| 水稻、小麦籽粒砷、镉、铅富集系数分布特征及规律 |
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| 引用本文： | 张红振,骆永明,章海波,宋静,陈永山,夏家淇,赵其国.水稻、小麦籽粒砷、镉、铅富集系数分布特征及规律[J].环境科学,2010,31(2):488-495. |
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| 作者姓名： | 张红振 骆永明 章海波 宋静 陈永山 夏家淇 赵其国 |
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| 作者单位： | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室;中国科学院研究生院;环境保护部南京环境科学研究所; |
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| 基金项目： | 国家自然科学基金重点项目(40432005);;中国科学院知识创新工程重要方向项目(CXTD-Z2005-4);;国家科技支撑计划项目(2007BAC16B06) |
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| 摘 要： | 收集现有文献资料,统计土壤、稻米/小麦籽粒As、Cd、Pb含量的污染数据,将数据分为污染调查数据和添加盐作物栽培试验两类,分别计算其作物富集系数(PUF),并对PUF的分布特征及规律进行分析和总结.结果表明,污染调查数据计算稻米对As、Cd、Pb的PUF中值和全距分别为:0.026(0.004~0.090)、0.150(0.014~1.470)、0.005(0.001~0.031);添加盐试验数据计算稻米对As、Cd、Pb的PUF中值和全距分别为:0.010(0.003~0.033)、0.360(0.056~1.700)、0.002(0.001~0.019).污染调查数据计算小麦籽粒对As、Cd、Pb的PUF中值和全距分别为0.010(0.001~0.110)、0.190(0.030~2.110)、0.017(0.001~0.075);添加盐试验数据计算小麦籽粒对As、Cd、Pb的PUF中值和全距分别为:0.010(0.003~0.028)、0.150(0.055~0.730)、0.001(0.001~0.014).添加盐试验数据与污染调查数据得出的PUF跨幅有明显差异.PUF数值受土壤污染程度、环境条件及作物本身特性等因素的多重影响而不易精准预测,但ln(PUF)符合Gaussian概率分布(R2在0.38~0.94之间).PUF概率模型用于一般风险评估及土壤环境基准制定的保守风险概率计算的条件是,目标污染场地污染程度等参数取值必须在PUF概率模型推导时对应参数取值范围以内,且土壤基本性质及作物生长的环境条件较为一致.
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| 关 键 词： | As Pb Cd 作物富集系数 水稻 小麦 |
| 收稿时间： | 2009/3/31 0:00:00 |
| 修稿时间： | 5/4/2009 12:00:00 AM |
Characterizing the Plant Uptake Factor of As,Cd and Pb for Rice and Wheat Cereal |
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| ZHANG Hong-zhen,LUO Yong-ming,ZHANG Hai-bo,SONG Jing,CHEN Yong-shan,XIA Jia-qi and ZHAO Qi-guo.Characterizing the Plant Uptake Factor of As,Cd and Pb for Rice and Wheat Cereal[J].Chinese Journal of Environmental Science,2010,31(2):488-495. |
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| Authors: | ZHANG Hong-zhen LUO Yong-ming ZHANG Hai-bo SONG Jing CHEN Yong-shan XIA Jia-qi and ZHAO Qi-guo |
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| Institution: | 1.Key Laboratory of Soil Environment and Pollution Remediation;Institute of Soil Science;Chinese Academy of Sciences;Nanjing 210008;China;2.Nanjing Institute of Environmental Science;Ministry of Environment Protection;Nanjing 210042;3.Graduate University of Chinese Academy of Sciences;Beijing 100049;China |
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| Abstract: | The statistical characteristics of plant uptake factor(PUF) of As,Cd and Pb for rice/wheat cereal were analyzed and summarized based on collected data in China.The data were selected and distinguished between field investigation and glasshouse experiment in which metal salts were added to clean soils as grown media.Results showed that the PUF median and range of As,Cd and Pb for rice cereal were 0.026(0.004-0.090),0.150(0.014-1.470),0.005(0.001-0.031) and 0.010(0.003-0.033),0.360(0.056-1.700),0.002(0.001-0.... |
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| Keywords: | As Pb Cd |
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