：12

共 20 条

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