Distribution coefficients of tin in Japanese agricultural soils and the factors affecting tin sorption behavior

被引：19

作者：

Nakamaru, Y. ^{[1
]}

Uchida, S. ^{[2
]}

机构：

[1] Tokyo Univ Agr, Dept Bioind, Abashiri, Hokkaido 0992493, Japan

[2] Natl Inst Radiol Sci, Off Biospher Assessment Waste Disposal, Inage Ku, Chiba 2638555, Japan

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2008年 / 99卷 / 06期

关键词：

tin; agricultural soil; soil type; distribution coefficient; sorption; pH; selective extraction;

D O I：

10.1016/j.jenvrad.2007.11.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sorption behavior of tin (Sn) in Japanese agricultural soils was studied. Soil-soil solution distribution coefficient (K-d) of Sn (K-d-Sn) for 142 soil samples ranged between 128 and 1590000 L kg(-1) with the geometric mean of 12400 L kg(-1). The K-d-Sn values for Andosol tended to be higher than those of the other soil groups. Among the relationships between Kd-Sn values and soil properties, a high correlation was observed for soil active-Al (Al-(hydr)oxide and Al-humus complex) amount and Kd-Sn. The pH effect on Sn sorption was also investigated. The results suggested that the low pH condition enhanced the Sn sorption in soils. The soil-sorbed Sn fractions in each type of soil material were also evaluated with selective extraction methods. The results showed that most of the soil-sorbed Sn was as organic matter bound or Al/Fe-(hydr)oxide-bound forms. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1003 / 1010

页数：8

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