Evaluation of soil characteristics potentially affecting arsenic concentration in paddy rice (Oryza sativa L.)

被引：63

作者：

Bogdan, Katja ^{[1
]}

Schenk, Manfred K. ^{[1
]}

机构：

[1] Leibniz Univ Hannover, Inst Plant Nutr, D-30419 Hannover, Germany

来源：

ENVIRONMENTAL POLLUTION | 2009年 / 157卷 / 10期

关键词：

Arsenic; Rice; Poorly crystalline Fe; Silicic acid; Plant available P; SILICON TRANSPORTER; CHEMISTRY; SEEDLINGS; FIELD; IRON;

D O I：

10.1016/j.envpol.2009.05.008

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Paddy rice may contribute considerably to the human intake of As. The knowledge of soil characteristics affecting the As content of the rice plant enables the development of agricultural measures for controlling As uptake. During field surveys in 2004 and 2006, plant samples from 68 fields (Italy, Po-area) revealed markedly differing As concentration in polished rice. The soil factors total As-(aqua regia), pH, grain size fractions, total C, plant available P-(CAL), poorly crystalline Fe-(oxal.) and plant available Si(Na-acetate) content that potentially affect As content of rice were determined. A multiple linear regression analysis showed a significant positive influence of the total AS(aqua regia) and plant available P-(CAL) content and a negative influence of the poorly crystalline Fe-(oxal.) content of the soil on the As content in polished rice and rice straw. Si concentration in rice straw varied widely and was negatively related to As content in straw and polished rice. (C) 2009 Published by Elsevier Ltd.

引用

页码：2617 / 2621

页数：5

共 34 条

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